Biological Assembly 1  

 3D View: Structure | Electron Density

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

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: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 84006.48 
• Atom Count: 4746 
• Residue Count: 716 
• Unique protein chains: 1

2GD5

Structural basis for budding by the ESCRTIII factor CHMP3

• DOI: 10.2210/pdb2GD5/pdb

• Classification: PROTEIN TRANSPORT
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2006-03-15 Released: 2006-06-13 
• Deposition Author(s): Muziol, T.M., Pineda-Molina, E., Ravelli, R.B., Zamborlini, A., Usami, Y., Gottlinger, H., Weissenhorn, W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.8 Å
• R-Value Free: 0.301 
• R-Value Work: 0.259 

Literature

Structural Basis for Budding by the ESCRT-III Factor CHMP3.

Pineda-Molina, E., Ravelli, R.B., Zamborlini, A., Usami, Y., Weissenhorn, W.

(2006) Dev.Cell 10: 821-830

• PubMed: 16740483 
• DOI: 10.1016/j.devcel.2006.03.013


• PubMed Abstract: 
  

The vacuolar protein sorting machinery regulates multivesicular body biogenesis and is selectively recruited by enveloped viruses to support budding. Here we report the crystal structure of the human ESCRT-III protein CHMP3 at 2.8 A resolution. The core structure of CHMP3 folds into a flat helical arrangement that assembles into a lattice, mainly via two different dimerization modes, and unilaterally exposes a highly basic surface. The C terminus, the target for Vps4-induced ESCRT disassembly, extends from the opposite side of the membrane targeting region. Mutations within the basic and dimerization regions hinder bilayer interaction in vivo and reverse the dominant-negative effect of a truncated CHMP3 fusion protein on HIV-1 budding. Thus, the final steps in the budding process may include CHMP protein polymerization and lattice formation on membranes by employing different bilayer-recognizing surfaces, a function shared by all CHMP family members.

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Organizational Affiliation: 

European Molecular Biology Laboratory, 6 rue Jules Horowitz, 38042 Grenoble, France.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Charged multivesicular body protein 3	A, B, C, D	179	Homo sapiens	Mutation(s): 0  Gene Names: CHMP3 (CGI149, NEDF, VPS24)
Find proteins for Q9Y3E7 (Homo sapiens) Go to Gene View: CHMP3 Go to UniProtKB:  Q9Y3E7

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B, C, D	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.8 Å
• R-Value Free: 0.301 
• R-Value Work: 0.259 
• Space Group: P 1

Unit Cell:

Length (Å)	Angle (°)
a = 33.580	α = 68.68
b = 72.570	β = 83.61
c = 89.230	γ = 76.70

Software Package:

Software Name	Purpose
XDS	data scaling
REFMAC	refinement
ProDC	data collection
SHELXS	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-03-15 
• Released Date: 2006-06-13 
• Deposition Author(s): Muziol, T.M., Pineda-Molina, E., Ravelli, R.B., Zamborlini, A., Usami, Y., Gottlinger, H., Weissenhorn, W.

Revision History 

• Version 1.0: 2006-06-13
  Type: Initial release
• Version 1.1: 2008-05-01
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Advisory, Version format compliance
• Version 1.3: 2017-10-18
  Type: Refinement description