Fig. 3. Map of the TOX2 locus of C. carbonum. Dotted lines connect identical locations in (A) and (B). A1 is TOXA, encoding an HC-toxin efflux carrier; H1 is HTS1 encoding a 570-kDa non-ribosomal peptide synthetase; C is TOXC encoding a beta subunit of fatty acid synthase; D is TOXD encoding a putative dehydrogenase; E is TOXE encoding a pathway-specific transcription factor; F is TOXF encoding a putative branched chain amino acid aminotransferase; G is TOXG encoding an alanine racemase.

TOXA is tightly clustered with HTS1, and TOXF is tightly clustered with TOXG .

All of these genes (except probably TOXE itself) require TOXE for expression.

The map is from Ahn and Walton, 1996; and Ahn, Cheng, and Walton, 2001. 
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