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Aminoacyl-tRNA synthetase classes and groups in prokaryotes


, : Aminoacyl-tRNA synthetase classes and groups in prokaryotes. Journal of Theoretical Biology 250(2): 221-229

Knowledge on the evolution of aminoacyl-tRNA synthetases is crucial to studies on the origins of life. The relationships between the different aminoacyl-tRNA synthetase specificities in prokaryotic organisms are studied in this work. We reconstructed the ancestor sequences and the phylogenetic relationships utilizing the Maximum Likelihood method. The results suggest that in class I the evolution of the N-terminal segment was strongly influenced by the amino acid hydropathy in both domains of prokaryotes. The results for the C-terminal segments of class I were different in the two domains, indicating that its evolution was strongly influenced by the specific types of tRNA modification in each domain. The class II groups in Archaea were more heterogeneous with respect to the hydropathy of amino acids, indicating the interference of other influences. In bacteria, the configuration was also complex but the overall consensual division in two groups was maintained, group IIa forming a single branch with the five hydroapathetic amino acid specificities and group IIb containing the specificities for the moderately hydrophobic together with the hydrophilic amino acids. It is indicated that the aminoacyl-tRNA synthetase in both domains were subjected to different selective forces in diverse parts of the proteins, resulting in complex phylogenetic patterns.

US$19.90

PMID: 17983631

DOI: 10.1016/j.jtbi.2007.09.025


Other references

Gaskell, C.; Leedale, A.; Douglas, S., 1975: Pansteatitis in the cat: a report of four cases. Journal of small animal practice: 16 (2) 117-121

Luo, Q.; Li, Y.; Wang, W.; Fei, X.; Deng, X., 2015: Correction: Genome-Wide Survey and Expression Analysis of Chlamydomonas reinhardtii U-box E3 Ubiquitin Ligases (CrPUBs) Reveal a Functional Lipid Metabolism Module. Plos One 10(11): E0142996-E0142996

Black, W.; Hall Steele, G.; Ruff, S., 1993: A microparticle enzyme immunoassay for the detection of antibodies to HIV-1 and HIV-2 on a random/continuous access immunoassay analyzer. IXTH INTERNATIONAL CONFERENCE ON AIDS AND THE IVTH STD WORLD CONGRESS [Author] IXth International Conference on AIDS in affiliation with the IVth STD World Congress : 544

Yang, H-Lin.; Wang, G-Lin.; Niu, G-Qi.; Meng, B.; Chen, L.; Zheng, Z-Min.; Tang, T-Si., 2008: Determination of painful vertebrae treated by kyphoplasty in multiple-level vertebral compression fractures. To explore how to determine painful vertebrae treated by kyphoplasty in multiple-level osteoporotic vertebral compression fractures and clinical outcome. From October 2002 to June 2005, 51 consecutive procedures with kyphoplasty were performed on...

Anonymous, 2006: HMOs--copayments. Lefler v. United Healthcare of Utah, Inc. Benefits Quarterly 22(1): 53-55

Wirth Karl R.; Adelsberger Katherine A., 2002: Mantle source and magmatic evolution of the late Pliocene Ogol Lava Beds of Laetoli, Tanzania. Lava flows and several small cones are exposed in a 50 square kilometer region that includes the Laetoli Archeological Site in northern Tanzania. The flows are of interest to archeological studies because of their potential as a source for stone t...

Montague, T., 2010: Modern treatment of some communicable diseases. Northern New York Medical Journal 3: 12-12

Prinzmetal, M.; Ornitz, E.M., 1948: Arterio-venous anastomoses in liver, spleen, and lungs. American Journal of Physiology 152(1): 48-52

Grillo M.A.; Bedino S., 1968: Enz ornithine carbamyl transferase of bovine liver. Enzymologia 35(1): 1-10

Hong Jian Ming, H.Q.ng Ni; Qiu Z.S.eng; Liu Xiang Lin; Yin L.P.ng; Chai Xiao Qing, 1995: Studies on nitrate reductase in plasma membrane of maize roots. Nitrate reductase (NR) activity was identified in the right-side-out and inside-out of high purity plasma membrane (PM) vesicles in maize (Zea mays L.) roots which was obtained by aqueous two-phase partitioning. The inducement property of the NR a...