Figure 1.

Structure of wheat plastid ACCase cDNA and 5′-end fragments of its genes. Functional domains were identified by sequence comparison as described in ref. 4. BC, biotin carboxylase; BCC, biotin carboxyl carrier; CT, carboxyltransferase; cDNA pcw, coding sequence of plastid ACCase from wheat. Probe ucg1, further defined in Materials and Methods and corresponding to the genetic marker Xucg1, was used in library screening and chromosome mapping. GenBank accession numbers: pcw, AF029895; Acc-1,1, AF029897; Acc-1,2, AF029896; Wis2, X05995, X57168; pTa2, X06952; Itr1, X65875; and BARE1, Z17327.