Biological Assembly 1  

 3D View: Structure | Electron Density

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Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

 3D View: Structure | Electron Density

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 24001.39 
• Atom Count: 1650 
• Residue Count: 204 
• Unique protein chains: 1

2J9W

Structural insight into the ESCRT-I-II link and its role in MVB trafficking

• DOI: 10.2210/pdb2J9W/pdb

• Classification: PROTEIN TRANSPORT
• Organism(s): Xenopus laevis
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2006-11-16 Released: 2007-01-23 
• Deposition Author(s): Gill, D.J., Teo, H.L., Sun, J., Perisic, O., Veprintsev, D.B., Emr, S.D., Williams, R.L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.3 Å
• R-Value Free: 0.228 
• R-Value Work: 0.200 

Literature

Structural Insight Into the Escrt-I/-II Link and its Role in Mvb Trafficking.

Gill, D.J., Teo, H., Sun, J., Perisic, O., Veprintsev, D.B., Emr, S.D., Williams, R.L.

(2007) Embo J. 26: 600

• PubMed: 17215868 
• DOI: 10.1038/sj.emboj.7601501
• Primary Citation of Related Structures:  
  2J9V, 2J9U


• PubMed Abstract: 
  

ESCRT (endosomal sorting complex required for transport) complexes orchestrate efficient sorting of ubiquitinated transmembrane receptors to lysosomes via multivesicular bodies (MVBs). Yeast ESCRT-I and ESCRT-II interact directly in vitro; however, this association is not detected in yeast cytosol. To gain understanding of the molecular mechanisms of this link, we have characterised the ESCRT-I/-II supercomplex and determined the crystal structure of its interface. The link is formed by the vacuolar protein sorting (Vps)28 C-terminus (ESCRT-I) binding with nanomolar affinity to the Vps36-NZF-N zinc-finger domain (ESCRT-II). A hydrophobic patch on the Vps28-CT four-helix bundle contacts the hydrophobic knuckles of Vps36-NZF-N. Mutation of the ESCRT-I/-II link results in a cargo-sorting defect in yeast. Interestingly, the two Vps36 NZF domains, NZF-N and NZF-C, despite having the same core fold, use distinct surfaces to bind ESCRT-I or ubiquitinated cargo. We also show that a new component of ESCRT-I, Mvb12 (YGR206W), engages ESCRT-I directly with nanomolar affinity to form a 1:1:1:1 heterotetramer. Mvb12 does not affect the affinity of ESCRT-I for ESCRT-II in vitro. Our data suggest a complex regulatory mechanism for the ESCRT-I/-II link in yeast.

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Organizational Affiliation: 

MRC Laboratory of Molecular Biology, Medical Research Council Centre, Cambridge, UK. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
VPS28-PROV PROTEIN	A, B	102	Xenopus laevis	Mutation(s): 0  Gene Names: vps28
Find proteins for Q7T0W4 (Xenopus laevis) Go to UniProtKB:  Q7T0W4

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.3 Å
• R-Value Free: 0.228 
• R-Value Work: 0.200 
• Space Group: P 1 2₁ 1

Unit Cell:

Length (Å)	Angle (°)
a = 25.997	α = 90.00
b = 89.713	β = 95.13
c = 40.384	γ = 90.00

Software Package:

Software Name	Purpose
SCALA	data scaling
REFMAC	refinement
MOSFLM	data reduction
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-11-16 
• Released Date: 2007-01-23 
• Deposition Author(s): Gill, D.J., Teo, H.L., Sun, J., Perisic, O., Veprintsev, D.B., Emr, S.D., Williams, R.L.

Revision History 

• Version 1.0: 2007-01-23
  Type: Initial release
• Version 1.1: 2011-07-13
  Type: Advisory, Version format compliance
• Version 1.2: 2018-01-24
  Type: Source and taxonomy