Aflatoxin B1 metabolism (Rattus norvegicus)

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4-112, 32, 3DNA adductsnonenzymatic(pH-dependent)nonenzymaticAflatoxin M1 epoxideAflatoxin B1 C8-monoaldehydeAflatoxin B1 C8-monoalcoholEphx1Cyp1a2Aflatoxin M1Aflatoxin B1 C6-monoaldehydeAflatoxin-endo-B1-8,9-epoxideAflatoxin B1 dialdehydeCyp1a2GSTM1Aflatoxin B1-6,8-dialcoholAflatoxin B1 C6-monoalcoholCYP3A4Aflatoxin B1 8,9-dihydrodiolAflatoxin B1 exo-8,9-epoxideCYP2A13CYP3A4CYP2A13Aflatoxin B1 exo-8,9-epoxide-GSHCyp1a2Gstt1Akr7a3Akr7a2aflatoxin B1Aflatoxin Q11


Aflatoxins are naturally occurring mycotoxins that are produced by many species of Aspergillus, a fungus, most notably Aspergillus flavus and Aspergillus parasiticus. After entering the body, aflatoxins are metabolized by the liver to a reactive intermediate, aflatoxin M1, an epoxide. Aflatoxin B1 is considered the most toxic and is produced by both Aspergillus flavus and Aspergillus parasiticus. Source: Wikipedia


This pathway was inferred from Homo sapiens pathway WP699(r30253) with a 58% conversion rate.

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  1. Raney KD, Coles B, Guengerich FP, Harris TM; ''The endo-8,9-epoxide of aflatoxin B1: a new metabolite.''; Chem Res Toxicol, 1992 PubMed Europe PMC Scholia
  2. He XY, Tang L, Wang SL, Cai QS, Wang JS, Hong JY; ''Efficient activation of aflatoxin B1 by cytochrome P450 2A13, an enzyme predominantly expressed in human respiratory tract.''; Int J Cancer, 2006 PubMed Europe PMC Scholia
  3. Zhu LR, Thomas PE, Lu G, Reuhl KR, Yang GY, Wang LD, Wang SL, Yang CS, He XY, Hong JY; ''CYP2A13 in human respiratory tissues and lung cancers: an immunohistochemical study with a new peptide-specific antibody.''; Drug Metab Dispos, 2006 PubMed Europe PMC Scholia
  4. Guengerich FP, Cai H, McMahon M, Hayes JD, Sutter TR, Groopman JD, Deng Z, Harris TM; ''Reduction of aflatoxin B1 dialdehyde by rat and human aldo-keto reductases.''; Chem Res Toxicol, 2001 PubMed Europe PMC Scholia
  5. Guengerich FP; ''Cytochrome P450s and other enzymes in drug metabolism and toxicity.''; AAPS J, 2006 PubMed Europe PMC Scholia
  6. Guengerich FP, Arneson KO, Williams KM, Deng Z, Harris TM; ''Reaction of aflatoxin B(1) oxidation products with lysine.''; Chem Res Toxicol, 2002 PubMed Europe PMC Scholia
  7. Kensler TW, Qian GS, Chen JG, Groopman JD; ''Translational strategies for cancer prevention in liver.''; Nat Rev Cancer, 2003 PubMed Europe PMC Scholia
  8. Stewart RK, Smith GB, Donnelly PJ, Reid KR, Petsikas D, Conlan AA, Massey TE; ''Glutathione S-transferase-catalyzed conjugation of bioactivated aflatoxin B(1) in human lung: differential cellular distribution and lack of significance of the GSTM1 genetic polymorphism.''; Carcinogenesis, 1999 PubMed Europe PMC Scholia
  9. Tiemersma EW, Omer RE, Bunschoten A, van't Veer P, Kok FJ, Idris MO, Kadaru AM, Fedail SS, Kampman E; ''Role of genetic polymorphism of glutathione-S-transferase T1 and microsomal epoxide hydrolase in aflatoxin-associated hepatocellular carcinoma.''; Cancer Epidemiol Biomarkers Prev, 2001 PubMed Europe PMC Scholia
  10. Barski OA, Tipparaju SM, Bhatnagar A; ''The aldo-keto reductase superfamily and its role in drug metabolism and detoxification.''; Drug Metab Rev, 2008 PubMed Europe PMC Scholia
  11. Jin Y, Penning TM; ''Aldo-keto reductases and bioactivation/detoxication.''; Annu Rev Pharmacol Toxicol, 2007 PubMed Europe PMC Scholia


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106956view13:41, 17 September 2019MaintBotHMDB identifier normalization
69326view18:49, 8 July 2013MaintBotUpdated to 2013 gpml schema
67031view09:56, 26 June 2013Christine ChichesterOntology Term : 'aflatoxin metabolic pathway' added !
58917view04:52, 21 February 2013MaintBotUpdated Ensembl and UniProt data source
57054view15:52, 20 January 2013EgonwUsed "PubChem-compound"
53484view23:33, 7 November 2012AndraSpecify description
53483view23:30, 7 November 2012Andra
48273view23:20, 17 May 2012KhanspersUpdating PubChem xrefs
48262view21:58, 17 May 2012MaintBotAutomatic update of PubChem xrefs
41637view02:33, 2 March 2011MaintBotRemoved redundant pathway information and comments
35018view08:27, 11 February 2010ThomasModified description
34040view18:59, 9 December 2009MaintBotAutomatic update of empty xrefs
32309view13:19, 15 August 2009MaintBotFixed text labels
31898view12:45, 14 August 2009MaintBotFixed group labels
31338view20:24, 13 August 2009MaintBotFixed text labels
30985view00:54, 30 July 2009MaintBotNew pathway

External references


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NameTypeDatabase referenceComment
Aflatoxin B1 8,9-dihydrodiolMetabolite
Aflatoxin B1 C6-monoalcoholMetabolite
Aflatoxin B1 C6-monoaldehydeMetabolite
Aflatoxin B1 C8-monoalcoholMetabolite
Aflatoxin B1 C8-monoaldehydeMetabolite
Aflatoxin B1 dialdehydeMetabolite
Aflatoxin B1 exo-8,9-epoxide-GSHMetabolite5460816 (PubChem-compound)
Aflatoxin B1 exo-8,9-epoxideMetaboliteHMDB0006558 (HMDB)
Aflatoxin B1-6,8-dialcoholMetabolite
Aflatoxin M1 epoxideMetabolite
Aflatoxin M1Metabolite15558498 (PubChem-compound)
Aflatoxin Q1Metabolite104757 (PubChem-compound)
Aflatoxin-endo-B1-8,9-epoxideMetabolite53297449 (PubChem-compound)
Akr7a2GeneProductENSRNOG00000017780 (Ensembl)
Akr7a3GeneProductENSRNOG00000017899 (Ensembl)
Cyp1a2GeneProductENSRNOG00000016173 (Ensembl)
Ephx1GeneProductENSRNOG00000003515 (Ensembl)
GSTM1GeneProduct24423 (Entrez Gene)
Gstt1GeneProductENSRNOG00000001242 (Ensembl)
aflatoxin B1MetaboliteHMDB0006552 (HMDB)

Annotated Interactions

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