Higher tRNA diversity in thermophilic bacteria: A possible adaptation to growth at high temperature |
| |
Authors: | Siddhartha Sankar Satapathy Malay Dutta Suvendra Kumar Ray |
| |
Affiliation: | 1. Department of Computer Science and Engineering, Tezpur University, Tezpur, Assam 784 028, India;2. Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur, Assam 784 028, India |
| |
Abstract: | We have done a comparative study of tRNA diversity and total tRNA genes among different strains of bacteria with respect to the optimum growth temperature of the cells. Our observation suggests that higher tRNA diversity usually occurs in thermophiles in comparison to non-thermophiles. Among psychrophiles total tRNA was observed to be more than two-fold higher than in the non-psychrophiles. Though tRNA diversity and total tRNA have recently been shown to be affected by an organism's genomic GC% and growth rate, this work is the first report on growth temperature affecting these features in bacteria. This work extends the list of molecular features undergoing adaptation due to growth temperature and supports the view that growth temperature acts as a selecting factor at the molecular level during evolution. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|