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. 2010 Jan 14;2(1):147–165. doi: 10.3390/v2010147

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© 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 1. — Phylogenetic relationship of retroviral proteases. Sequence alignment and the phylogenetic tree was made by ClustalW and Phylip programs, respectively. Abbreviations used: BLV, bovine leukemia virus; BFV, bovine foamy virus; EIAV, equine infectious anemia virus; EFV, equine foamy virus; FeLV, feline leukemia virus; FFV, feline foamy virus; FIV, feline immunodeficiency virus; GALV, gibbon-ape leukemia virus; HIV, human immunodeficiency virus; HTLV, human T-lymphotropic virus; HFV, human foamy virus; JSRV, jaagsiekte sheep retrovirus; MAV, myeloblastosis associated virus; MMLV, Moloney murine leukemia virus; MMTV, mouse mammary tumor virus; MPMV, Mason-Pfizer monkey virus; SIV, simian immunodeficiency virus; SFV, simian foamy virus; WDSV, walleye dermal sarcoma virus; WEHV, walleye epidermal hyperplasia virus; Proteases reviewed in this paper are in larger bold.