Vacuolar protein sorting-associated protein

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Function

Vacuolar protein sorting-associated protein (Vps) are part of Endosomal Sorting Complex Required for Transport (ESCRT) that performs the topologically unique membrane bending and scission reaction away from the cytoplasm. This process is required for the multivesicular body pathway, cytokinesis and HIV budding. There are five distinct ESCRT complexes (0,I,II,III,Vps4) with distinct functions[1].

  • Vps4, Vps4A, Vps4B complex catalyzes the disassembly of the ESCRT-III filament in an ATP-driven reaction. Vps4 proteins are required for centrosome and spindle maintenance[2].
  • Vps9A activates Rab5 to GTP-bound form[3].
  • Vps15 may function as a G protein β subunit at the endosome [4].
  • Vps23 is part of the ESCRT-I complex
  • Vps25 is part of the ESCRT-II complex
  • Vps27 is part of the ESCRT-0 complex
  • Vps36 is part of the ESCRT-II complex


Disease

Relevance

Structural highlights

Caption for this structure

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3D structures of vacuolar protein sorting-associated protein3D structures of vacuolar protein sorting-associated protein

Updated on 10-December-2018

ReferencesReferences

  1. Schmidt O, Teis D. The ESCRT machinery. Curr Biol. 2012 Feb 21;22(4):R116-20. doi: 10.1016/j.cub.2012.01.028. PMID:22361144 doi:http://dx.doi.org/10.1016/j.cub.2012.01.028
  2. Morita E, Colf LA, Karren MA, Sandrin V, Rodesch CK, Sundquist WI. Human ESCRT-III and VPS4 proteins are required for centrosome and spindle maintenance. Proc Natl Acad Sci U S A. 2010 Jul 20;107(29):12889-94. doi:, 10.1073/pnas.1005938107. Epub 2010 Jun 29. PMID:20616062 doi:http://dx.doi.org/10.1073/pnas.1005938107
  3. Goh T, Uchida W, Arakawa S, Ito E, Dainobu T, Ebine K, Takeuchi M, Sato K, Ueda T, Nakano A. VPS9a, the common activator for two distinct types of Rab5 GTPases, is essential for the development of Arabidopsis thaliana. Plant Cell. 2007 Nov;19(11):3504-15. Epub 2007 Nov 30. PMID:18055610 doi:10.1105/tpc.107.053876
  4. Heenan EJ, Vanhooke JL, Temple BR, Betts L, Sondek JE, Dohlman HG. Structure and function of Vps15 in the endosomal G protein signaling pathway. Biochemistry. 2009 Jul 14;48(27):6390-401. PMID:19445518 doi:10.1021/bi900621w

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Michal Harel, Alexander Berchansky