6tz9: Difference between revisions

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'''Unreleased structure'''


The entry 6tz9 is ON HOLD until Paper Publication
==CryoEM reconstruction of membrane-bound ESCRT-III filament composed of CHMP1B only==
 
<StructureSection load='6tz9' size='340' side='right'caption='[[6tz9]], [[Resolution|resolution]] 6.20&Aring;' scene=''>
Authors:  
== Structural highlights ==
 
<table><tr><td colspan='2'>[[6tz9]] is a 26 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6TZ9 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6TZ9 FirstGlance]. <br>
Description:  
</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6tz9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6tz9 OCA], [http://pdbe.org/6tz9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6tz9 RCSB], [http://www.ebi.ac.uk/pdbsum/6tz9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6tz9 ProSAT]</span></td></tr>
[[Category: Unreleased Structures]]
</table>
== Function ==
[[http://www.uniprot.org/uniprot/CHM1B_HUMAN CHM1B_HUMAN]] Probable peripherally associated component of the endosomal sorting required for transport complex III (ESCRT-III) which is involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs. MVBs contain intraluminal vesicles (ILVs) that are generated by invagination and scission from the limiting membrane of the endosome and mostly are delivered to lysosomes enabling degradation of membrane proteins, such as stimulated growth factor receptors, lysosomal enzymes and lipids. The MVB pathway appears to require the sequential function of ESCRT-O, -I,-II and -III complexes. ESCRT-III proteins mostly dissociate from the invaginating membrane before the ILV is released. The ESCRT machinery also functions in topologically equivalent membrane fission events, such as the terminal stages of cytokinesis and the budding of enveloped viruses (HIV-1 and other lentiviruses). ESCRT-III proteins are believed to mediate the necessary vesicle extrusion and/or membrane fission activities, possibly in conjunction with the AAA ATPase VPS4. Involved in cytokinesis. Involved in recruiting VPS4A and/or VPS4B and SPAST to the midbody of dividing cells. Involved in HIV-1 p6- and p9-dependent virus release.<ref>PMID:14519844</ref> <ref>PMID:19129479</ref>  
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Frost, A]]
[[Category: Nguyen, H C]]
[[Category: Escrt-iii]]
[[Category: Lipid binding protein]]
[[Category: Membrane remodeling]]
[[Category: Membrane-bound protein filament]]

Revision as of 09:56, 8 April 2020

CryoEM reconstruction of membrane-bound ESCRT-III filament composed of CHMP1B onlyCryoEM reconstruction of membrane-bound ESCRT-III filament composed of CHMP1B only

Structural highlights

6tz9 is a 26 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[CHM1B_HUMAN] Probable peripherally associated component of the endosomal sorting required for transport complex III (ESCRT-III) which is involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs. MVBs contain intraluminal vesicles (ILVs) that are generated by invagination and scission from the limiting membrane of the endosome and mostly are delivered to lysosomes enabling degradation of membrane proteins, such as stimulated growth factor receptors, lysosomal enzymes and lipids. The MVB pathway appears to require the sequential function of ESCRT-O, -I,-II and -III complexes. ESCRT-III proteins mostly dissociate from the invaginating membrane before the ILV is released. The ESCRT machinery also functions in topologically equivalent membrane fission events, such as the terminal stages of cytokinesis and the budding of enveloped viruses (HIV-1 and other lentiviruses). ESCRT-III proteins are believed to mediate the necessary vesicle extrusion and/or membrane fission activities, possibly in conjunction with the AAA ATPase VPS4. Involved in cytokinesis. Involved in recruiting VPS4A and/or VPS4B and SPAST to the midbody of dividing cells. Involved in HIV-1 p6- and p9-dependent virus release.[1] [2]

References

  1. ↑ Martin-Serrano J, Yarovoy A, Perez-Caballero D, Bieniasz PD. Divergent retroviral late-budding domains recruit vacuolar protein sorting factors by using alternative adaptor proteins. Proc Natl Acad Sci U S A. 2003 Oct 14;100(21):12414-9. Epub 2003 Sep 30. PMID:14519844 doi:10.1073/pnas.2133846100
  2. ↑ Bajorek M, Morita E, Skalicky JJ, Morham SG, Babst M, Sundquist WI. Biochemical analyses of human IST1 and its function in cytokinesis. Mol Biol Cell. 2009 Mar;20(5):1360-73. doi: 10.1091/mbc.E08-05-0475. Epub 2009, Jan 7. PMID:19129479 doi:http://dx.doi.org/10.1091/mbc.E08-05-0475

6tz9, resolution 6.20Å

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