Basic Info

Common NameAflatoxin B1(F04874)
2D Structure
Description

Aflatoxins are naturally occurring mycotoxins that are produced by many species of Aspergillus, a fungus, most notably Aspergillus flavus and Aspergillus parasiticus. At least 13 different types of aflatoxin are produced in nature. Aflatoxin B1 is considered the most toxic and is produced by both Aspergillus flavus and Aspergillus parasiticus. The native habitat of Aspergillus is in soil, decaying vegetation, hay, and grains undergoing microbiological deterioration and it invades all types of organic substrates whenever conditions are favorable for its growth. Favorable conditions include high moisture content (at least 7%) and high temperature. Aflatoxins B1 (AFB1) are contaminants of improperly stored foods; they are potent genotoxic and carcinogenic compounds, exerting their effects through damage to DNA. They can also induce mutations that increase oxidative damage. (A7847). Crops which are frequently affected by Aspergillus contamination include cereals (maize, sorghum, pearl millet, rice, wheat), oilseeds (peanut, soybean, sunflower, cotton), spices (chile peppers, black pepper, coriander, turmeric, ginger), and tree nuts (almond, pistachio, walnut, coconut, brazil nut).

FRCD IDF04874
CAS Number1162-65-8
PubChem CID14403
FormulaC17H12O6
IUPAC Name

None

InChI Key

OQIQSTLJSLGHID-UHFFFAOYSA-N

InChI

InChI=1S/C17H12O6/c1-20-10-6-11-14(8-4-5-21-17(8)22-11)15-13(10)7-2-3-9(18)12(7)16(19)23-15/h4-6,8,17H,2-3H2,1H3

Canonical SMILES

COC1=C2C3=C(C(=O)CC3)C(=O)OC2=C4C5C=COC5OC4=C1

Isomeric SMILES

COC1=C2C3=C(C(=O)CC3)C(=O)OC2=C4C5C=COC5OC4=C1

Synonyms
        
            AFBI
        
            AFB1
        
            Aflatoxin-B1
        
            Cyclopenta[c]furo[3',2':4,5]furo[2,3-h][1]benzopyran-1,11-dione, 2,3,6a.alpha.,9a.alpha.-tetrahydro-4-methoxy-
        
            NSC529592
        
            Aflaloxin B1
        
            Cyclopenta[c]furo[3',2':4,5]furo[2,3-h][1]benzopyran-1,11-dione, 2,3,6a,9a-tetrahydro-4-methoxy-, (6aR-cis)-
        
            AC1L23RJ
        
            AC1Q6P7N
        
            SCHEMBL126479
        
Classifies
                

                  
                    Fungal Toxin
                  

                
        
Update DateNov 13, 2018 17:07

Chemical Taxonomy

KingdomOrganic compounds
SuperclassPhenylpropanoids and polyketides
ClassCoumarins and derivatives
SubclassFuranocoumarins
Intermediate Tree NodesAngular furanocoumarins - Aflatoxins
Direct ParentDifurocoumarocyclopentenones
Alternative Parents
Molecular FrameworkAromatic heteropolycyclic compounds
SubstituentsDifurocoumarocyclopentenone - Benzopyran - 1-benzopyran - Coumaran - Anisole - Aryl alkyl ketone - Aryl ketone - Alkyl aryl ether - Pyranone - Pyran - Benzenoid - Heteroaromatic compound - Dihydrofuran - Lactone - Ketone - Ether - Acetal - Oxacycle - Organoheterocyclic compound - Organooxygen compound - Organic oxygen compound - Hydrocarbon derivative - Organic oxide - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as difurocoumarocyclopentenones. These are polycyclic aromatic compounds containing a cyclopenten-2-one ring fused to the coumarin moiety of the difurocoumarin skeleton.

Properties

Property NameProperty Value
Molecular Weight312.277
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count6
Rotatable Bond Count1
Complexity650
Monoisotopic Mass312.063
Exact Mass312.063
XLogP1.6
Formal Charge0
Heavy Atom Count23
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count2
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Isotope Atom Count0
Covalently-Bonded Unit Count1

ADMET

Model Result Probability
Absorption
Blood-Brain BarrierBBB+0.9264
Human Intestinal AbsorptionHIA+0.9846
Caco-2 PermeabilityCaco2+0.5377
P-glycoprotein SubstrateSubstrate0.5200
P-glycoprotein InhibitorInhibitor0.5594
Non-inhibitor0.5494
Renal Organic Cation TransporterNon-inhibitor0.7736
Distribution
Subcellular localizationMitochondria0.8353
Metabolism
CYP450 2C9 SubstrateNon-substrate0.7461
CYP450 2D6 SubstrateNon-substrate0.8529
CYP450 3A4 SubstrateNon-substrate0.5578
CYP450 1A2 InhibitorInhibitor0.8746
CYP450 2C9 InhibitorInhibitor0.6650
CYP450 2D6 InhibitorNon-inhibitor0.5513
CYP450 2C19 InhibitorInhibitor0.7727
CYP450 3A4 InhibitorInhibitor0.5184
CYP Inhibitory PromiscuityHigh CYP Inhibitory Promiscuity0.6208
Excretion
Toxicity
Human Ether-a-go-go-Related Gene InhibitionWeak inhibitor0.7855
Non-inhibitor0.9440
AMES ToxicityAMES toxic0.9737
CarcinogensNon-carcinogens0.9673
Fish ToxicityHigh FHMT0.9564
Tetrahymena Pyriformis ToxicityHigh TPT0.9979
Honey Bee ToxicityHigh HBT0.7512
BiodegradationNot ready biodegradable0.6241
Acute Oral ToxicityI0.8088
Carcinogenicity (Three-class)Danger0.7481

Model Value Unit
Absorption
Aqueous solubility-3.7039LogS
Caco-2 Permeability0.7714LogPapp, cm/s
Distribution
Metabolism
Excretion
Toxicity
Rat Acute Toxicity3.5902LD50, mol/kg
Fish Toxicity-0.8170pLC50, mg/L
Tetrahymena Pyriformis Toxicity1.4040pIGC50, ug/L

References

TitleJournalDatePubmed ID
Aflatoxin contamination in nuts marketed in Italy: preliminary results.Ann Ig2018 Sep-Oct30062368
Simultaneous determination of trace Aflatoxin B<sub>1</sub> and Ochratoxin A by aptamer-based microchip capillary electrophoresis in food samples.J Chromatogr A2018 Sep 2830037541
Quantum dot nanobead-based multiplexed immunochromatographic assay for simultaneous detection of aflatoxin B<sub>1</sub> and zearalenone.Anal Chim Acta2018 Sep 2629801605
Maternal aflatoxin exposure during pregnancy and adverse birth outcomes in Uganda.Matern Child Nutr2018 Sep 2230242967
Contaminants in Grain-A Major Risk for Whole Grain Safety?Nutrients2018 Sep 230200531
Graphene quantum dots-based nano-biointerface platform for food toxin detection.Anal Bioanal Chem2018 Sep 1430218125
In vitro model to assess the adsorption of oral veterinary drugs to mycotoxin binders in a feed- and aflatoxin B1-containing buffered matrix.Food Addit Contam Part A Chem Anal Control Expo Risk Assess2018 Sep30016205
Co-occurrence of mycotoxins in commercial formula milk and cereal-based baby food on the Qatar market.Food Addit Contam Part B Surveill2018 Sep29490584
Zearalenone reduction by commercial peroxidase enzyme and peroxidases from soybean bran and rice bran.Food Addit Contam Part A Chem Anal Control Expo Risk Assess2018 Sep29889651
The production of yeast cell wall using an agroindustrial waste influences thewall thickness and is implicated on the aflatoxin B1 adsorption process.Food Res Int2018 Sep30007690
Effects of gamma irradiation on aflatoxin B1 levels in soybean and on theproperties of soybean and soybean oil.Appl Radiat Isot2018 Sep29852404
Mechanism and kinetics of degrading aflatoxin B<sub>1</sub> by salt tolerant Candida versatilis CGMCC 3790.J Hazard Mater2018 Oct 530053743
Reduced graphene oxide and gold nanoparticle composite-based solid-phase extraction coupled with ultra-high-performance liquid chromatography-tandem mass spectrometry for the determination of 9 mycotoxins in milk.Food Chem2018 Oct 3029853368
Penicillium gravinicasei, a new species isolated from cave cheese in Apulia,Italy.Int J Food Microbiol2018 Oct 329929177
Application of Stable Isotope Dilution and Liquid Chromatography Tandem Mass Spectrometry for Multi-Mycotoxin Analysis in Edible Oils.J AOAC Int2018 Oct 1030305203
Encapsulation of cinnamon essential oil in whey protein enhances the protective effect against single or combined sub-chronic toxicity of fumonisin B<sub>1</sub> and/or aflatoxin B<sub>1</sub> in rats.Environ Sci Pollut Res Int2018 Oct30112645
Protective role of curcumin in ameliorating AFB<sub>1</sub>-induced apoptosis via mitochondrial pathway in liver cells.Mol Biol Rep2018 Oct29974318
Sensitivity enhancement for mycotoxin determination by optical waveguide lightmode spectroscopy using gold nanoparticles of different size and origin.Food Chem2018 Nov 3029934142
Novel quartz crystal microbalance immunodetection of aflatoxin B<sub>1</sub> coupling cargo-encapsulated liposome with indicator-triggered displacement assay.Anal Chim Acta2018 Nov 1530119735
Assessing the combined toxicity of the natural toxins, aflatoxin B<sub>1</sub>, fumonisin B<sub>1</sub> and microcystin-LR by high content analysis.Food Chem Toxicol2018 Nov30253246

Targets

General Function:
Glutathione transferase activity
Specific Function:
Conjugation of reduced glutathione to a wide number of exogenous and endogenous hydrophobic electrophiles.
Gene Name:
GSTA1
Uniprot ID:
P08263
Molecular Weight:
25630.785 Da
References
  1. Sluis-Cremer N, Wallace L, Burke J, Stevens J, Dirr H: Aflatoxin B1 and sulphobromophthalein binding to the dimeric human glutathione S-transferase A1-1: a fluorescence spectroscopic analysis. Eur J Biochem. 1998 Oct 15;257(2):434-42. [9826190 ]
General Function:
Vitamin d3 25-hydroxylase activity
Specific Function:
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It performs a variety of oxidation reactions (e.g. caffeine 8-oxidation, omeprazole sulphoxidation, midazolam 1'-hydroxylation and midazolam 4-hydroxylation) of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. Acts as a 1,8-cineole 2-exo-monooxygenase. The enzyme also hydroxylates etoposide (PubMed:11159812). Catalyzes 4-beta-hydroxylation of cholesterol. May catalyze 25-hydroxylation of cholesterol in vitro (PubMed:21576599).
Gene Name:
CYP3A4
Uniprot ID:
P08684
Molecular Weight:
57342.67 Da
Mechanism of Action:
In order to exert its toxic effects, aflatoxin B1 must first be activated to its epoxide, aflatoxin B1 2,3-oxide, by the cytochome P-450 enzymes CYP1A2 and CYP3A4.
References
  1. Eaton DL, Gallagher EP: Mechanisms of aflatoxin carcinogenesis. Annu Rev Pharmacol Toxicol. 1994;34:135-72. [8042848 ]
General Function:
Sodium-independent organic anion transmembrane transporter activity
Specific Function:
Mediates saturable uptake of estrone sulfate, dehydroepiandrosterone sulfate and related compounds.
Gene Name:
SLC22A11
Uniprot ID:
Q9NSA0
Molecular Weight:
59970.945 Da
Mechanism of Action:
Mycotoxins are often able to enter the liver and kidney by human organic anion transporters (hOATs) and human organic cation transporters (hOCTs). They can also inhibit uptake of anions and cations by these transporters, interefering with the secretion of endogenous metabolites, drugs, and xenobiotics including themselves. This results in increased cellular accumulation of toxic compounds causing nephro- and hepatotoxicity.
References
  1. Tachampa K, Takeda M, Khamdang S, Noshiro-Kofuji R, Tsuda M, Jariyawat S, Fukutomi T, Sophasan S, Anzai N, Endou H: Interactions of organic anion transporters and organic cation transporters with mycotoxins. J Pharmacol Sci. 2008 Mar;106(3):435-43. Epub 2008 Mar 5. [18319568 ]
General Function:
Quaternary ammonium group transmembrane transporter activity
Specific Function:
Mediates tubular uptake of organic compounds from circulation. Mediates the influx of agmatine, dopamine, noradrenaline (norepinephrine), serotonin, choline, famotidine, ranitidine, histamin, creatinine, amantadine, memantine, acriflavine, 4-[4-(dimethylamino)-styryl]-N-methylpyridinium ASP, amiloride, metformin, N-1-methylnicotinamide (NMN), tetraethylammonium (TEA), 1-methyl-4-phenylpyridinium (MPP), cimetidine, cisplatin and oxaliplatin. Cisplatin may develop a nephrotoxic action. Transport of creatinine is inhibited by fluoroquinolones such as DX-619 and LVFX. This transporter is a major determinant of the anticancer activity of oxaliplatin and may contribute to antitumor specificity.
Gene Name:
SLC22A2
Uniprot ID:
O15244
Molecular Weight:
62579.99 Da
Mechanism of Action:
Mycotoxins are often able to enter the liver and kidney by human organic anion transporters (hOATs) and human organic cation transporters (hOCTs). They can also inhibit uptake of anions and cations by these transporters, interefering with the secretion of endogenous metabolites, drugs, and xenobiotics including themselves. This results in increased cellular accumulation of toxic compounds causing nephro- and hepatotoxicity.
References
  1. Tachampa K, Takeda M, Khamdang S, Noshiro-Kofuji R, Tsuda M, Jariyawat S, Fukutomi T, Sophasan S, Anzai N, Endou H: Interactions of organic anion transporters and organic cation transporters with mycotoxins. J Pharmacol Sci. 2008 Mar;106(3):435-43. Epub 2008 Mar 5. [18319568 ]
General Function:
Sodium-independent organic anion transmembrane transporter activity
Specific Function:
Mediates sodium-independent multispecific organic anion transport. Transport of prostaglandin E2, prostaglandin F2, tetracycline, bumetanide, estrone sulfate, glutarate, dehydroepiandrosterone sulfate, allopurinol, 5-fluorouracil, paclitaxel, L-ascorbic acid, salicylate, ethotrexate, and alpha-ketoglutarate.
Gene Name:
SLC22A7
Uniprot ID:
Q9Y694
Molecular Weight:
60025.025 Da
Mechanism of Action:
Mycotoxins are often able to enter the liver and kidney by human organic anion transporters (hOATs) and human organic cation transporters (hOCTs). They can also inhibit uptake of anions and cations by these transporters, interefering with the secretion of endogenous metabolites, drugs, and xenobiotics including themselves. This results in increased cellular accumulation of toxic compounds causing nephro- and hepatotoxicity.
References
  1. Tachampa K, Takeda M, Khamdang S, Noshiro-Kofuji R, Tsuda M, Jariyawat S, Fukutomi T, Sophasan S, Anzai N, Endou H: Interactions of organic anion transporters and organic cation transporters with mycotoxins. J Pharmacol Sci. 2008 Mar;106(3):435-43. Epub 2008 Mar 5. [18319568 ]
General Function:
Superoxide dismutase copper chaperone activity
Specific Function:
May supply copper to copper-requiring proteins within the secretory pathway, when localized in the trans-Golgi network. Under conditions of elevated extracellular copper, it relocalized to the plasma membrane where it functions in the efflux of copper from cells.
Gene Name:
ATP7A
Uniprot ID:
Q04656
Molecular Weight:
163372.275 Da
Mechanism of Action:
AFB1 inhibits activated Ca (2+)-ATPase by binding to an important site in the calmodulin-binding domain of the enzyme.
References
  1. Adebayo AO, Okunade GW, Olorunsogo OO: The anticalmodulin effect of aflatoxin B1 on purified erythrocyte Ca(2+)-ATPase. Biosci Rep. 1995 Aug;15(4):209-20. [8562872 ]
General Function:
Oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen
Specific Function:
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. Most active in catalyzing 2-hydroxylation. Caffeine is metabolized primarily by cytochrome CYP1A2 in the liver through an initial N3-demethylation. Also acts in the metabolism of aflatoxin B1 and acetaminophen. Participates in the bioactivation of carcinogenic aromatic and heterocyclic amines. Catalizes the N-hydroxylation of heterocyclic amines and the O-deethylation of phenacetin.
Gene Name:
CYP1A2
Uniprot ID:
P05177
Molecular Weight:
58293.76 Da
Mechanism of Action:
In order to exert its toxic effects, aflatoxin B1 must first be activated to its epoxide, aflatoxin B1 2,3-oxide, by the cytochome P-450 enzymes CYP1A2 and CYP3A4.
References
  1. Eaton DL, Gallagher EP: Mechanisms of aflatoxin carcinogenesis. Annu Rev Pharmacol Toxicol. 1994;34:135-72. [8042848 ]
General Function:
Secondary active organic cation transmembrane transporter activity
Specific Function:
Translocates a broad array of organic cations with various structures and molecular weights including the model compounds 1-methyl-4-phenylpyridinium (MPP), tetraethylammonium (TEA), N-1-methylnicotinamide (NMN), 4-(4-(dimethylamino)styryl)-N-methylpyridinium (ASP), the endogenous compounds choline, guanidine, histamine, epinephrine, adrenaline, noradrenaline and dopamine, and the drugs quinine, and metformin. The transport of organic cations is inhibited by a broad array of compounds like tetramethylammonium (TMA), cocaine, lidocaine, NMDA receptor antagonists, atropine, prazosin, cimetidine, TEA and NMN, guanidine, cimetidine, choline, procainamide, quinine, tetrabutylammonium, and tetrapentylammonium. Translocates organic cations in an electrogenic and pH-independent manner. Translocates organic cations across the plasma membrane in both directions. Transports the polyamines spermine and spermidine. Transports pramipexole across the basolateral membrane of the proximal tubular epithelial cells. The choline transport is activated by MMTS. Regulated by various intracellular signaling pathways including inhibition by protein kinase A activation, and endogenously activation by the calmodulin complex, the calmodulin-dependent kinase II and LCK tyrosine kinase.
Gene Name:
SLC22A1
Uniprot ID:
O15245
Molecular Weight:
61153.345 Da
Mechanism of Action:
Mycotoxins are often able to enter the liver and kidney by human organic anion transporters (hOATs) and human organic cation transporters (hOCTs). They can also inhibit uptake of anions and cations by these transporters, interefering with the secretion of endogenous metabolites, drugs, and xenobiotics including themselves. This results in increased cellular accumulation of toxic compounds causing nephro- and hepatotoxicity.
References
  1. Tachampa K, Takeda M, Khamdang S, Noshiro-Kofuji R, Tsuda M, Jariyawat S, Fukutomi T, Sophasan S, Anzai N, Endou H: Interactions of organic anion transporters and organic cation transporters with mycotoxins. J Pharmacol Sci. 2008 Mar;106(3):435-43. Epub 2008 Mar 5. [18319568 ]
General Function:
Sodium-independent organic anion transmembrane transporter activity
Specific Function:
Involved in the renal elimination of endogenous and exogenous organic anions. Functions as organic anion exchanger when the uptake of one molecule of organic anion is coupled with an efflux of one molecule of endogenous dicarboxylic acid (glutarate, ketoglutarate, etc). Mediates the sodium-independent uptake of 2,3-dimercapto-1-propanesulfonic acid (DMPS) (By similarity). Mediates the sodium-independent uptake of p-aminohippurate (PAH), ochratoxin (OTA), acyclovir (ACV), 3'-azido-3-'deoxythymidine (AZT), cimetidine (CMD), 2,4-dichloro-phenoxyacetate (2,4-D), hippurate (HA), indoleacetate (IA), indoxyl sulfate (IS) and 3-carboxy-4-methyl-5-propyl-2-furanpropionate (CMPF), cidofovir, adefovir, 9-(2-phosphonylmethoxyethyl) guanine (PMEG), 9-(2-phosphonylmethoxyethyl) diaminopurine (PMEDAP) and edaravone sulfate. PAH uptake is inhibited by p-chloromercuribenzenesulphonate (PCMBS), diethyl pyrocarbonate (DEPC), sulindac, diclofenac, carprofen, glutarate and okadaic acid (By similarity). PAH uptake is inhibited by benzothiazolylcysteine (BTC), S-chlorotrifluoroethylcysteine (CTFC), cysteine S-conjugates S-dichlorovinylcysteine (DCVC), furosemide, steviol, phorbol 12-myristate 13-acetate (PMA), calcium ionophore A23187, benzylpenicillin, furosemide, indomethacin, bumetamide, losartan, probenecid, phenol red, urate, and alpha-ketoglutarate.
Gene Name:
SLC22A6
Uniprot ID:
Q4U2R8
Molecular Weight:
61815.78 Da
Mechanism of Action:
Mycotoxins are often able to enter the liver and kidney by human organic anion transporters (hOATs) and human organic cation transporters (hOCTs). They can also inhibit uptake of anions and cations by these transporters, interefering with the secretion of endogenous metabolites, drugs, and xenobiotics including themselves. This results in increased cellular accumulation of toxic compounds causing nephro- and hepatotoxicity.
References
  1. Tachampa K, Takeda M, Khamdang S, Noshiro-Kofuji R, Tsuda M, Jariyawat S, Fukutomi T, Sophasan S, Anzai N, Endou H: Interactions of organic anion transporters and organic cation transporters with mycotoxins. J Pharmacol Sci. 2008 Mar;106(3):435-43. Epub 2008 Mar 5. [18319568 ]
General Function:
Sodium-independent organic anion transmembrane transporter activity
Specific Function:
Plays an important role in the excretion/detoxification of endogenous and exogenous organic anions, especially from the brain and kidney. Involved in the transport basolateral of steviol, fexofenadine. Transports benzylpenicillin (PCG), estrone-3-sulfate (E1S), cimetidine (CMD), 2,4-dichloro-phenoxyacetate (2,4-D), p-amino-hippurate (PAH), acyclovir (ACV) and ochratoxin (OTA).
Gene Name:
SLC22A8
Uniprot ID:
Q8TCC7
Molecular Weight:
59855.585 Da
Mechanism of Action:
Mycotoxins are often able to enter the liver and kidney by human organic anion transporters (hOATs) and human organic cation transporters (hOCTs). They can also inhibit uptake of anions and cations by these transporters, interefering with the secretion of endogenous metabolites, drugs, and xenobiotics including themselves. This results in increased cellular accumulation of toxic compounds causing nephro- and hepatotoxicity.
References
  1. Tachampa K, Takeda M, Khamdang S, Noshiro-Kofuji R, Tsuda M, Jariyawat S, Fukutomi T, Sophasan S, Anzai N, Endou H: Interactions of organic anion transporters and organic cation transporters with mycotoxins. J Pharmacol Sci. 2008 Mar;106(3):435-43. Epub 2008 Mar 5. [18319568 ]