Phycobilisomes linker family in cyanobacterial genomes: divergence and evolution

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	Phycobilisomes linker family in cyanobacterial genomes: divergence and evolution
	Guan, Xiangyu 1; Qin, Song 2; Zhao, Fangqing 2; Zhang, Xiaowen 2; Tang, Xuexi 1
	2007
发表期刊	INTERNATIONAL JOURNAL OF BIOLOGICAL SCIENCES
ISSN	1449-2288
卷号	3 期号:7 页码:434-445
文章类型	Article
摘要	Cyanobacteria are the oldest life form making important contributions to global CO2 fixation on the Earth. Phycobilisomes (PBSs) are the major light harvesting systems of most cyanobacteria species. Recent availability of the whole genome database of cyanobacteria provides us a global and further view on the complex structural PBSs. A PBSs linker family is crucial in structure and function of major light-harvesting PBSs complexes. Linker polypeptides are considered to have the same ancestor with other phycobiliproteins (PBPs), and might have been diverged and evolved under particularly selective forces together. In this paper, a total of 192 putative linkers including 167 putative PBSs-associated linker genes and 25 Ferredoxin-NADP oxidoreductase (FNR) genes were detected through whole genome analysis of all 25 cyanobacterial genomes (20 finished and 5 in draft state). We compared the PBSs linker family of cyanobacteria in terms of gene structure, chromosome location, conservation domain, and polymorphic variants, and discussed the features and functions of the PBSs linker family. Most of PBSs-associated linkers in PBSs linker family are assembled into gene clusters with PBPs. A phylogenetic analysis based on protein data demonstrates a possibility of six classes of the linker family in cyanobacteria. Emergence, divergence, and disappearance of PBSs linkers among cyanobacterial species were due to speciation, gene duplication, gene transfer, or gene loss, and acclimation to various environmental selective pressures especially light.; Cyanobacteria are the oldest life form making important contributions to global CO2 fixation on the Earth. Phycobilisomes (PBSs) are the major light harvesting systems of most cyanobacteria species. Recent availability of the whole genome database of cyanobacteria provides us a global and further view on the complex structural PBSs. A PBSs linker family is crucial in structure and function of major light-harvesting PBSs complexes. Linker polypeptides are considered to have the same ancestor with other phycobiliproteins (PBPs), and might have been diverged and evolved under particularly selective forces together. In this paper, a total of 192 putative linkers including 167 putative PBSs-associated linker genes and 25 Ferredoxin-NADP oxidoreductase (FNR) genes were detected through whole genome analysis of all 25 cyanobacterial genomes (20 finished and 5 in draft state). We compared the PBSs linker family of cyanobacteria in terms of gene structure, chromosome location, conservation domain, and polymorphic variants, and discussed the features and functions of the PBSs linker family. Most of PBSs-associated linkers in PBSs linker family are assembled into gene clusters with PBPs. A phylogenetic analysis based on protein data demonstrates a possibility of six classes of the linker family in cyanobacteria. Emergence, divergence, and disappearance of PBSs linkers among cyanobacterial species were due to speciation, gene duplication, gene transfer, or gene loss, and acclimation to various environmental selective pressures especially light.
关键词	Phycobilisomes Cyanobacteria Linker Polypeptides Evolution
学科领域	Biochemistry & Molecular Biology ; Biology
收录类别	SCI
语种	英语
WOS记录号	WOS:000253607600006
引用统计	被引频次：32[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/5562
专题	实验海洋生物学重点实验室
作者单位	1.Ocean Univ China, Coll Marine Life Sci, Fac Life Sci & Technol, Qingdao 266003, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Guan, Xiangyu,Qin, Song,Zhao, Fangqing,et al. Phycobilisomes linker family in cyanobacterial genomes: divergence and evolution[J]. INTERNATIONAL JOURNAL OF BIOLOGICAL SCIENCES,2007,3(7):434-445.
APA	Guan, Xiangyu,Qin, Song,Zhao, Fangqing,Zhang, Xiaowen,&Tang, Xuexi.(2007).Phycobilisomes linker family in cyanobacterial genomes: divergence and evolution.INTERNATIONAL JOURNAL OF BIOLOGICAL SCIENCES,3(7),434-445.
MLA	Guan, Xiangyu,et al."Phycobilisomes linker family in cyanobacterial genomes: divergence and evolution".INTERNATIONAL JOURNAL OF BIOLOGICAL SCIENCES 3.7(2007):434-445.

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