Büttner M, Xie D L, Nelson H, Pinther W, Hauska G, Nelson N
Universität Regensburg, Lehrstuhl für Zellbiologie und Pflanzenphysiologie, Germany.
Biochim Biophys Acta. 1992 Jul 17;1101(2):154-6.
An operon encoding the P840 reaction center of Chlorobium limicola f.sp.thiosulfatophilum has been cloned and sequenced. It contains two structural genes coding for proteins of 730 and 232 amino acids. The first protein resembles the large subunits of the Photosystem I (PS I) reaction center. Putative binding elements for the primary donor, P840 in Chlorobium and P700 in PS I and for the acceptors A(o), A(1) and FeS-center X are conserved. The second protein is related to the PS I subunit carrying the FeS-centers A and B. Since all our efforts to find a gene for a second, large subunit failed, the P840 reaction center probably is homodimeric.
编码嗜硫代硫酸盐嗜泥绿菌P840反应中心的操纵子已被克隆并测序。它包含两个结构基因，分别编码由730和232个氨基酸组成的蛋白质。第一种蛋白质类似于光合系统I（PS I）反应中心的大亚基。嗜泥绿菌中初级供体P840以及PS I中P700和受体A(o)、A(1)和铁硫中心X的推定结合元件是保守的。第二种蛋白质与携带铁硫中心A和B的PS I亚基相关。由于我们寻找第二个大亚基基因的所有努力均告失败，P840反应中心可能是同型二聚体。
