Institutional Repository of Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences
| Comparative Analysis of Fatty Acid Desaturases in Cyanobacterial Genomes | |
| Chi, Xiaoyuan1,2,3; Yang, Qingli1,2,3; Zhao, Fangqing1,2; Qin, Song1; Yang, Yu1,2; Shen, Junjun1,2; Lin, Hanzhi1,2; Qin, S, Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China | |
| 2008 | |
| 发表期刊 | COMPARATIVE AND FUNCTIONAL GENOMICS
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| ISSN | 1531-6912 |
| 页码 | 284508 |
| 文章类型 | Article |
| 摘要 | Fatty acid desaturases are enzymes that introduce double bonds into the hydrocarbon chains of fatty acids. The fatty acid desaturases from 37 cyanobacterial genomes were identified and classified based upon their conserved histidine-rich motifs and phylogenetic analysis, which help to determine the amounts and distributions of desaturases in cyanobacterial species. The filamentous or N(2)-fixing cyanobacteria usually possess more types of fatty acid desaturases than that of unicellular species. The pathway of acyl-lipid desaturation for unicellular marine cyanobacteria Synechococcus and Prochlorococcus differs from that of other cyanobacteria, indicating different phylogenetic histories of the two genera from other cyanobacteria isolated from freshwater, soil, or symbiont. Strain Gloeobacter violaceus PCC 7421 was isolated from calcareous rock and lacks thylakoid membranes. The types and amounts of desaturases of this strain are distinct to those of other cyanobacteria, reflecting the earliest divergence of it from the cyanobacterial line. Three thermophilic unicellular strains, Thermosynechococcus elongatus BP-1 and two Synechococcus Yellowstone species, lack highly unsaturated fatty acids in lipids and contain only one Delta 9 desaturase in contrast with mesophilic strains, which is probably due to their thermic habitats. Thus, the amounts and types of fatty acid desaturases are various among different cyanobacterial species, which may result from the adaption to environments in evolution. Copyright (c) 2008 Xiaoyuan Chi et al.; Fatty acid desaturases are enzymes that introduce double bonds into the hydrocarbon chains of fatty acids. The fatty acid desaturases from 37 cyanobacterial genomes were identified and classified based upon their conserved histidine-rich motifs and phylogenetic analysis, which help to determine the amounts and distributions of desaturases in cyanobacterial species. The filamentous or N-2-fixing cyanobacteria usually possess more types of fatty acid desaturases than that of unicellular species. The pathway of acyl-lipid desaturation for unicellular marine cyanobacteria Synechococcus and Prochlorococcus differs from that of other cyanobacteria, indicating different phylogenetic histories of the two genera from other cyanobacteria isolated from freshwater, soil, or symbiont. Strain Gloeobacter violaceus PCC 7421 was isolated from calcareous rock and lacks thylakoid membranes. The types and amounts of desaturases of this strain are distinct to those of other cyanobacteria, reflecting the earliest divergence of it from the cyanobacterial line. Three thermophilic unicellular strains, Thermosynechococcus elongatus BP-1 and two Synechococcus Yellowstone species, lack highly unsaturated fatty acids in lipids and contain only one Delta 9 desaturase in contrast with mesophilic strains, which is probably due to their thermic habitats. Thus, the amounts and types of fatty acid desaturases are various among different cyanobacterial species, which may result from the adaption to environments in evolution. Copyright (c) 2008 Xiaoyuan Chi et al. |
| 关键词 | Acyl-lipid Desaturases Gloeobacter-violaceus Phytoplankton Biomass Marine Synechococcus Anabaena-variabilis Phase-transitions Lacks Thylakoids Prochlorococcus Growth Ocean |
| 学科领域 | Biochemistry & Molecular Biology ; Biotechnology & Applied Microbiology ; Genetics & Heredity |
| DOI | 10.1155/2008/284508 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000261570800001 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/1585 |
| 专题 | 实验海洋生物学重点实验室 |
| 通讯作者 | Qin, S, Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China 3.Shandong Peanut Res Inst, Qingdao 266100, Peoples R China |
| 第一作者单位 | 实验海洋生物学重点实验室 |
| 推荐引用方式 GB/T 7714 | Chi, Xiaoyuan,Yang, Qingli,Zhao, Fangqing,et al. Comparative Analysis of Fatty Acid Desaturases in Cyanobacterial Genomes[J]. COMPARATIVE AND FUNCTIONAL GENOMICS,2008:284508. |
| APA | Chi, Xiaoyuan.,Yang, Qingli.,Zhao, Fangqing.,Qin, Song.,Yang, Yu.,...&Qin, S, Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China.(2008).Comparative Analysis of Fatty Acid Desaturases in Cyanobacterial Genomes.COMPARATIVE AND FUNCTIONAL GENOMICS,284508. |
| MLA | Chi, Xiaoyuan,et al."Comparative Analysis of Fatty Acid Desaturases in Cyanobacterial Genomes".COMPARATIVE AND FUNCTIONAL GENOMICS (2008):284508. |
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