Sequence alignment of NdhP of Synechocystis 6803 and its homologues from other species. The sequence of the NdhP from Synechocystis sp. PCC 6803 (Syn6803) was compared with homologous sequences from M. aeruginosa NIES-843 (Micro); Cyanothece sp. ATCC 51142 (Cyn51142); T. erythraeum IMS101 (Tri101); Synechococcus sp. PCC 7002 (Syn7002); A. platensis NIES-39 (Art39); S. elongatus PCC 7942 (Syn7942); T. elongatus BP-1 (Thermo); G. violaceus PCC 7421 (Gloeo); P. marinus MIT 9211 (Pro9211); P. marinus SS120 (Pro120); P. marinus NATLIA (ProNATLIA); P. marinus MIT 9215 (Pro9215); P. marinus MIT 9312 (Pro9312); R. communis (Ricinus); V. vinifera (Vitis); A. thaliana (Ara); S. bicolor (Sorghum), O. sativa (Ory). and H. vulgare (Hordeum). Membrane domain analysis was performed by the TMHMM software, and N-terminal extension (N), single transmembrane helix (TM), and C-terminal tail (C) were signed, respectively. The sequences were aligned using ClustalX 1.83. Asterisks indicate identical amino acids; colons and dots indicate conserved amino acid substitutions.