Abstract
To find out the evolutionary relationships among different tRNA sequences of 21 amino acids, 22 networks are constructed. One is constructed from whole tRNAs, and the other 21 networks are constructed from the tRNAs which carry the same amino acids. A new method is proposed such that the alignment scores of any two amino acids groups are determined by the average degree and the average clustering coefficient of their networks. The anticodon feature of isolated tRNA and the phylogenetic trees of 21 group networks are discussed. We find that some isolated tRNA sequences in 21 networks still connect with other tRNAs outside their group, which reflects the fact that those tRNAs might evolve by intercrossing among these 21 groups. We also find that most anticodons among the same cluster are only one base different in the same sites when S ≥ 70, and they stay in the same rank in the ladder of evolutionary relationships. Those observations seem to agree on that some tRNAs might mutate from the same ancestor sequences based on point mutation mechanisms.
Similar content being viewed by others
References
Barabási, A.L., Albert, R.: Emergence of scaling in random networks. Science 286, 509–511 (1999)
Watts, D.J., Strogatz, S.H.: Collective dynamics of ‘small-world’ networks. Nature 393, 440–442 (1998)
Strogatz, S.H.: Exploring complex networks. Nature 410, 268–276 (2001)
Vázquez, A., Pastor-Satorras, R., Vespignani, A.: Large-scale topological and dynamical properties of the Internet. Phys. Rev. E 65, 066130 (2002)
Albert, R., Jeong, H., Barabási, A.L.: Diameter of the world-wide web. Nature 401, 130 (1999)
Barabási, A.L., Albert, R., Jeong, H.: Scale-free characteristics of random networks: the topology of the world-wide web. Physica A 281, 69–77 (2000)
Jeong, H., Mason, S.P., Barabási, A.L., Oltvai, Z.N.: Lethality and centrality in protein networks. Nature 411, 41–42 (2001)
Goh, K., Cusick, M.E., Valle, D., Childs, B., Vidal, M., Barabási, A.L.: The human disease network. Proc. Natl. Acad. Sci. U. S. A. 104, 8685–8690 (2007)
Chen, B., Xian, Y., Wei, F.: The evolutionary network study of tRNA sequences. Acta Biophysica Sinica 25, 117 (2009). In Chinese
Wei, F., Li, S., Ma, H.: Network of tRNA gene sequences. J. Shanghai Jiaotong Univ. (Sci.) 13, 611–616 (2008)
Song, N., Joseph, J.M., Davis, G.B., Durand, D.: Sequence similarity network reveals common ancestry of multidomain proteins. Comput. Biol. 4, 1–19 (2008)
Eigen, M., Winkler-Oswatitsch, R.: Transfer-RNA: the early adaptor. Naturwissenschaften 68, 217–228 (1981)
Saks, M.E., Sampson, J.R., Abelson, J.: Evolution of a transfer RNA gene through a point mutation in the anticodon. Science 279, 1665–1667 (1998)
Rodriguez-Vargas, A.M., Fajardo, J.E., Ramirez, B.C.: Phylogeny of transfer RNA. Orig. Life 14, 547–555 (1984)
Soto, M.A., Toha, J.: Phylogenetic tree of tRNAs using a simple algorithm. Orig. Life Evol. Biosph. 20, 161–166 (1990)
Farias, S.T., Guimaraes, R.C.: Aminoacyl-tRNA synthetase classes and groups in prokaryotes. J. Theor. Biol. 250, 221–229 (2008)
Wei, F., Meng, M., Li, S., Ma, H.: Comparing two evolutionary mechanisms of modern tRNAs. Mol. Phylogenet. Evol. 38, 1–11 (2006)
Sprinzl, M., Horn, C., Brown, M., Steinberg, S.: Compilation of tRNA sequences and sequences of tRNA genes. Nucleic Acids Res. 26, 148–153 (1998)
Sprinzl, M., Vassilenko, K.S.: Compilation of tRNA sequences and sequences of tRNA genes. Nucleic Acids Res. 33, 139–140 (2005)
Jühling, F., Mörl, M., Hartmann, R.K., Sprinzl, M., Stadler, P.F., Pütz, J.: tRNAdb 2009: compilation of tRNA sequences and tRNA genes. Nucleic Acids Res. 37, 159–162 (2009)
Saitou, N., Nei, M.: The neighbor-joining method: a new method for reconstructing phylogenetic trees. Mol. Biol. Evol. 4, 406–425 (1987)
Wei, F., Li, S., Ma, H.: Computer simulation of tRNA evolution. J. Phys. A: Math. Theor. 42, 345101 (2009)
Acknowledgements
This paper was supported by Guangxi Natural Science Foundation (No. 0728003), National Natural Science Foundation of China (Nos. 10662002, 10865001), the Graduate Student Innovation Program of Guangxi Zhuang Autonomous Region (Grant No. T32070), and the 973 Program (2010CB328204).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wei, F., Chen, B. Studying the evolutionary relationships and phylogenetic trees of 21 groups of tRNA sequences based on complex networks. J Biol Phys 38, 241–250 (2012). https://doi.org/10.1007/s10867-011-9236-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10867-011-9236-6