Fig. 2.

Mutations found in the aas gene of the 18:2- or 18:3-resistant mutant strains of Synechocystis sp. PCC 6803 (a) and 12:0-resistant mutant strains of Synechococcus sp. PCC7002 (b). Nucleotide substitutions are shown above the maps, together with the resulting amino acid substitutions. Insertions and deletions are shown below the maps. c coding region, p protein, del deletion, dup duplication, ins insertion. The sequences of the 97-base duplication (dup97; dagger) and the 9-base insertion (9ins; double dagger) are shown below the map in a