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| Content Provider | Springer Nature Link |
|---|---|
| Author | Bu, Lijing Xiao, Jian Lu, Lijun Xu, Gang Li, Jinsong Zhao, Fangqing Li, Xiaokun Wu, Jinyu |
| Copyright Year | 2009 |
| Abstract | Synechococcus and Prochlorococcus have made great contributions to earth’s photosynthetic biomass. ATP-binding cassette (ABC) protein systems have been characterized to play important roles in various physiological functions, including carbon fixation, phosphate assimilation, and vitamin B12 metabolism. In this study, the repertoire and domain architectures of ABC systems in Synechococcus and Prochlorococcus, as well as their potential evolutionary mechanism, have been surveyed extensively. Comparative analysis revealed an uneven phylogenetic distribution of the ABC systems in these organisms, and in particular that fresh-water Synechococcus strains contain more ABC systems than those of marine ones. Phylogenetic analysis indicated that lineage-specific gene expansion and duplication may be the important forces driving the variability of ABC systems in fresh-water Synechococcus and such an expansion was likely to be relevant to their ecological tolerance. At the domain level, ATP-binding domains in several ABC systems were found to fuse with many additional domains after the divergence from their common ancestor, indicating the versatile functions of ABC systems in cyanobacteria. Subsequently, 19 ABC system families were deduced to be the core set of ABC systems conserved in all marine-living Synechococcus and Prochlorococcus. In conclusion, the comprehensive survey of ABC systems in Synechococcus and Prochlorococcus provides novel insights into their potential evolutionary mechanism and the basis for further investigation of their physiological roles. |
| Starting Page | 300 |
| Ending Page | 310 |
| Page Count | 11 |
| File Format | |
| ISSN | 00222844 |
| Journal | Journal of Molecular Evolution |
| Volume Number | 69 |
| Issue Number | 4 |
| e-ISSN | 14321432 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2009-09-16 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | ATP-binding cassette (ABC) system Domain architecture Evolution mechanisms Prochlorococcus Repertoire Synechococcus Animal Genetics and Genomics Plant Genetics & Genomics Plant Sciences Microbiology Evolutionary Biology Cell Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Molecular Biology Ecology, Evolution, Behavior and Systematics |
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