Fig. 3. Deletion analysis of MCP. Top line shows a diagram of the wild-type MCP element, with the location of the five PHO consensus sites (circles) and the two putative GAF binding sites (squares) indicated. The deletion constructs MCP12, MCP14, MCP1, MCP2 and MCP7 are shown. The deleted portions are denoted by parentheses and the extent of the deletions are indicated by the nucleotide numbers. MCP7* has mutations in the two putative GAF binding sites, indicated by Xs. In the adjacent table, three columns are shown: ‘# lines’ are the total number of independent transformant lines examined for lacZ expression; ‘silenced’ is the number of lines in which silencing is correctly maintained in the wing disc and the anterior compartment of the haltere disc; ‘derepressed’ is the number of lines in which lacZ is derepressed in the wing or haltere discs.