Title

Authors

Affiliation

Department of Biophysics, Molecular Biology and Bioinformatics and Distributed Information Centre for Bioinformatics, University of Calcutta, 92, A.P. C. Road Calcutta-700009

Email

rachanabanerjee23@yahoo.co.in; *Corresponding author

Article Type

Hypothesis

Date

Received September 15, 2012; Accepted September 19, 2012; Published October 01, 2012

Shewanella species are found to dwell in various ecological niches. The widespread habitation where they live requires specific adaptations. Recent advances in genomic approaches, such as in sequencing technologies, generate huge amount of genomic data that lend support towards understanding the microbial evolution and diversity through comparative study. In this manuscript, we discuss a comparative analysis of core genes of phylogenetically related twelve members from the genus Shewanella. Phylogenetic analysis based on the core genes, differentiated two subgroups of the genus, one group comprises of species characterized as high-pressure cold-adapted while the other group is characterized as mesophilic pressure-sensitive species. By analyzing the differences of amino acid composition of these two groups, we have identified the specific trend of amino acid usage that has been adopted by the psychro-peizo-tolerant Shewanella species. The functional categories have also been recognized which are responsible for rendering the particular amino acid compositional pattern in psychropeizophilic Shewanella species facilitating their niche adaptation.

Keywords

Shewanella sp, core gene, amino acid composition, phylogenetic tree

Citation

Banerjee & Mukhopadhyay, Bioinformation 8(19): 938-942 (2012)
 

Edited by

P Kangueane

ISSN

0973-2063

Publisher

Biomedical Informatics

License

This is an Open Access article which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This is distributed under the terms of the Creative Commons Attribution License.