Cyanocobalamin
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Basic Info
| Common Name | Cyanocobalamin(F03808) |
| 2D Structure | |
| Description | Cyanocobalamin (commonly known as Vitamin B12) is the most chemically complex of all the vitamins. Cyanocobalamin's structure is based on a corrin ring, which, although similar to the porphyrin ring found in heme, chlorophyll, and cytochrome, has two of the pyrrole rings directly bonded. The central metal ion is Co (cobalt). Cyanocobalamin cannot be made by plants or by animals, as the only type of organisms that have the enzymes required for the synthesis of cyanocobalamin are bacteria and archaea. Higher plants do not concentrate cyanocobalamin from the soil and so are a poor source of the substance as compared with animal tissues. Cyanocobalamin is naturally found in foods including meat (especially liver and shellfish), eggs, and milk products. [HMDB] |
| FRCD ID | F03808 |
| CAS Number | 68-19-9 |
| PubChem CID | 44176380 |
| Formula | C63H89CoN14O14P |
| IUPAC Name | cobalt(2+);[(2R,3S,4R,5S)-5-(5,6-dimethylbenzimidazol-1-yl)-4-hydroxy-2-(hydroxymethyl)oxolan-3-yl] [(2R)-1-[3-[(1R,2R,3R,4Z,7S,9Z,12S,13S,14Z,17S,18S,19R)-2,13,18-tris(2-amino-2-oxoethyl)-7,12,17-tris(3-amino-3-oxopropyl)-3,5,8,8,13,15,18,19-octamethyl-2,7,12,17-tetrahydro-1H-corrin-21-id-3-yl]propanoylamino]propan-2-yl] hydrogen phosphate;cyanide |
| InChI Key | AGVAZMGAQJOSFJ-WZHZPDAFSA-M |
| InChI | InChI=1S/C62H90N13O14P.CN.Co/c1-29-20-39-40(21-30(29)2)75(28-70-39)57-52(84)53(41(27-76)87-57)89-90(85,86)88-31(3)26-69-49(83)18-19-59(8)37(22-46(66)80)56-62(11)61(10,25-48(68)82)36(14-17-45(65)79)51(74-62)33(5)55-60(9,24-47(67)81)34(12-15-43(63)77)38(71-55)23-42-58(6,7)35(13-16-44(64)78)50(72-42)32(4)54(59)73-56;1-2;/h20-21,23,28,31,34-37,41,52-53,56-57,76,84H,12-19,22,24-27H2,1-11H3,(H15,63,64,65,66,67,68,69,71,72,73,74,77,78,79,80,81,82,83,85,86);;/q;-1;+2/p-1/t31-,34-,35-,36-,37+,41-,52-,53-,56-,57+,59-,60+,61+,62+;;/m1../s1 |
| Canonical SMILES | CC1=CC2=C(C=C1C)N(C=N2)C3C(C(C(O3)CO)OP(=O)(O)OC(C)CNC(=O)CCC4(C(C5C6(C(C(C(=N6)C(=C7C(C(C(=N7)C=C8C(C(C(=N8)C(=C4[N-]5)C)CCC(=O)N)(C)C)CCC(=O)N)(C)CC(=O)N)C)CCC(=O)N)(C)CC(=O)N)C)CC(=O)N)C)O.[C-]#N.[Co+2] |
| Isomeric SMILES | CC1=CC2=C(C=C1C)N(C=N2)[C@@H]3[C@@H]([C@@H]([C@H](O3)CO)OP(=O)(O)O[C@H](C)CNC(=O)CC[C@@]\4([C@H]([C@@H]5[C@]6([C@@]([C@@H](C(=N6)/C(=C\7/[C@@]([C@@H](C(=N7)/C=C\8/C([C@@H](C(=N8)/C(=C4\[N-]5)/C)CCC(=O)N)(C)C)CCC(=O)N)(C)CC(=O)N)/C)CCC(=O)N)(C)CC(=O)N)C)CC(=O)N)C)O.[C-]#N.[Co+2] |
| Wikipedia | Cyanocobalamin |
| Synonyms |
Rhodacryst
Cyanocob(III)alamin
Biocobalamine
Cykobeminet
Dodecavite
Duodecibin
Emociclina
Normocytin
Pernipuron
Rubrocitol
|
| Classifies |
Pollutant
|
| Update Date | Nov 13, 2018 17:07 |
Chemical Taxonomy
| Kingdom | Organic compounds |
| Superclass | Organoheterocyclic compounds |
| Class | Tetrapyrroles and derivatives |
| Subclass | Corrinoids |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Cobalamin derivatives |
| Alternative Parents |
|
| Molecular Framework | Not available |
| Substituents | Cobalamin - Metallotetrapyrrole skeleton - 1-ribofuranosylbenzimidazole - Pentose phosphate - N-glycosyl compound - Glycosyl compound - Monosaccharide phosphate - Pentose monosaccharide - Benzimidazole - Phosphoethanolamine - Dialkyl phosphate - Phosphoric acid ester - Fatty amide - Fatty acyl - Monosaccharide - N-substituted imidazole - Organic phosphoric acid derivative - Alkyl phosphate - Benzenoid - Azole - Tetrahydrofuran - Imidazole - Pyrrolidine - Heteroaromatic compound - Pyrroline - Carboxamide group - Ketimine - Secondary carboxylic acid amide - Secondary alcohol - Primary carboxylic acid amide - Propargyl-type 1,3-dipolar organic compound - Carboxylic acid derivative - Oxacycle - Carbene-type 1,3-dipolar compound - Organic 1,3-dipolar compound - Azacycle - Organic transition metal salt - Carbonyl group - Organic cobalt salt - Imine - Organic salt - Organonitrogen compound - Hydrocarbon derivative - Organic oxide - Organopnictogen compound - Organooxygen compound - Alcohol - Organic zwitterion - Organic nitrogen compound - Organic oxygen compound - Primary alcohol - Aromatic heteropolycyclic compound |
| Description | This compound belongs to the class of organic compounds known as cobalamin derivatives. These are organic compounds containing a corrin ring, a cobalt atom, an a nucleotide moiety. Cobalamin Derivatives are actually derived from vitamin B12. |
Properties
| Property Name | Property Value |
|---|---|
| Molecular Weight | 1356.396 |
| Hydrogen Bond Donor Count | 10 |
| Hydrogen Bond Acceptor Count | 21 |
| Rotatable Bond Count | 16 |
| Complexity | 3220 |
| Monoisotopic Mass | 1355.575 |
| Exact Mass | 1355.575 |
| Formal Charge | 0 |
| Heavy Atom Count | 93 |
| Defined Atom Stereocenter Count | 14 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 3 |
| Undefined Bond Stereocenter Count | 0 |
| Isotope Atom Count | 0 |
| Covalently-Bonded Unit Count | 3 |
References
| Title | Journal | Date | Pubmed ID |
|---|---|---|---|
| Chapter 30: historical aspects of the major neurological vitamin deficiency disorders: the water-soluble B vitamins. | Handb Clin Neurol | 2010 | 19892133 |
| Vitamin and mineral status of trained athletes including the effects of supplementation. | Am J Clin Nutr | 1988 Feb | 3341246 |
| Modifying role of dietary factors on the mutagenicity of aflatoxin B1: in vitro effect of vitamins. | Mutat Res | 1987 Jun | 3108659 |
Targets
- General Function:
- Antigen binding
- Specific Function:
- Ig alpha is the major immunoglobulin class in body secretions. It may serve both to defend against local infection and to prevent access of foreign antigens to the general immunologic system.
- Gene Name:
- IGHA1
- Uniprot ID:
- P01876
- Molecular Weight:
- 37654.29 Da
- Mechanism of Action:
- Cobalt interacts with specific IgA antibodies, resulting in immunosensitization.
References
- Bencko V, Wagner V, Wagnerova M, Reichrtova E: Immuno-biochemical findings in groups of individuals occupationally and non-occupationally exposed to emissions containing nickel and cobalt. J Hyg Epidemiol Microbiol Immunol. 1983;27(4):387-94. [6663071 ]
- General Function:
- Antigen binding
- Specific Function:
- Ig alpha is the major immunoglobulin class in body secretions. It may serve both to defend against local infection and to prevent access of foreign antigens to the general immunologic system.
- Gene Name:
- IGHA2
- Uniprot ID:
- P01877
- Molecular Weight:
- 36526.005 Da
- Mechanism of Action:
- Cobalt interacts with specific IgA antibodies, resulting in immunosensitization.
References
- Bencko V, Wagner V, Wagnerova M, Reichrtova E: Immuno-biochemical findings in groups of individuals occupationally and non-occupationally exposed to emissions containing nickel and cobalt. J Hyg Epidemiol Microbiol Immunol. 1983;27(4):387-94. [6663071 ]
- General Function:
- Immunoglobulin receptor binding
- Gene Name:
- IGHE
- Uniprot ID:
- P01854
- Molecular Weight:
- 47018.665 Da
- Mechanism of Action:
- Cobalt interacts with specific IgE antibodies, resulting in immunosensitization.
References
- Shirakawa T, Kusaka Y, Fujimura N, Goto S, Morimoto K: The existence of specific antibodies to cobalt in hard metal asthma. Clin Allergy. 1988 Sep;18(5):451-60. [3233723 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- The beta subunit of voltage-dependent calcium channels contributes to the function of the calcium channel by increasing peak calcium current, shifting the voltage dependencies of activation and inactivation, modulating G protein inhibition and controlling the alpha-1 subunit membrane targeting.
- Gene Name:
- CACNB1
- Uniprot ID:
- Q02641
- Molecular Weight:
- 65712.995 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Metal ion binding
- Specific Function:
- Primary vitamin B12-binding and transport protein. Delivers cobalamin to cells.
- Gene Name:
- TCN2
- Uniprot ID:
- P20062
- Molecular Weight:
- 47534.54 Da
- Mechanism of Action:
- Vitamin B12 is used in the body in two forms: Methylcobalamin and 5-deoxyadenosyl cobalamin. The enzyme methionine synthase needs methylcobalamin as a cofactor. This enzyme is involved in the conversion of the amino acid homocysteine into methionine. Methionine in turn is required for DNA methylation. 5-Deoxyadenosyl cobalamin is a cofactor needed by the enzyme that converts L-methylmalonyl-CoA to succinyl-CoA. This conversion is an important step in the extraction of energy from proteins and fats. Furthermore, succinyl CoA is necessary for the production of hemoglobin, the substances that carries oxygen in red blood cells.
References
- Al-Alami JR, Tanner SM, Tayeh MK, de la Chapelle A, El-Shanti H: Homozygous AMN mutation in hereditary selective intestinal malabsorption of vitamin B12 in Jordan. Saudi Med J. 2005 Jul;26(7):1061-4. [16047053 ]
- General Function:
- Cobalamin binding
- Specific Function:
- May be involved in the binding and intracellular trafficking of cobalamin (vitamin B12).
- Gene Name:
- MMACHC
- Uniprot ID:
- Q9Y4U1
- Molecular Weight:
- 31728.095 Da
- Mechanism of Action:
- Vitamin B12 is used in the body in two forms: Methylcobalamin and 5-deoxyadenosyl cobalamin. The enzyme methionine synthase needs methylcobalamin as a cofactor. This enzyme is involved in the conversion of the amino acid homocysteine into methionine. Methionine in turn is required for DNA methylation. 5-Deoxyadenosyl cobalamin is a cofactor needed by the enzyme that converts L-methylmalonyl-CoA to succinyl-CoA. This conversion is an important step in the extraction of energy from proteins and fats. Furthermore, succinyl CoA is necessary for the production of hemoglobin, the substances that carries oxygen in red blood cells.
References
- Chandler RJ, Aswani V, Tsai MS, Falk M, Wehrli N, Stabler S, Allen R, Sedensky M, Kazazian HH, Venditti CP: Propionyl-CoA and adenosylcobalamin metabolism in Caenorhabditis elegans: evidence for a role of methylmalonyl-CoA epimerase in intermediary metabolism. Mol Genet Metab. 2006 Sep-Oct;89(1-2):64-73. Epub 2006 Jul 14. [16843692 ]
- General Function:
- Hydrolase activity
- Specific Function:
- Probable GTPase. May function as chaperone. May be involved in the transport of cobalamin (Cbl) into mitochondria for the final steps of adenosylcobalamin (AdoCbl) synthesis.
- Gene Name:
- MMAA
- Uniprot ID:
- Q8IVH4
- Molecular Weight:
- 46537.865 Da
- Mechanism of Action:
- Vitamin B12 is used in the body in two forms: Methylcobalamin and 5-deoxyadenosyl cobalamin. The enzyme methionine synthase needs methylcobalamin as a cofactor. This enzyme is involved in the conversion of the amino acid homocysteine into methionine. Methionine in turn is required for DNA methylation. 5-Deoxyadenosyl cobalamin is a cofactor needed by the enzyme that converts L-methylmalonyl-CoA to succinyl-CoA. This conversion is an important step in the extraction of energy from proteins and fats. Furthermore, succinyl CoA is necessary for the production of hemoglobin, the substances that carries oxygen in red blood cells.
References
- Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. [17139284 ]
- General Function:
- Protein homodimerization activity
- Specific Function:
- Involved in DNA excision repair. Initiates repair by binding to damaged sites with various affinities, depending on the photoproduct and the transcriptional state of the region. Required for UV-induced CHEK1 phosphorylation and the recruitment of CEP164 to cyclobutane pyrimidine dimmers (CPD), sites of DNA damage after UV irradiation.
- Gene Name:
- XPA
- Uniprot ID:
- P23025
- Molecular Weight:
- 31367.71 Da
- Mechanism of Action:
- Cobalt inhibits DNA repair by interacting with zinc finger DNA repair proteins.
References
- Hartwig A, Asmuss M, Ehleben I, Herzer U, Kostelac D, Pelzer A, Schwerdtle T, Burkle A: Interference by toxic metal ions with DNA repair processes and cell cycle control: molecular mechanisms. Environ Health Perspect. 2002 Oct;110 Suppl 5:797-9. [12426134 ]
- General Function:
- Zinc ion binding
- Specific Function:
- Reversible hydration of carbon dioxide. Can hydrates cyanamide to urea.
- Gene Name:
- CA1
- Uniprot ID:
- P00915
- Molecular Weight:
- 28870.0 Da
- Mechanism of Action:
- Cobalt inhibits carbonic anhydrases.
References
- Ekinci D, Beydemir S, Kufrevioglu OI: In vitro inhibitory effects of some heavy metals on human erythrocyte carbonic anhydrases. J Enzyme Inhib Med Chem. 2007 Dec;22(6):745-50. doi: 10.1080/14756360601176048 . [18237030 ]
- General Function:
- Zinc ion binding
- Specific Function:
- Essential for bone resorption and osteoclast differentiation (By similarity). Reversible hydration of carbon dioxide. Can hydrate cyanamide to urea. Involved in the regulation of fluid secretion into the anterior chamber of the eye. Contributes to intracellular pH regulation in the duodenal upper villous epithelium during proton-coupled peptide absorption. Stimulates the chloride-bicarbonate exchange activity of SLC26A6.
- Gene Name:
- CA2
- Uniprot ID:
- P00918
- Molecular Weight:
- 29245.895 Da
- Mechanism of Action:
- Cobalt inhibits carbonic anhydrases.
References
- Ekinci D, Beydemir S, Kufrevioglu OI: In vitro inhibitory effects of some heavy metals on human erythrocyte carbonic anhydrases. J Enzyme Inhib Med Chem. 2007 Dec;22(6):745-50. doi: 10.1080/14756360601176048 . [18237030 ]
- General Function:
- Zinc ion binding
- Specific Function:
- Reversible hydration of carbon dioxide. May stimulate the sodium/bicarbonate transporter activity of SLC4A4 that acts in pH homeostasis. It is essential for acid overload removal from the retina and retina epithelium, and acid release in the choriocapillaris in the choroid.
- Gene Name:
- CA4
- Uniprot ID:
- P22748
- Molecular Weight:
- 35032.075 Da
- Mechanism of Action:
- Cobalt inhibits carbonic anhydrases.
References
- Ekinci D, Beydemir S, Kufrevioglu OI: In vitro inhibitory effects of some heavy metals on human erythrocyte carbonic anhydrases. J Enzyme Inhib Med Chem. 2007 Dec;22(6):745-50. doi: 10.1080/14756360601176048 . [18237030 ]
- General Function:
- Cob(i)yrinic acid a,c-diamide adenosyltransferase activity
- Gene Name:
- MMAB
- Uniprot ID:
- Q96EY8
- Molecular Weight:
- 27387.975 Da
- Mechanism of Action:
- Vitamin B12 is used in the body in two forms: Methylcobalamin and 5-deoxyadenosyl cobalamin. The enzyme methionine synthase needs methylcobalamin as a cofactor. This enzyme is involved in the conversion of the amino acid homocysteine into methionine. Methionine in turn is required for DNA methylation. 5-Deoxyadenosyl cobalamin is a cofactor needed by the enzyme that converts L-methylmalonyl-CoA to succinyl-CoA. This conversion is an important step in the extraction of energy from proteins and fats. Furthermore, succinyl CoA is necessary for the production of hemoglobin, the substances that carries oxygen in red blood cells.
References
- Zhang J, Dobson CM, Wu X, Lerner-Ellis J, Rosenblatt DS, Gravel RA: Impact of cblB mutations on the function of ATP:cob(I)alamin adenosyltransferase in disorders of vitamin B12 metabolism. Mol Genet Metab. 2006 Apr;87(4):315-22. Epub 2006 Jan 24. [16439175 ]
- General Function:
- Protein complex binding
- Specific Function:
- Catalyzes the conversion of 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate, a co-substrate for homocysteine remethylation to methionine.
- Gene Name:
- MTHFR
- Uniprot ID:
- P42898
- Molecular Weight:
- 74595.895 Da
References
- Nakamura T, Saionji K, Hiejima Y, Hirayama H, Tago K, Takano H, Tajiri M, Hayashi K, Kawabata M, Funamizu M, Makita Y, Hata A: Methylenetetrahydrofolate reductase genotype, vitamin B12, and folate influence plasma homocysteine in hemodialysis patients. Am J Kidney Dis. 2002 May;39(5):1032-9. [11979347 ]
- General Function:
- Cobalamin binding
- Specific Function:
- Binds vitamin B12 with femtomolar affinity and protects it from the acidic environment of the stomach.
- Gene Name:
- TCN1
- Uniprot ID:
- P20061
- Molecular Weight:
- 48206.32 Da
- Mechanism of Action:
- Vitamin B12 is used in the body in two forms: Methylcobalamin and 5-deoxyadenosyl cobalamin. The enzyme methionine synthase needs methylcobalamin as a cofactor. This enzyme is involved in the conversion of the amino acid homocysteine into methionine. Methionine in turn is required for DNA methylation. 5-Deoxyadenosyl cobalamin is a cofactor needed by the enzyme that converts L-methylmalonyl-CoA to succinyl-CoA. This conversion is an important step in the extraction of energy from proteins and fats. Furthermore, succinyl CoA is necessary for the production of hemoglobin, the substances that carries oxygen in red blood cells.
References
- Carmel R: Haptocorrin (transcobalamin I) and cobalamin deficiencies. Clin Chem. 2007 Feb;53(2):367-8; author reply 368-9. [17259255 ]
- General Function:
- Pyridoxal phosphate binding
- Gene Name:
- ALAS2
- Uniprot ID:
- P22557
- Molecular Weight:
- 64632.86 Da
- Mechanism of Action:
- Cobalt inhibits heme synthesis by preventing synthesis of 5-aminolaevulinate via inhibition of 5-aminolaevulinate synthase.
References
- Wikipedia. Mercury poisoning. Last Updated 8 March 2009. : http://en.wikipedia.org/wiki/Mercury_poisoning
- General Function:
- Receptor binding
- Specific Function:
- Necessary for efficient absorption of vitamin B12. May direct the production of trunk mesoderm during development by modulating a bone morphogenetic protein (BMP) signaling pathway in the underlying visceral endoderm (By similarity).
- Gene Name:
- AMN
- Uniprot ID:
- Q9BXJ7
- Molecular Weight:
- 47753.91 Da
- Mechanism of Action:
- Vitamin B12 is used in the body in two forms: Methylcobalamin and 5-deoxyadenosyl cobalamin. The enzyme methionine synthase needs methylcobalamin as a cofactor. This enzyme is involved in the conversion of the amino acid homocysteine into methionine. Methionine in turn is required for DNA methylation. 5-Deoxyadenosyl cobalamin is a cofactor needed by the enzyme that converts L-methylmalonyl-CoA to succinyl-CoA. This conversion is an important step in the extraction of energy from proteins and fats. Furthermore, succinyl CoA is necessary for the production of hemoglobin, the substances that carries oxygen in red blood cells.
References
- Al-Alami JR, Tanner SM, Tayeh MK, de la Chapelle A, El-Shanti H: Homozygous AMN mutation in hereditary selective intestinal malabsorption of vitamin B12 in Jordan. Saudi Med J. 2005 Jul;26(7):1061-4. [16047053 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1C gives rise to L-type calcium currents. Long-lasting (L-type) calcium channels belong to the 'high-voltage activated' (HVA) group. They are blocked by dihydropyridines (DHP), phenylalkylamines, benzothiazepines, and by omega-agatoxin-IIIA (omega-Aga-IIIA). They are however insensitive to omega-conotoxin-GVIA (omega-CTx-GVIA) and omega-agatoxin-IVA (omega-Aga-IVA). Calcium channels containing the alpha-1C subunit play an important role in excitation-contraction coupling in the heart. The various isoforms display marked differences in the sensitivity to DHP compounds. Binding of calmodulin or CABP1 at the same regulatory sites results in an opposit effects on the channel function.
- Gene Name:
- CACNA1C
- Uniprot ID:
- Q13936
- Molecular Weight:
- 248974.1 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity involved sa node cell action potential
- Specific Function:
- Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1D gives rise to L-type calcium currents. Long-lasting (L-type) calcium channels belong to the 'high-voltage activated' (HVA) group. They are blocked by dihydropyridines (DHP), phenylalkylamines, benzothiazepines, and by omega-agatoxin-IIIA (omega-Aga-IIIA). They are however insensitive to omega-conotoxin-GVIA (omega-CTx-GVIA) and omega-agatoxin-IVA (omega-Aga-IVA).
- Gene Name:
- CACNA1D
- Uniprot ID:
- Q01668
- Molecular Weight:
- 245138.75 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1F gives rise to L-type calcium currents. Long-lasting (L-type) calcium channels belong to the 'high-voltage activated' (HVA) group. They are blocked by dihydropyridines (DHP), phenylalkylamines, benzothiazepines, and by omega-agatoxin-IIIA (omega-Aga-IIIA). They are however insensitive to omega-conotoxin-GVIA (omega-CTx-GVIA) and omega-agatoxin-IVA (omega-Aga-IVA).
- Gene Name:
- CACNA1F
- Uniprot ID:
- O60840
- Molecular Weight:
- 220675.9 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1S gives rise to L-type calcium currents. Long-lasting (L-type) calcium channels belong to the 'high-voltage activated' (HVA) group. They are blocked by dihydropyridines (DHP), phenylalkylamines, benzothiazepines, and by omega-agatoxin-IIIA (omega-Aga-IIIA). They are however insensitive to omega-conotoxin-GVIA (omega-CTx-GVIA) and omega-agatoxin-IVA (omega-Aga-IVA). Calcium channels containing the alpha-1S subunit play an important role in excitation-contraction coupling in skeletal muscle.
- Gene Name:
- CACNA1S
- Uniprot ID:
- Q13698
- Molecular Weight:
- 212348.1 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- The beta subunit of voltage-dependent calcium channels contributes to the function of the calcium channel by increasing peak calcium current, shifting the voltage dependencies of activation and inactivation, modulating G protein inhibition and controlling the alpha-1 subunit membrane targeting.
- Gene Name:
- CACNB3
- Uniprot ID:
- P54284
- Molecular Weight:
- 54531.425 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- The beta subunit of voltage-dependent calcium channels contributes to the function of the calcium channel by increasing peak calcium current, shifting the voltage dependencies of activation and inactivation, modulating G protein inhibition and controlling the alpha-1 subunit membrane targeting.
- Gene Name:
- CACNB4
- Uniprot ID:
- O00305
- Molecular Weight:
- 58168.625 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1A gives rise to P and/or Q-type calcium currents. P/Q-type calcium channels belong to the 'high-voltage activated' (HVA) group and are blocked by the funnel toxin (Ftx) and by the omega-agatoxin-IVA (omega-Aga-IVA). They are however insensitive to dihydropyridines (DHP), and omega-conotoxin-GVIA (omega-CTx-GVIA).
- Gene Name:
- CACNA1A
- Uniprot ID:
- O00555
- Molecular Weight:
- 282362.39 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- This protein is a subunit of the dihydropyridine (DHP) sensitive calcium channel. Plays a role in excitation-contraction coupling. The skeletal muscle DHP-sensitive Ca(2+) channel may function only as a multiple subunit complex.
- Gene Name:
- CACNG1
- Uniprot ID:
- Q06432
- Molecular Weight:
- 25028.105 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- Regulates the trafficking and gating properties of AMPA-selective glutamate receptors (AMPARs). Promotes their targeting to the cell membrane and synapses and modulates their gating properties by slowing their rates of activation, deactivation and desensitization. Does not show subunit-specific AMPA receptor regulation and regulates all AMPAR subunits. Thought to stabilize the calcium channel in an inactivated (closed) state.
- Gene Name:
- CACNG2
- Uniprot ID:
- Q9Y698
- Molecular Weight:
- 35965.44 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- Regulates the trafficking and gating properties of AMPA-selective glutamate receptors (AMPARs). Promotes their targeting to the cell membrane and synapses and modulates their gating properties by slowing their rates of activation, deactivation and desensitization and by mediating their resensitization. Does not show subunit-specific AMPA receptor regulation and regulates all AMPAR subunits. Thought to stabilize the calcium channel in an inactivated (closed) state.
- Gene Name:
- CACNG4
- Uniprot ID:
- Q9UBN1
- Molecular Weight:
- 36578.39 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- Regulates the gating properties of AMPA-selective glutamate receptors (AMPARs). Modulates their gating properties by accelerating their rates of activation, deactivation and desensitization. Displays subunit-specific AMPA receptor regulation. Shows specificity for GRIA1, GRIA4 and the long isoform of GRIA2. Thought to stabilize the calcium channel in an inactivated (closed) state (By similarity).
- Gene Name:
- CACNG5
- Uniprot ID:
- Q9UF02
- Molecular Weight:
- 30902.44 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- Thought to stabilize the calcium channel in an inactivated (closed) state.
- Gene Name:
- CACNG6
- Uniprot ID:
- Q9BXT2
- Molecular Weight:
- 28128.745 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- Regulates the trafficking and gating properties of AMPA-selective glutamate receptors (AMPARs). Promotes their targeting to the cell membrane and synapses and modulates their gating properties by slowing their rates of activation, deactivation and desensitization and by mediating their resensitization. Displays subunit-specific AMPA receptor regulation. Shows specificity only for GRIA1 and GRIA2. Thought to stabilize the calcium channel in an inactivated (closed) state.
- Gene Name:
- CACNG7
- Uniprot ID:
- P62955
- Molecular Weight:
- 31002.29 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- The alpha-2/delta subunit of voltage-dependent calcium channels regulates calcium current density and activation/inactivation kinetics of the calcium channel.
- Gene Name:
- CACNA2D4
- Uniprot ID:
- Q7Z3S7
- Molecular Weight:
- 127936.93 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- Regulates the trafficking and gating properties of AMPA-selective glutamate receptors (AMPARs). Promotes their targeting to the cell membrane and synapses and modulates their gating properties by slowing their rates of activation, deactivation and desensitization and by mediating their resensitization. Does not show subunit-specific AMPA receptor regulation and regulates all AMPAR subunits. Thought to stabilize the calcium channel in an inactivated (closed) state.
- Gene Name:
- CACNG8
- Uniprot ID:
- Q8WXS5
- Molecular Weight:
- 43312.44 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated ion channel activity
- Specific Function:
- Thought to stabilize the calcium channel in an inactivated (closed) state. Modulates calcium current when coexpressed with CACNA1G (By similarity).
- Gene Name:
- TMEM37
- Uniprot ID:
- Q8WXS4
- Molecular Weight:
- 20931.565 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- The alpha-2/delta subunit of voltage-dependent calcium channels regulates calcium current density and activation/inactivation kinetics of the calcium channel. Plays an important role in excitation-contraction coupling (By similarity).
- Gene Name:
- CACNA2D1
- Uniprot ID:
- P54289
- Molecular Weight:
- 124566.93 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- The alpha-2/delta subunit of voltage-dependent calcium channels regulates calcium current density and activation/inactivation kinetics of the calcium channel. Acts as a regulatory subunit for P/Q-type calcium channel (CACNA1A), N-type (CACNA1B), L-type (CACNA1C OR CACNA1D) and possibly T-type (CACNA1G). Overexpression induces apoptosis.
- Gene Name:
- CACNA2D2
- Uniprot ID:
- Q9NY47
- Molecular Weight:
- 129816.095 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Pyridoxal phosphate binding
- Gene Name:
- ALAS1
- Uniprot ID:
- P13196
- Molecular Weight:
- 70580.325 Da
- Mechanism of Action:
- Cobalt inhibits heme synthesis by preventing synthesis of 5-aminolaevulinate via inhibition of 5-aminolaevulinate synthase.
References
- Wikipedia. Mercury poisoning. Last Updated 8 March 2009. : http://en.wikipedia.org/wiki/Mercury_poisoning
- General Function:
- Oxidoreductase activity, oxidizing metal ions, nad or nadp as acceptor
- Specific Function:
- Involved in the reductive regeneration of cob(I)alamin (vitamin B12) cofactor required for the maintenance of methionine synthase in a functional state. Necessary for utilization of methylgroups from the folate cycle, thereby affecting transgenerational epigenetic inheritance. Folate pathway donates methyl groups necessary for cellular methylation and affects different pathways such as DNA methylation, possibly explaining the transgenerational epigenetic inheritance effects.
- Gene Name:
- MTRR
- Uniprot ID:
- Q9UBK8
- Molecular Weight:
- 80409.22 Da
- Mechanism of Action:
- Vitamin B12 is used in the body in two forms: Methylcobalamin and 5-deoxyadenosyl cobalamin. The enzyme methionine synthase needs methylcobalamin as a cofactor. This enzyme is involved in the conversion of the amino acid homocysteine into methionine. Methionine in turn is required for DNA methylation. 5-Deoxyadenosyl cobalamin is a cofactor needed by the enzyme that converts L-methylmalonyl-CoA to succinyl-CoA. This conversion is an important step in the extraction of energy from proteins and fats. Furthermore, succinyl CoA is necessary for the production of hemoglobin, the substances that carries oxygen in red blood cells.
References
- O'Leary VB, Mills JL, Pangilinan F, Kirke PN, Cox C, Conley M, Weiler A, Peng K, Shane B, Scott JM, Parle-McDermott A, Molloy AM, Brody LC: Analysis of methionine synthase reductase polymorphisms for neural tube defects risk association. Mol Genet Metab. 2005 Jul;85(3):220-7. Epub 2005 Mar 17. [15979034 ]
- General Function:
- Modified amino acid binding
- Specific Function:
- Involved in the degradation of several amino acids, odd-chain fatty acids and cholesterol via propionyl-CoA to the tricarboxylic acid cycle. MCM has different functions in other species.
- Gene Name:
- MUT
- Uniprot ID:
- P22033
- Molecular Weight:
- 83133.755 Da
- Mechanism of Action:
- Vitamin B12 is used in the body in two forms: Methylcobalamin and 5-deoxyadenosyl cobalamin. The enzyme methionine synthase needs methylcobalamin as a cofactor. This enzyme is involved in the conversion of the amino acid homocysteine into methionine. Methionine in turn is required for DNA methylation. 5-Deoxyadenosyl cobalamin is a cofactor needed by the enzyme that converts L-methylmalonyl-CoA to succinyl-CoA. This conversion is an important step in the extraction of energy from proteins and fats. Furthermore, succinyl CoA is necessary for the production of hemoglobin, the substances that carries oxygen in red blood cells.
References
- Worgan LC, Niles K, Tirone JC, Hofmann A, Verner A, Sammak A, Kucic T, Lepage P, Rosenblatt DS: Spectrum of mutations in mut methylmalonic acidemia and identification of a common Hispanic mutation and haplotype. Hum Mutat. 2006 Jan;27(1):31-43. [16281286 ]
- General Function:
- Transporter activity
- Specific Function:
- Cotransporter which plays a role in lipoprotein, vitamin and iron metabolism, by facilitating their uptake. Binds to ALB, MB, Kappa and lambda-light chains, TF, hemoglobin, GC, SCGB1A1, APOA1, high density lipoprotein, and the GIF-cobalamin complex. The binding of all ligands requires calcium. Serves as important transporter in several absorptive epithelia, including intestine, renal proximal tubules and embryonic yolk sac. Interaction with LRP2 mediates its trafficking throughout vesicles and facilitates the uptake of specific ligands like GC, hemoglobin, ALB, TF and SCGB1A1. Interaction with AMN controls its trafficking to the plasma membrane and facilitates endocytosis of ligands. May play an important role in the development of the peri-implantation embryo through internalization of APOA1 and cholesterol. Binds to LGALS3 at the maternal-fetal interface.
- Gene Name:
- CUBN
- Uniprot ID:
- O60494
- Molecular Weight:
- 398732.93 Da
- Mechanism of Action:
- Vitamin B12 is used in the body in two forms: Methylcobalamin and 5-deoxyadenosyl cobalamin. The enzyme methionine synthase needs methylcobalamin as a cofactor. This enzyme is involved in the conversion of the amino acid homocysteine into methionine. Methionine in turn is required for DNA methylation. 5-Deoxyadenosyl cobalamin is a cofactor needed by the enzyme that converts L-methylmalonyl-CoA to succinyl-CoA. This conversion is an important step in the extraction of energy from proteins and fats. Furthermore, succinyl CoA is necessary for the production of hemoglobin, the substances that carries oxygen in red blood cells.
References
- Fedosov SN, Fedosova NU, Berglund L, Moestrup SK, Nexo E, Petersen TE: Composite organization of the cobalamin binding and cubilin recognition sites of intrinsic factor. Biochemistry. 2005 Mar 8;44(9):3604-14. [15736970 ]
- General Function:
- Zinc ion binding
- Specific Function:
- Involved in the base excision repair (BER) pathway, by catalyzing the poly(ADP-ribosyl)ation of a limited number of acceptor proteins involved in chromatin architecture and in DNA metabolism. This modification follows DNA damages and appears as an obligatory step in a detection/signaling pathway leading to the reparation of DNA strand breaks. Mediates the poly(ADP-ribosyl)ation of APLF and CHFR. Positively regulates the transcription of MTUS1 and negatively regulates the transcription of MTUS2/TIP150. With EEF1A1 and TXK, forms a complex that acts as a T-helper 1 (Th1) cell-specific transcription factor and binds the promoter of IFN-gamma to directly regulate its transcription, and is thus involved importantly in Th1 cytokine production. Required for PARP9 and DTX3L recruitment to DNA damage sites. PARP1-dependent PARP9-DTX3L-mediated ubiquitination promotes the rapid and specific recruitment of 53BP1/TP53BP1, UIMC1/RAP80, and BRCA1 to DNA damage sites.
- Gene Name:
- PARP1
- Uniprot ID:
- P09874
- Molecular Weight:
- 113082.945 Da
- Mechanism of Action:
- Cobalt inhibits DNA repair by interacting with zinc finger DNA repair proteins.
References
- Hartwig A, Asmuss M, Ehleben I, Herzer U, Kostelac D, Pelzer A, Schwerdtle T, Burkle A: Interference by toxic metal ions with DNA repair processes and cell cycle control: molecular mechanisms. Environ Health Perspect. 2002 Oct;110 Suppl 5:797-9. [12426134 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- The beta subunit of voltage-dependent calcium channels contributes to the function of the calcium channel by increasing peak calcium current, shifting the voltage dependencies of activation and inactivation, modulating G protein inhibition and controlling the alpha-1 subunit membrane targeting.
- Gene Name:
- CACNB2
- Uniprot ID:
- Q08289
- Molecular Weight:
- 73579.925 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1B gives rise to N-type calcium currents. N-type calcium channels belong to the 'high-voltage activated' (HVA) group and are blocked by omega-conotoxin-GVIA (omega-CTx-GVIA) and by omega-agatoxin-IIIA (omega-Aga-IIIA). They are however insensitive to dihydropyridines (DHP), and omega-agatoxin-IVA (omega-Aga-IVA). Calcium channels containing alpha-1B subunit may play a role in directed migration of immature neurons.
- Gene Name:
- CACNA1B
- Uniprot ID:
- Q00975
- Molecular Weight:
- 262493.84 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1E gives rise to R-type calcium currents. R-type calcium channels belong to the 'high-voltage activated' (HVA) group and are blocked by nickel, and partially by omega-agatoxin-IIIA (omega-Aga-IIIA). They are however insensitive to dihydropyridines (DHP), omega-conotoxin-GVIA (omega-CTx-GVIA), and omega-agatoxin-IVA (omega-Aga-IVA). Calcium channels containing alpha-1E subunit could be involved in the modulation of firing patterns of neurons which is important for information processing.
- Gene Name:
- CACNA1E
- Uniprot ID:
- Q15878
- Molecular Weight:
- 261729.05 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated calcium channel activity
- Specific Function:
- Regulates the trafficking and gating properties of AMPA-selective glutamate receptors (AMPARs). Promotes their targeting to the cell membrane and synapses and modulates their gating properties by slowing their rates of activation, deactivation and desensitization. Does not show subunit-specific AMPA receptor regulation and regulates all AMPAR subunits. Thought to stabilize the calcium channel in an inactivated (closed) state (By similarity).
- Gene Name:
- CACNG3
- Uniprot ID:
- O60359
- Molecular Weight:
- 35548.14 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Voltage-gated ion channel activity
- Specific Function:
- The alpha-2/delta subunit of voltage-dependent calcium channels regulates calcium current density and activation/inactivation kinetics of the calcium channel. Acts as a regulatory subunit for P/Q-type calcium channel (CACNA1A), N-type (CACNA1B), L-type (CACNA1C OR CACNA1D) but not T-type (CACNA1G) (By similarity).
- Gene Name:
- CACNA2D3
- Uniprot ID:
- Q8IZS8
- Molecular Weight:
- 123010.22 Da
- Mechanism of Action:
- Cobalt blocks high-voltage-activated calcium channels, possibly impairing neurotransmission.
References
- Castelli L, Tanzi F, Taglietti V, Magistretti J: Cu2+, Co2+, and Mn2+ modify the gating kinetics of high-voltage-activated Ca2+ channels in rat palaeocortical neurons. J Membr Biol. 2003 Oct 1;195(3):121-36. [14724759 ]
- General Function:
- Zinc ion binding
- Specific Function:
- Catalyzes the transfer of a methyl group from methyl-cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine. Subsequently, remethylates the cofactor using methyltetrahydrofolate (By similarity).
- Gene Name:
- MTR
- Uniprot ID:
- Q99707
- Molecular Weight:
- 140525.91 Da
- Mechanism of Action:
- Vitamin B12 is used in the body in two forms: Methylcobalamin and 5-deoxyadenosyl cobalamin. The enzyme methionine synthase needs methylcobalamin as a cofactor. This enzyme is involved in the conversion of the amino acid homocysteine into methionine. Methionine in turn is required for DNA methylation. 5-Deoxyadenosyl cobalamin is a cofactor needed by the enzyme that converts L-methylmalonyl-CoA to succinyl-CoA. This conversion is an important step in the extraction of energy from proteins and fats. Furthermore, succinyl CoA is necessary for the production of hemoglobin, the substances that carries oxygen in red blood cells.