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The chemical reactions and pathways resulting in the formation of aflatoxin, a fungal metabolite found as a contaminant in moldy grains that induces liver cancer. Aflatoxin induces a G to T transversion at codon 249 of p53, leading to its inactivation. Aflatoxin is converted to a chemical carcinogen by P450. [ISBN:0716731363, ISBN:0815316194, PMID:15006741]
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