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| Content Provider | Springer Nature Link |
|---|---|
| Author | Udaya Prakash, N. A. Jayanthi, M. Sabarinathan, R. Kangueane, P. Mathew, Lazar Sekar, K. |
| Copyright Year | 2010 |
| Abstract | The discovery of GH (Glycoside Hydrolase) 19 chitinases in Streptomyces sp. raises the possibility of the presence of these proteins in other bacterial species, since they were initially thought to be confined to higher plants. The present study mainly concentrates on the phylogenetic distribution and homology conservation in GH19 family chitinases. Extensive database searches are performed to identify the presence of GH19 family chitinases in the three major super kingdoms of life. Multiple sequence alignment of all the identified GH19 chitinase family members resulted in the identification of globally conserved residues. We further identified conserved sequence motifs across the major sub groups within the family. Estimation of evolutionary distance between the various bacterial and plant chitinases are carried out to better understand the pattern of evolution. Our study also supports the horizontal gene transfer theory, which states that GH19 chitinase genes are transferred from higher plants to bacteria. Further, the present study sheds light on the phylogenetic distribution and identifies unique sequence signatures that define GH19 chitinase family of proteins. The identified motifs could be used as markers to delineate uncharacterized GH19 family chitinases. The estimation of evolutionary distance between chitinase identified in plants and bacteria shows that the flowering plants are more related to chitinase in actinobacteria than that of identified in purple bacteria. We propose a model to elucidate the natural history of GH19 family chitinases. |
| Starting Page | 466 |
| Ending Page | 478 |
| Page Count | 13 |
| File Format | |
| ISSN | 00222844 |
| Journal | Journal of Molecular Evolution |
| Volume Number | 70 |
| Issue Number | 5 |
| e-ISSN | 14321432 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2010-05-18 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Phylogenetic analysis GH19 family chitinases Multiple sequence alignment Evolutionary distance 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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