>4S21_1|Chains A, B|Bacteriophytochrome (Light-regulated signal transduction histidine kinase), PhyB1|Rhodopseudomonas palustris CGA009 (258594)
MGSSHHHHHHSSGLVPRGSHMTEGSVARQPDLSTCDDEPIHIPGAIQPHGLLLALAADMTIVAGSDNLPELTGLAIGALIGRSAADVFDSETHNRLTIALAEPGAAVGAPIAVGFTMRKDAGFVGSWHRHDQLVFLELEPPQRDVAEPQAFFRRTNSAIRRLQAAETLESACAAAAQEVREITGFDRVMIYRFASDFSGEVIAEDRCAEVESYLGLHFPASDIPAQARRLYTINPVRIIPDINYRPVPVTPDLNPVTGRPIDLSFAILRSVSPVHLEYMRNIGMHGTMSISILRGERLWGLIACHHRKPNYVDLDGRQACELVAQVLAWQIGVMEEQAITRQTLKGQAIQRSLINDIEQLHDHRAGLARNSEALLELMGASGLCLHSREGVITIGQTPPGPIIDQLAQLAGRSGGSELFQTDRLSTIIPEAGAFAEVASGVLAVPLSRTPPRRVMLWFRPEVAQTVYWAGNPDKSVTAESGRLRPRTSFAAWTEQTHGRAIAWQPHEVAAAVEIRDLIIDVILRN