In silico analysis of MGMT gene orthologous in the most ancient mammals Strepsirrhini release_2gntib4zbbbqdagrufx5m4344m

by O. V. Pidpala, L. L. Lukash

Published in Faktori eksperimentalʹnoï evolûcìï organìzmìv by Institute of Molecular Biology and Genetics (NAS Ukraine).

2020   Volume 26, p305-310

Abstract

Aim. To analyze the evolution of the MGMT gene with using the example of primitive primates with an emphasis on the participation of mobile genetic elements (MGE) in this process. Methods. The homology between nucleotide sequences was determined by BLAST 2.6.1. The results of the search and identification of MGE were performed using the CENSOR program. Results. It was shown on the the example of variable exons, that non-coding sequences can play a coding role at various stages of gene evolution. In the case of the P.coquereli MGMT gene, it was found that exon sequences could be a source of an additional microintron. Based on a comparison of the sequences of Strepsirrhini primates and H.sapience, it can be assumed that fragmented sequences of the endogenous retrovirus HERV-Fc1 could participate in the formation of the coding region of human exon 5 and 3'UTR. Conclusions. The evolutionary changes in the MGMT gene occur at the level of various structural units (exons and introns), and the MGE can be not only components of introns, but also components of exons in the form of fragmented sequences which could not be identified as mobile genetic elements.
 Keywords: Strepsirrhini, MGMT gene, MGE, HERV-Fc1.
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Date   2020-09-01
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