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OALib Journal期刊
ISSN: 2333-9721
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紫色光合细菌捕获太阳能的分子机理
DOI: 10.3724/SP.J.1145.2011.00138, PP. 138-143
Keywords: 紫色光合细菌,太阳能,捕光蛋白,分子机理
Abstract:
光合作用是地球上最重要的化学反应，生物体通过它捕获太阳能，转为化学能供生长繁殖需要.光合细菌是地球上最早出现的具有原始光能合成体系的微生物，其光合反应中心是一个由多种色素分子与蛋白质以非共价键方式结合的、具有特定构象的色素－蛋白复合体－光反应中心rc（reactioncenter）和lh（lightharvesting），光能通过电荷分离及电子转移反应转化为化学能，其效率是当前人工模拟远远不能及的.本文综述了紫色光合细菌捕获太阳能的分子结构、作用机理的研究进展，并结合作者在r.sphaeroideslhii蛋白组份同源及异源基因表达方面的研究结果进行相应的分析，明确了rhodobactersphaeroides基因组中同源基因puc2ba的表达特点和功能，rhodovulumsulfidophilumpucsba与r.sphaeroidespufba能够同时在r.sphaeroides中表达，能同时形成lhii和lhi，并具有能量传递功能.图3参48
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