Basic Info

Common NamePyridoxine(F04737)
2D Structure
Description

Pyridoxine is the 4-methanol form of vitamin B6 and is converted to pyridoxal 5-phosphate in the body. Pyridoxal 5-phosphate is a coenzyme for synthesis of amino acids, neurotransmitters (serotonin, norepinephrine), sphingolipids, aminolevulinic acid. Although pyridoxine and vitamin B6 are still frequently used as synonyms, especially by medical researchers, this practice is erroneous and sometimes misleading. Pyridoxine is one of the compounds that can be called vitamin B6. Pyridoxine assists in the balancing of sodium and potassium as well as promoting red blood cell production. It is linked to cancer immunity and helps fight the formation of homocysteine. It has been suggested that Pyridoxine might help children with learning difficulties, and may also prevent dandruff, eczema, and psoriasis. In addition, pyridoxine can help balance hormonal changes in women and aid in immune system. Lack of pyridoxine may cause anemia, nerve damage, seizures, skin problems, and sores in the mouth. Deficiency, though rare because of widespread distribution in foods, leads to the development of peripheral neuritis in adults and affects the central nervous system in children.

FRCD IDF04737
CAS Number65-23-6
PubChem CID1054
FormulaC8H11NO3
IUPAC Name

4,5-bis(hydroxymethyl)-2-methylpyridin-3-ol

InChI Key

LXNHXLLTXMVWPM-UHFFFAOYSA-N

InChI

InChI=1S/C8H11NO3/c1-5-8(12)7(4-11)6(3-10)2-9-5/h2,10-12H,3-4H2,1H3

Canonical SMILES

CC1=NC=C(C(=C1O)CO)CO

Isomeric SMILES

CC1=NC=C(C(=C1O)CO)CO

WikipediaPyridoxine
Synonyms
        
            Gravidox
        
            3-hydroxy-4,5-bis(hydroxymethyl)-2-methylpyridine
        
            pyridoxine
        
            65-23-6
        
            Pyridoxol
        
            vitamin B6
        
            Pyridoxin
        
            Hydoxin
        
            Adermine
        
            Pyridoxolum
        
Classifies
                

                  
                    Predicted: Pollutant
                  

                
        
Update DateNov 13, 2018 17:07

Chemical Taxonomy

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassPyridines and derivatives
SubclassPyridoxines
Intermediate Tree NodesNot available
Direct ParentPyridoxines
Alternative Parents
Molecular FrameworkAromatic heteromonocyclic compounds
SubstituentsPyridoxine - Methylpyridine - Hydroxypyridine - Heteroaromatic compound - Azacycle - Organic nitrogen compound - Organic oxygen compound - Organopnictogen compound - Hydrocarbon derivative - Aromatic alcohol - Primary alcohol - Organooxygen compound - Organonitrogen compound - Alcohol - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as pyridoxines. These are pyridoxal derivatives in which the carbaldehyde group at position 2 of the pyridoxal moiety is replaced by a hydroxymethyl group.

Properties

Property NameProperty Value
Molecular Weight169.18
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count4
Rotatable Bond Count2
Complexity142
Monoisotopic Mass169.074
Exact Mass169.074
XLogP-0.8
Formal Charge0
Heavy Atom Count12
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Isotope Atom Count0
Covalently-Bonded Unit Count1

ADMET

Model Result Probability
Absorption
Blood-Brain BarrierBBB+0.6889
Human Intestinal AbsorptionHIA+0.9728
Caco-2 PermeabilityCaco2-0.8958
P-glycoprotein SubstrateNon-substrate0.5579
P-glycoprotein InhibitorNon-inhibitor0.9723
Non-inhibitor0.9221
Renal Organic Cation TransporterNon-inhibitor0.8177
Distribution
Subcellular localizationMitochondria0.7589
Metabolism
CYP450 2C9 SubstrateNon-substrate0.7386
CYP450 2D6 SubstrateNon-substrate0.7810
CYP450 3A4 SubstrateNon-substrate0.7104
CYP450 1A2 InhibitorNon-inhibitor0.9046
CYP450 2C9 InhibitorNon-inhibitor0.9071
CYP450 2D6 InhibitorNon-inhibitor0.9230
CYP450 2C19 InhibitorNon-inhibitor0.9025
CYP450 3A4 InhibitorNon-inhibitor0.8648
CYP Inhibitory PromiscuityLow CYP Inhibitory Promiscuity0.6950
Excretion
Toxicity
Human Ether-a-go-go-Related Gene InhibitionWeak inhibitor0.8454
Non-inhibitor0.8734
AMES ToxicityNon AMES toxic0.9133
CarcinogensNon-carcinogens0.9418
Fish ToxicityLow FHMT0.8792
Tetrahymena Pyriformis ToxicityLow TPT0.8757
Honey Bee ToxicityLow HBT0.5988
BiodegradationNot ready biodegradable0.5678
Acute Oral ToxicityIII0.8153
Carcinogenicity (Three-class)Non-required0.6568

Model Value Unit
Absorption
Aqueous solubility-0.9348LogS
Caco-2 Permeability0.9728LogPapp, cm/s
Distribution
Metabolism
Excretion
Toxicity
Rat Acute Toxicity1.6573LD50, mol/kg
Fish Toxicity2.4357pLC50, mg/L
Tetrahymena Pyriformis Toxicity-0.3762pIGC50, ug/L

References

TitleJournalDatePubmed ID
Rice flakes produced from commercial wild rice: Chemical compositions, vitamin B compounds, mineral and trace element contents and their dietary intake evaluation.Food Chem2018 Oct 3029853391
Effect of heat treatment on 4'-O-methylpyridoxine (MPN) content in Ginkgo biloba seed extract solution.J Sci Food Agric2018 Oct29572951
Deficiency of dietary pyridoxine disturbed the intestinal physical barrierfunction of young grass carp (Ctenopharyngodon idella).Fish Shellfish Immunol2018 Mar29339045
Influence of vitamin intake and MTHFR polymorphism on the levels of DNA damage intobacco farmers.Int J Occup Environ Health2018 Jul 27:1-830052162
Enhanced Prophylaxis plus Antiretroviral Therapy for Advanced HIV Infection in Africa.N Engl J Med2017 Jul 2028723333
Chemically modified cellulose strips with pyridoxal conjugated red fluorescentgold nanoclusters for nanomolar detection of mercuric ions.Biosens Bioelectron2017 Apr 1527940235
High-concentrate diets based on forages harvested at different maturity stagesaffect ruminal synthesis of B vitamins in lactating dairy cows.Animal2017 Apr27573890
Protective Effects of Pyridoxamine Supplementation in the Early Stages ofDiet-Induced Kidney Dysfunction.Biomed Res Int201729214163
Bioavailability of Cu, Zn and Mn from Mineral Chelates or Blends of InorganicSalts in Growing Turkeys Fed with Supplemental Riboflavin and/or Pyridoxine.Biol Trace Elem Res2016 Sep26781955
Dietary Pyridoxine Protects against Stress and Maintains ImmunohaematologicalStatus in Chanos chanos Exposed to Endosulfan.Basic Clin Pharmacol Toxicol2016 Sep27038044
The effects of magnesium supplementation on subjective anxiety.Magnes Res2016 Mar 127869100
Methylating micronutrient supplementation during pregnancy influences foetalhepatic gene expression and IGF signalling and increases foetal weight.Eur J Nutr2016 Jun26169873
Nutraceutical approaches to homocysteine lowering in hypertensive subjects at lowcardiovascular risk: a multicenter, randomized clinical trial.J Biol Regul Homeost Agents2016 Jul-Sep27655522
Effect of dietary lysine restriction and arginine supplementation in two patients with pyridoxine-dependent epilepsy.Mol Genet Metab2016 Jul27324284
Mutations in PROSC Disrupt Cellular Pyridoxal Phosphate Homeostasis and Cause Vitamin-B<sub>6</sub>-Dependent Epilepsy.Am J Hum Genet2016 Dec 127912044
Decoration of multi-walled carbon nanotubes with metal nanoparticles insupercritical carbon dioxide medium as a novel approach for the modification ofscreen-printed electrodes.Talanta2016 Dec 127769480
Complementary Feeding Diets Made of Local Foods Can Be Optimized, but Additional Interventions Will Be Needed to Meet Iron and Zinc Requirements in 6- to23-Month-Old Children in Low- and Middle-Income Countries.Food Nutr Bull2016 Dec27334774
Dietary B Vitamins and Serum C-Reactive Protein in Persons With HumanImmunodeficiency Virus Infection: The Positive Living With HIV (POLH) Study.Food Nutr Bull2016 Dec27370977
Feeding pyridoxine prevents Saprolegnia parasitica infection in fish Labeorohita.Fish Shellfish Immunol2016 Dec27670085
Effect and mechanism of pyridoxamine on the lipid peroxidation and stability of polyunsaturated fatty acids in beef patties.J Sci Food Agric2016 Aug26538517

Targets

General Function:
Ubiquitin protein ligase binding
Specific Function:
Hydro-lyase catalyzing the first step of the transsulfuration pathway, where the hydroxyl group of L-serine is displaced by L-homocysteine in a beta-replacement reaction to form L-cystathionine, the precursor of L-cysteine. This catabolic route allows the elimination of L-methionine and the toxic metabolite L-homocysteine (PubMed:23981774, PubMed:20506325, PubMed:23974653). Also involved in the production of hydrogen sulfide, a gasotransmitter with signaling and cytoprotective effects on neurons (By similarity).
Gene Name:
CBS
Uniprot ID:
P35520
Molecular Weight:
60586.05 Da
Mechanism of Action:
Vitamin B6 is the collective term for a group of three related compounds, pyridoxine (PN), pyridoxal (PL) and pyridoxamine (PM), and their phosphorylated derivatives, pyridoxine 5'-phosphate (PNP), pyridoxal 5'-phosphate (PLP) and pyridoxamine 5'-phosphate (PMP). Although all six of these compounds should technically be referred to as vitamin B6, the term vitamin B6 is commonly used interchangeably with just one of them, pyridoxine. Vitamin B6, principally in the form of the coenzyme pyridoxal 5'-phosphate, is involved in a wide range of biochemical reactions, including the metabolism of amino acids and glycogen, the synthesis of nucleic acids, hemogloblin, sphingomyelin and other sphingolipids, and the synthesis of the neurotransmitters serotonin, dopamine, norepinephrine and gamma-aminobutyric acid (GABA).
General Function:
O-phospho-l-serine:2-oxoglutarate aminotransferase activity
Specific Function:
Catalyzes the reversible conversion of 3-phosphohydroxypyruvate to phosphoserine and of 3-hydroxy-2-oxo-4-phosphonooxybutanoate to phosphohydroxythreonine.
Gene Name:
PSAT1
Uniprot ID:
Q9Y617
Molecular Weight:
40422.355 Da
Mechanism of Action:
Vitamin B6 is the collective term for a group of three related compounds, pyridoxine (PN), pyridoxal (PL) and pyridoxamine (PM), and their phosphorylated derivatives, pyridoxine 5'-phosphate (PNP), pyridoxal 5'-phosphate (PLP) and pyridoxamine 5'-phosphate (PMP). Although all six of these compounds should technically be referred to as vitamin B6, the term vitamin B6 is commonly used interchangeably with just one of them, pyridoxine. Vitamin B6, principally in the form of the coenzyme pyridoxal 5'-phosphate, is involved in a wide range of biochemical reactions, including the metabolism of amino acids and glycogen, the synthesis of nucleic acids, hemogloblin, sphingomyelin and other sphingolipids, and the synthesis of the neurotransmitters serotonin, dopamine, norepinephrine and gamma-aminobutyric acid (GABA).
General Function:
Zinc ion binding
Specific Function:
Required for synthesis of pyridoxal-5-phosphate from vitamin B6.
Gene Name:
PDXK
Uniprot ID:
O00764
Molecular Weight:
35102.105 Da
Mechanism of Action:
Vitamin B6 is the collective term for a group of three related compounds, pyridoxine (PN), pyridoxal (PL) and pyridoxamine (PM), and their phosphorylated derivatives, pyridoxine 5'-phosphate (PNP), pyridoxal 5'-phosphate (PLP) and pyridoxamine 5'-phosphate (PMP). Although all six of these compounds should technically be referred to as vitamin B6, the term vitamin B6 is commonly used interchangeably with just one of them, pyridoxine. Vitamin B6, principally in the form of the coenzyme pyridoxal 5'-phosphate, is involved in a wide range of biochemical reactions, including the metabolism of amino acids and glycogen, the synthesis of nucleic acids, hemogloblin, sphingomyelin and other sphingolipids, and the synthesis of the neurotransmitters serotonin, dopamine, norepinephrine and gamma-aminobutyric acid (GABA).
General Function:
Pyridoxal phosphatase activity
Specific Function:
Protein serine phosphatase that dephosphorylates 'Ser-3' in cofilin and probably also dephosphorylates phospho-serine residues in DSTN. Regulates cofilin-dependent actin cytoskeleton reorganization. Required for normal progress through mitosis and normal cytokinesis. Does not dephosphorylate phospho-threonines in LIMK1. Does not dephosphorylate peptides containing phospho-tyrosine. Pyridoxal phosphate phosphatase. Has some activity towards pyridoxal 5'-phosphate (PLP), pyridoxine 5'-phosphate (PMP) and pyridoxine 5'-phosphate (PNP), with a highest activity with PLP followed by PNP.
Gene Name:
PDXP
Uniprot ID:
Q96GD0
Molecular Weight:
31697.735 Da
Mechanism of Action:
Vitamin B6 is the collective term for a group of three related compounds, pyridoxine (PN), pyridoxal (PL) and pyridoxamine (PM), and their phosphorylated derivatives, pyridoxine 5'-phosphate (PNP), pyridoxal 5'-phosphate (PLP) and pyridoxamine 5'-phosphate (PMP). Although all six of these compounds should technically be referred to as vitamin B6, the term vitamin B6 is commonly used interchangeably with just one of them, pyridoxine. Vitamin B6, principally in the form of the coenzyme pyridoxal 5'-phosphate, is involved in a wide range of biochemical reactions, including the metabolism of amino acids and glycogen, the synthesis of nucleic acids, hemogloblin, sphingomyelin and other sphingolipids, and the synthesis of the neurotransmitters serotonin, dopamine, norepinephrine and gamma-aminobutyric acid (GABA).
General Function:
Toxic substance binding
Specific Function:
Serum albumin, the main protein of plasma, has a good binding capacity for water, Ca(2+), Na(+), K(+), fatty acids, hormones, bilirubin and drugs. Its main function is the regulation of the colloidal osmotic pressure of blood. Major zinc transporter in plasma, typically binds about 80% of all plasma zinc.
Gene Name:
ALB
Uniprot ID:
P02768
Molecular Weight:
69365.94 Da
Mechanism of Action:
Vitamin B6 is the collective term for a group of three related compounds, pyridoxine (PN), pyridoxal (PL) and pyridoxamine (PM), and their phosphorylated derivatives, pyridoxine 5'-phosphate (PNP), pyridoxal 5'-phosphate (PLP) and pyridoxamine 5'-phosphate (PMP). Although all six of these compounds should technically be referred to as vitamin B6, the term vitamin B6 is commonly used interchangeably with just one of them, pyridoxine. Vitamin B6, principally in the form of the coenzyme pyridoxal 5'-phosphate, is involved in a wide range of biochemical reactions, including the metabolism of amino acids and glycogen, the synthesis of nucleic acids, hemogloblin, sphingomyelin and other sphingolipids, and the synthesis of the neurotransmitters serotonin, dopamine, norepinephrine and gamma-aminobutyric acid (GABA).
General Function:
L-aminoadipate-semialdehyde dehydrogenase activity
Specific Function:
Multifunctional enzyme mediating important protective effects. Metabolizes betaine aldehyde to betaine, an important cellular osmolyte and methyl donor. Protects cells from oxidative stress by metabolizing a number of lipid peroxidation-derived aldehydes. Involved in lysine catabolism.
Gene Name:
ALDH7A1
Uniprot ID:
P49419
Molecular Weight:
58486.74 Da
Mechanism of Action:
Vitamin B6 is the collective term for a group of three related compounds, pyridoxine (PN), pyridoxal (PL) and pyridoxamine (PM), and their phosphorylated derivatives, pyridoxine 5'-phosphate (PNP), pyridoxal 5'-phosphate (PLP) and pyridoxamine 5'-phosphate (PMP). Although all six of these compounds should technically be referred to as vitamin B6, the term vitamin B6 is commonly used interchangeably with just one of them, pyridoxine. Vitamin B6, principally in the form of the coenzyme pyridoxal 5'-phosphate, is involved in a wide range of biochemical reactions, including the metabolism of amino acids and glycogen, the synthesis of nucleic acids, hemogloblin, sphingomyelin and other sphingolipids, and the synthesis of the neurotransmitters serotonin, dopamine, norepinephrine and gamma-aminobutyric acid (GABA).