This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

2caz

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Current revision

ESCRT-I core

Structural highlights

2caz is a 6 chain structure with sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 3.6Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

STP22_YEAST Component of the ESCRT-I complex, a regulator of vesicular trafficking process. Binds to ubiquitinated cargo proteins and is required for the sorting of endocytic ubiquitinated cargos into multivesicular bodies (MVBs). Mediates the association to the ESCRT-0 complex. Required for vacuolar targeting of temperature-sensitive plasma membrane proteins STE2 and CAN1.^[1] ^[2] ^[3]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

ESCRT complexes form the main machinery driving protein sorting from endosomes to lysosomes. Currently, the picture regarding assembly of ESCRTs on endosomes is incomplete. The structure of the conserved heterotrimeric ESCRT-I core presented here shows a fan-like arrangement of three helical hairpins, each corresponding to a different subunit. Vps23/Tsg101 is the central hairpin sandwiched between the other subunits, explaining the critical role of its "steadiness box" in the stability of ESCRT-I. We show that yeast ESCRT-I links directly to ESCRT-II, through a tight interaction of Vps28 (ESCRT-I) with the yeast-specific zinc-finger insertion within the GLUE domain of Vps36 (ESCRT-II). The crystal structure of the GLUE domain missing this insertion reveals it is a split PH domain, with a noncanonical lipid binding pocket that binds PtdIns3P. The simultaneous and reinforcing interactions of ESCRT-II GLUE domain with membranes, ESCRT-I, and ubiquitin are critical for ubiquitinated cargo progression from early to late endosomes.

ESCRT-I core and ESCRT-II GLUE domain structures reveal role for GLUE in linking to ESCRT-I and membranes.,Teo H, Gill DJ, Sun J, Perisic O, Veprintsev DB, Vallis Y, Emr SD, Williams RL Cell. 2006 Apr 7;125(1):99-111. PMID:16615893^[4]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Li Y, Kane T, Tipper C, Spatrick P, Jenness DD. Yeast mutants affecting possible quality control of plasma membrane proteins. Mol Cell Biol. 1999 May;19(5):3588-99. PMID:10207082
↑ Babst M, Odorizzi G, Estepa EJ, Emr SD. Mammalian tumor susceptibility gene 101 (TSG101) and the yeast homologue, Vps23p, both function in late endosomal trafficking. Traffic. 2000 Mar;1(3):248-58. PMID:11208108
↑ Katzmann DJ, Babst M, Emr SD. Ubiquitin-dependent sorting into the multivesicular body pathway requires the function of a conserved endosomal protein sorting complex, ESCRT-I. Cell. 2001 Jul 27;106(2):145-55. PMID:11511343
↑ Teo H, Gill DJ, Sun J, Perisic O, Veprintsev DB, Vallis Y, Emr SD, Williams RL. ESCRT-I core and ESCRT-II GLUE domain structures reveal role for GLUE in linking to ESCRT-I and membranes. Cell. 2006 Apr 7;125(1):99-111. PMID:16615893 doi:10.1016/j.cell.2006.01.047

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2caz"

@@ Line 1: / Line 1: @@
-==ESCRT-I CORE==
-<StructureSection load='2caz' size='340' side='right' caption='[[2caz]], [[Resolution|resolution]] 3.60&Aring;' scene=''>
+==ESCRT-I core==
+<StructureSection load='2caz' size='340' side='right'caption='[[2caz]], [[Resolution|resolution]] 3.60&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2caz]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CAZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2CAZ FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2caz]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CAZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2CAZ FirstGlance]. <br>
-</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1uzx|1uzx]]</td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.6&#8491;</td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2caz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2caz OCA], [http://pdbe.org/2caz PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2caz RCSB], [http://www.ebi.ac.uk/pdbsum/2caz PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2caz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2caz OCA], [https://pdbe.org/2caz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2caz RCSB], [https://www.ebi.ac.uk/pdbsum/2caz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2caz ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/SRN2_YEAST SRN2_YEAST]] Component of the ESCRT-I complex, a regulator of vesicular trafficking process. Required for normal endocytic and biosynthetic traffic to the yeast vacuole. [[http://www.uniprot.org/uniprot/VPS28_YEAST VPS28_YEAST]] Component of the ESCRT-I complex, a regulator of vesicular trafficking process. Required for normal endocytic and biosynthetic traffic to the yeast vacuole.
+[https://www.uniprot.org/uniprot/STP22_YEAST STP22_YEAST] Component of the ESCRT-I complex, a regulator of vesicular trafficking process. Binds to ubiquitinated cargo proteins and is required for the sorting of endocytic ubiquitinated cargos into multivesicular bodies (MVBs). Mediates the association to the ESCRT-0 complex. Required for vacuolar targeting of temperature-sensitive plasma membrane proteins STE2 and CAN1.<ref>PMID:10207082</ref> <ref>PMID:11208108</ref> <ref>PMID:11511343</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ca/2caz_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ca/2caz_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
   </jmolCheckbox>
-</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
+</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2caz ConSurf].
 <div style="clear:both"></div>
 <div style="background-color:#fffaf0;">
@@ Line 27: / Line 28: @@
 </div>
 <div class="pdbe-citations 2caz" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Vacuolar protein sorting-associated protein 3D structures|Vacuolar protein sorting-associated protein 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Atcc 18824]]
+[[Category: Large Structures]]
-[[Category: Emr, S D]]
+[[Category: Saccharomyces cerevisiae]]
-[[Category: Gill, D J]]
+[[Category: Emr SD]]
-[[Category: Perisic, O]]
+[[Category: Gill DJ]]
-[[Category: Sun, J]]
+[[Category: Perisic O]]
-[[Category: Teo, H]]
+[[Category: Sun J]]
-[[Category: Vallis, Y]]
+[[Category: Teo H]]
-[[Category: Veprintsev, D B]]
+[[Category: Vallis Y]]
-[[Category: Williams, R L]]
+[[Category: Veprintsev DB]]
-[[Category: Endosome]]
+[[Category: Williams RL]]
-[[Category: Escrt]]
-[[Category: Lysosome]]
-[[Category: Multivesicular body]]
-[[Category: Mvb]]
-[[Category: Ph domain]]
-[[Category: Phosphoinositide]]
-[[Category: Protein sorting]]
-[[Category: Protein transport]]
-[[Category: Ptdins3p]]
-[[Category: Ubiquitin]]
-[[Category: Ubl conjugation pathway]]
-[[Category: Vesicle trafficking]]
-[[Category: Vps23]]
-[[Category: Vps28]]
-[[Category: Vps36]]
-[[Category: Vps37]]

2caz

From Proteopedia

Current revision

ESCRT-I core

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox