title: Organization and transcription of the class I phycoerythrin genes of the marine cyanobacterium Synechococcus sp. WH7803.
abstract: The nucleotide sequences of the class I phycoerythrin (PE) alpha- and beta-subunit genes (cpeA and cpeB) from the marine cyanobacterium Synechococcus sp. WH7803 are reported. The cpeB gene is located upstream of cpeA with a separation of 56 nucleotides and the two genes are co-transcribed as a transcript of 1.3 kb, with the transcription startpoint being localized to 110-111 bp upstream of cpeB. The sequence of the promoter region bears no similarity to promoters reported for other cyanobacterial PE genes. Pentanucleotide repeats found upstream of some PE operons, particularly in the case of cyanobacterial strains capable of chromatic adaption, are not found in Synechococcus sp. WH7803; instead the sequence 5'-CGGTT-3' is repeated three times in the promoter region.
authors.affiliation: Department of Biological Sciences, University of Warwick, Coventry, UK.
authors.forename: J
authors.initials: J
authors.lastname: Newman
authors.forename: N H
authors.initials: NH
authors.lastname: Mann
authors.forename: N G
authors.initials: NG
authors.lastname: Carr
mesh_terms: D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000235:genetics*; D001483:Base Sequence; D003001:Cloning, Molecular; D000458:Cyanobacteria / Q000737:chemistry / Q000235:genetics*; D005798:Genes, Bacterial / Q000235:genetics*; D008969:Molecular Sequence Data; D009876:Operon / Q000235:genetics; D010799:Phycoerythrin / Q000737:chemistry / Q000235:genetics*; D011401:Promoter Regions, Genetic / Q000235:genetics; D012329:RNA, Bacterial / Q000032:analysis; D012091:Repetitive Sequences, Nucleic Acid / Q000235:genetics; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D014158:Transcription, Genetic
chemical_list: D001426:Bacterial Proteins; D012329:RNA, Bacterial; C086764:cpeA protein, Synechococcus; C086765:cpeB protein, Synechococcus; D010799:Phycoerythrin