In2006, Zhao and his colleagues have found a bilin lyase gene cpeS (named asalr0617) in Anabaena sp. PCC7120which can encode bilin lyase CpeS catalyzephycocyanobilin (PCB) attach to the site cysteine-84of β-subunits of phycocyanin orphycoerythrin. Though homology analyzes by software, we have found gene slr2049inSynechocystis sp. PCC6803is parallel and highly homology to gene cpeS. Ourpreliminary study of gene slr2049confirmed the protein Slr2049has similar functionwith protein CpeS, is a bilin lyase.
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