Abstract：
:HIV release requires TSG101, a cellular factor that sorts proteins into vesicles that bud into multivesicular bodies (MVB). To test whether other proteins involved in MVB biogenesis (the class E proteins) also participate in HIV release, we identified 22 candidate human class E proteins. These proteins were connected into a coherent network by 43 different protein-protein interactions, with AIP1 playing a key role in linking complexes that act early (TSG101/ESCRT-I) and late (CHMP4/ESCRT-III) in the pathway. AIP1 also binds the HIV-1 p6(Gag) and EIAV p9(Gag) proteins, indicating that it can function directly in virus budding. Human class E proteins were found in HIV-1 particles, and dominant-negative mutants of late-acting human class E proteins arrested HIV-1 budding through plasmal and endosomal membranes. These studies define a protein network required for human MVB biogenesis and indicate that the entire network participates in the release of HIV and probably many other viruses.
journal_name
Celljournal_title
Cellauthors
von Schwedler UK,Stuchell M,Müller B,Ward DM,Chung HY,Morita E,Wang HE,Davis T,He GP,Cimbora DM,Scott A,Kräusslich HG,Kaplan J,Morham SG,Sundquist WIdoi
10.1016/s0092-8674(03)00714-1subject
Has Abstractpub_date
2003-09-19 00:00:00pages
701-13issue
6eissn
0092-8674issn
1097-4172pii
S0092867403007141journal_volume
114pub_type
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