Identification of a second psaC gene in the cyanobacterium Synechocystis sp. PCC6803.
The psaC gene encodes the 9 kDa protein subunit of photosystem I that carries the iron-sulfur centers FA and FB. The paper describes the sequence and transcription analysis of a second psaC gene (psaC2) from Synechocystis sp. PCC6803. ThepsaC2 gene is transcribed into an abundant monocistronic mRNA. The deduced amino acid sequence of PSI-C2 is very similar to the protein sequences from two other cyanobacteria (Synechococcus sp. PCC7002 and Nostoc sp. PCC8009). In contrast, the recently isolated psaC1 gene is not transcribed and the PSI-C1 amino acid sequence shows the highest similarity to the proteins from higher plants.
Steinmüller
K
K
Institut für Entwicklungs- und Molekularbiologie der Pflanzen, Heinrich-Heine-Universität, Düsseldorf, Germany.
D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000235:genetics*; D001483:Base Sequence; D015139:Blotting, Southern; D000458:Cyanobacteria / Q000235:genetics*; D004247:DNA / Q000235:genetics / Q000302:isolation & purification; D046911:Macromolecular Substances; D008565:Membrane Proteins; D008969:Molecular Sequence Data; D045322:Photosynthetic Reaction Center Complex Proteins / Q000235:genetics*; D045331:Photosystem I Protein Complex; D015183:Restriction Mapping; D017386:Sequence Homology, Amino Acid; D014158:Transcription, Genetic
D001426:Bacterial Proteins; D046911:Macromolecular Substances; D008565:Membrane Proteins; D045322:Photosynthetic Reaction Center Complex Proteins; D045331:Photosystem I Protein Complex; C089909:photosystem I, psaB subunit; D004247:DNA