PMID- 12857913 OWN - NLM STAT- MEDLINE DCOM- 20030819 LR - 20190508 IS - 0022-538X (Print) IS - 1098-5514 (Electronic) IS - 0022-538X (Linking) VI - 77 IP - 15 DP - 2003 Aug TI - Equine infectious anemia virus utilizes host vesicular protein sorting machinery during particle release. PG - 8440-7 AB - A final step in retrovirus assembly, particle release from the cell, is modulated by a small motif in the Gag protein known as a late domain. Recently, human immunodeficiency virus type 1 (HIV-1) and Moloney murine leukemia virus (M-MuLV) were shown to require components of the cellular vacuolar protein sorting (VPS) machinery for efficient viral release. HIV-1 interacts with the VPS pathway via an association of HIV-1 Gag with TSG101, a component of the cellular complexes involved in VPS. Equine infectious anemia virus (EIAV) is unique among enveloped viruses studied to date because it utilizes a novel motif, YPDL in Gag, as a late domain. Our analysis of EIAV assembly demonstrates that EIAV Gag release is blocked by inhibition of the VPS pathway. However, in contrast to HIV-1, EIAV Gag release is insensitive to TSG101 depletion and EIAV particles do not contain significant levels of TSG101. Finally, we demonstrate that fusing EIAV Gag directly with another cellular component of the VPS machinery, VPS28, can restore efficient release of an EIAV Gag late-domain mutant. These results provide evidence that retroviruses can interact with the cellular VPS machinery in several different ways to accomplish particle release. FAU - Tanzi, Giancarlo O AU - Tanzi GO AD - Department of Microbiology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104-6076, USA. FAU - Piefer, Andrew J AU - Piefer AJ FAU - Bates, Paul AU - Bates P LA - eng GR - T32 GM007229/GM/NIGMS NIH HHS/United States GR - T32 NS007180/NS/NINDS NIH HHS/United States GR - T32-GM07229/GM/NIGMS NIH HHS/United States GR - T32-NS07180/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Virol JT - Journal of virology JID - 0113724 RN - 0 (DNA-Binding Proteins) RN - 0 (Endosomal Sorting Complexes Required for Transport) RN - 0 (GTPase-Activating Proteins) RN - 0 (Gene Products, gag) RN - 0 (Transcription Factors) RN - 0 (Tsg101 protein) RN - 0 (VPS28 protein, human) RN - 0 (Vesicular Transport Proteins) SB - IM MH - Animals MH - Cell Line MH - DNA-Binding Proteins/genetics/metabolism MH - Endosomal Sorting Complexes Required for Transport MH - GTPase-Activating Proteins/genetics/*metabolism MH - Gene Products, gag/genetics/*metabolism MH - HeLa Cells MH - Humans MH - Infectious Anemia Virus, Equine/*physiology MH - Microscopy, Fluorescence MH - Mutation MH - Protein Transport/*physiology MH - Transcription Factors/genetics/metabolism MH - Vesicular Transport Proteins MH - Virion/*metabolism PMC - PMC165230 EDAT- 2003/07/15 05:00 MHDA- 2003/08/20 05:00 PMCR- 2003/08/01 CRDT- 2003/07/15 05:00 PHST- 2003/07/15 05:00 [pubmed] PHST- 2003/08/20 05:00 [medline] PHST- 2003/07/15 05:00 [entrez] PHST- 2003/08/01 00:00 [pmc-release] AID - 0134 [pii] AID - 10.1128/jvi.77.15.8440-8447.2003 [doi] PST - ppublish SO - J Virol. 2003 Aug;77(15):8440-7. doi: 10.1128/jvi.77.15.8440-8447.2003.