Figure 1.

Sequence alignment of PEPC from different sources. The protein sequences deduced from Atppc1, Atppc2, Atppc3, Atppc4, and Osppc-b genes were compared with the E. coli and Synechocystis sp. PCC 6803 enzymes using the program BioEdit sequence alignment editor (Hall, 1999). The accession numbers of these sequences are described in ”Materials and Methods.” The asterisk marks the phosphorylable Ser residue at the phosphorylation domain (underlined). Boxes I to V mark domains important for enzyme catalysis.