Regulation of cyclic peptide biosynthesis and pathogenicity in Cochliobolus carbonum by TOXEp, a novel protein with a bZIP basic DNA-binding motif and four ankyrin repeats.

Abstract excerpt

HC-toxin is an epoxide-containing cyclic tetrapeptide that is a critical virulence determinant in the pathogenic interaction between the filamentous fungus Cochliobolus carbonum and maize. HC-toxin exerts a potent cytostatic effect on plant and animal cells by inhibiting histone deacetylase. The biosynthesis of HC-toxin by C. carbonum is controlled by a complex genetic locus, TOX2, that contains multiple,...

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