Abstract
Within the photosynthetic gene cluster of Rhodobacter sphaeroides the genes encoding light-harvesting LHI and reaction-centre complexes are transcriptionally linked in the order pufBALMX. The region stretching 1.6 kb upstream of pufB has been examined by DNA sequencing and by complementation/deletion analysis. These studies demonstrate that three open reading frames are located upstream of pufB. One open reading frame, designated bchA, terminates just inside pufQ, which is located proximal to pufB. BchA contains a 37 bp region that functions as the oxygen-regulated promoter for pufQ, and probably for the puf operon as a whole. We also demonstrate that the protein encoded by pufQ appears to play a role in bacteriochlorophyll biosynthesis.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
