Figure 1.

Multiple sequence alignment of the deduced MaCCS protein and other plant CCS proteins. Identical conserved residues are shown with a black background, while similar residues are indicated with a gray background. Gaps (-) have been introduced to optimize the alignment. An asterisk (*) represents the conserved metal-binding motifs (MxCxxC and CxC). A hash sign (#) indicates the replaced residues corresponding to the histidine residues of Cu/ZnSODs. The chloroplast-targeting peptides are boxed in red. The CCS proteins of Tianbaojiao, DH-Pang, PKW, Oryza sativa, Zea mays, Arabidopsis thaliana, Glycine max, Medicago truncatula, Vitis vinifera and Picea sitchensis are abbreviated as MaCCS, DpCCS, PwCCS, OsCCS, ZmCCS, AtCCS, GmCCS, MtCCS, VvCCS and PsCCS, respectively.