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J Virol. 2009 Oct;83(19):10305-8. doi: 10.1128/JVI.00668-09. Epub 2009 Jul 15.

Distribution of endogenous retroviruses in crocodilians.

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1
Centre for Advanced Technologies in Animal Genetics and Reproduction, Faculty of Veterinary Science, RMC Gunn Building, University of Sydney, Sydney, New South Wales 2006, Australia.

Abstract

Knowledge of endogenous retroviruses (ERVs) in crocodilians (Crocodylia) is limited, and their distribution among extant species is unclear. Here we analyzed the phylogenetic relationships of these retroelements in 20 species of crocodilians by studying the pro-pol gene. The results showed that crocodilian ERVs (CERVs) cluster into two major clades (CERV 1 and CERV 2). CERV 1 clustered as a sister group of the genus Gammaretrovirus, while CERV 2 clustered distantly with respect to all known ERVs. Interestingly, CERV 1 was found only in crocodiles (Crocodylidae). The data generated here could assist future studies aimed at identifying orthologous and paralogous ERVs among crocodilians.

PMID:
19605486
PMCID:
PMC2748012
DOI:
10.1128/JVI.00668-09
[Indexed for MEDLINE]
Free PMC Article
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