PMID- 17135314 OWN - NLM STAT- MEDLINE DCOM- 20070327 LR - 20240413 IS - 0022-538X (Print) IS - 1098-5514 (Electronic) IS - 0022-538X (Linking) VI - 81 IP - 5 DP - 2007 Mar TI - The human TRIM5alpha restriction factor mediates accelerated uncoating of the N-tropic murine leukemia virus capsid. PG - 2138-48 AB - The host cell factors TRIM5alpha(hu) and Fv-1 restrict N-tropic murine leukemia virus (N-MLV) infection at an early postentry step before or after reverse transcription, respectively. Interestingly, the identity of residue 110 of the MLV capsid determines susceptibility to both TRIM5alpha(hu) and Fv-1. In this study, we investigate the fate of the MLV capsid in cells expressing either the TRIM5alpha(hu) or Fv-1 restriction factor. The expression of TRIM5alpha(hu), but not Fv-1, specifically promoted the premature conversion of particulate N-MLV capsids within infected cells to soluble capsid proteins. The TRIM5alpha(hu)-mediated disassembly of particulate N-MLV capsids was dependent upon residue 110 of the viral capsid. Furthermore, the deletion or disruption of TRIM5alpha(hu) domains necessary for potent N-MLV restriction completely abrogated the disappearance of particulate N-MLV capsids observed with wild-type TRIM5alpha(hu). These results suggest that premature disassembly of the viral capsid contributes to the restriction of N-MLV infection by TRIM5alpha(hu), but not by Fv-1. FAU - Perron, Michel J AU - Perron MJ AD - Dana-Farber Cancer Institute, 44 Binney Street, JFB 824, Boston, MA 02115, USA. FAU - Stremlau, Matthew AU - Stremlau M FAU - Lee, Mark AU - Lee M FAU - Javanbakht, Hassan AU - Javanbakht H FAU - Song, Byeongwoon AU - Song B FAU - Sodroski, Joseph AU - Sodroski J LA - eng GR - P30 AI060354/AI/NIAID NIH HHS/United States GR - R01 AI063987/AI/NIAID NIH HHS/United States GR - AI 063987/AI/NIAID NIH HHS/United States GR - AI 60354/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20061129 PL - United States TA - J Virol JT - Journal of virology JID - 0113724 RN - 0 (Antiviral Restriction Factors) RN - 0 (Carrier Proteins) RN - 0 (DNA Primers) RN - 0 (Fv1 protein, mouse) RN - 0 (Proteins) RN - 0 (Recombinant Fusion Proteins) RN - 0 (Tripartite Motif Proteins) RN - EC 2.3.2.27 (TRIM5 protein, human) RN - EC 2.3.2.27 (Ubiquitin-Protein Ligases) SB - IM MH - Amino Acid Substitution MH - Animals MH - Antiviral Restriction Factors MH - Base Sequence MH - Capsid/physiology MH - Carrier Proteins/chemistry/genetics/*physiology MH - Cell Line MH - DNA Primers/genetics MH - Humans MH - Leukemia Virus, Murine/genetics/pathogenicity/*physiology MH - Mice MH - Mutagenesis, Site-Directed MH - NIH 3T3 Cells MH - Protein Structure, Tertiary MH - Proteins/genetics/physiology MH - Recombinant Fusion Proteins/genetics/metabolism MH - Tripartite Motif Proteins MH - Ubiquitin-Protein Ligases PMC - PMC1865943 EDAT- 2006/12/01 09:00 MHDA- 2007/03/28 09:00 PMCR- 2007/07/01 CRDT- 2006/12/01 09:00 PHST- 2006/12/01 09:00 [pubmed] PHST- 2007/03/28 09:00 [medline] PHST- 2006/12/01 09:00 [entrez] PHST- 2007/07/01 00:00 [pmc-release] AID - JVI.02318-06 [pii] AID - 2318-06 [pii] AID - 10.1128/JVI.02318-06 [doi] PST - ppublish SO - J Virol. 2007 Mar;81(5):2138-48. doi: 10.1128/JVI.02318-06. Epub 2006 Nov 29.