Molecular Structure, Biosynthesis and Photoreversibility of Cyanobacteriochromes
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摘要: 蓝细菌光敏色素(CBCRs)是蓝细菌中感受光的重要光受体,能够响应从紫外光到红外光范围内的光信号,进而影响蓝细菌的光化学行为。蓝细菌光敏色素通过N-末端GAF(cGMP phosphodiesterase, adenylyl cyclase and FhlA domain)结构域中保守性半胱氨酸共价结合藻胆色素,形成具有感光生理功能的色素蛋白质。本文重点在分子水平上综述了蓝细菌光敏色素的分子结构、生物合成和可逆光致变色效应机理,并基于最新的研究进展,就蓝细菌光敏色素今后的研究方向进行了展望。Abstract: Cyanobacteriochromes (CBCRs) are important photoreceptors in cyanobacteria that respond to ultraviolet to infrared light, thus affecting photochemical behavior of cyanobacteria. Via covalently binding phycobilin with conservative cysteine in GAF (cGMP phosphodiesterase, adenylyl cyclase and FhlA domain) of the N-terminal, CBCRs exhibit photosensitive biological functions. The present review summarizes the molecular structure, biosynthesis and mechanisms of photoreversibility, and prospects for future research of CBCRs based on latest research progress.
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Keywords:
- Cyanobacteriochrome /
- Phycobilin /
- GAF /
- Photoreceptor
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