Phylogenetic analysis of the fast-evolving SuUR gene in insects

Phylogenetic analysis of the fast-evolving SuUR gene in insects Different genomic regions replicate at a different fixed time during the S phase. Late-replicating sequences are often underreplicated in the Drosophila salivary-gland polytene chromosomes. The SuUR gene, whose mutation changes the replication time of late-replicating regions in salivary-gland cells, has been identified in Drosophila melanogaster. The SUUR protein lacks homologs by a BLAST search, and only moderate similarity is observed between its N-terminal part and chromatin-remodeling proteins of the SWI2/SNF2 family. The gene and the protein were analyzed in insects. Orthologs of the SuUR gene were found in all annotated Drosophila species. The number of amino acid substitutions in the SUUR protein proved to be extremely high, corresponding to that of fast-evolving genes. Orthologs with low homology were found in mosquitoes Anopheles gambiae, Aedes aegypti, and Culex quinquefasciatus. No orthologs of the SuUR gene were detected beyond Diptera. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Phylogenetic analysis of the fast-evolving SuUR gene in insects

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2010 by Pleiades Publishing, Ltd.
Subject
Biomedicine; Microbial Genetics and Genomics; Animal Genetics and Genomics; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795410090309
Publisher site
See Article on Publisher Site

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