FIG. 2.

Alignment of the novel putative phycoerythrin II linkers deduced from the sequences of the SYNW2000 and SYNW1989 genes from Synechococcus sp. strain WH8102 with MpeC homologs from the same organism (deduced from SYNW2010) and from the marine Synechococcus sp. strain WH8020 (Q02181) and with CpeD homologs from F. diplosiphon (P18543) (Fdi) and G. violaceus (Glr1264, retrieved from Cyanobase) (Gvi). Identical residues in at least two aligned sequences are indicated in white type on a black background. Gray blocks are conservative substitutions within amino acid groups with similar properties: ILV, FWY, AGS, ST, DE, DN, KR, and EQ. Cysteinyl residues conserved in at least three sequences are indicated with an asterisk.