Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 42.74 kDa 
• Atom Count: 2910 
• Residue Count: 358 
• Unique protein chains: 1

2OEW

Structure of ALIX/AIP1 Bro1 Domain

• DOI: 10.2210/pdb2OEW/pdb

• Classification: PROTEIN TRANSPORT
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2007-01-01 Released: 2007-03-27 
• Deposition Author(s): Fisher, R.D., Zhai, Q., Robinson, H., Hill, C.P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.55 Å
• R-Value Free: 0.274 
• R-Value Work: 0.208 
• R-Value Observed: 0.212 

Literature

Structural and Biochemical Studies of ALIX/AIP1 and Its Role in Retrovirus Budding

Fisher, R.D., Chung, H.Y., Zhai, Q., Robinson, H., Sundquist, W.I., Hill, C.P.

(2007) Cell 128: 841-852

• PubMed: 17350572 
• DOI: 10.1016/j.cell.2007.01.035
• Primary Citation of Related Structures:  
  2OEX, 2OEW, 2OEV


• PubMed Abstract: 
  

ALIX/AIP1 functions in enveloped virus budding, endosomal protein sorting, and many other cellular processes. Retroviruses, including HIV-1, SIV, and EIAV, bind and recruit ALIX through YPX(n)L late-domain motifs (X = any residue; n = 1-3). Crystal structures reveal that human ALIX is composed of an N-terminal Bro1 domain and a central domain that is composed of two extended three-helix bundles that form elongated arms that fold back into a "V." The structures also reveal conformational flexibility in the arms that suggests that the V domain may act as a flexible hinge in response to ligand binding. YPX(n)L late domains bind in a conserved hydrophobic pocket on the second arm near the apex of the V, whereas CHMP4/ESCRT-III proteins bind a conserved hydrophobic patch on the Bro1 domain, and both interactions are required for virus budding. ALIX therefore serves as a flexible, extended scaffold that connects retroviral Gag proteins to ESCRT-III and other cellular-budding machinery.

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Organizational Affiliation: 

Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84112, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Programmed cell death 6-interacting protein	A	380	Homo sapiens	Mutation(s): 0  Gene Names: PDCD6IP, AIP1, ALIX, KIAA1375
Find proteins for Q8WUM4 (Homo sapiens) Explore Q8WUM4  Go to UniProtKB:  Q8WUM4
NIH Common Fund Data Resources
PHAROS  Q8WUM4 GTEx  ENSG00000170248

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.55 Å
• R-Value Free: 0.274 
• R-Value Work: 0.208 
• R-Value Observed: 0.212 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 120.678	α = 90
b = 63.243	β = 122.15
c = 76.384	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
CrystalClear	data collection

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2007-01-01 
• Released Date: 2007-03-27 
Deposition Author(s): Fisher, R.D., Zhai, Q., Robinson, H., Hill, C.P.

Revision History 

• Version 1.0: 2007-03-27
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-10-18
  Changes: Refinement description