Biological Assembly 1  

 3D View: Structure | Electron Density

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 7.97 kDa 
• Atom Count: 556 
• Residue Count: 70 
• Unique protein chains: 1

1AUM

HIV CAPSID C-TERMINAL DOMAIN (CAC146)

• DOI: 10.2210/pdb1AUM/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Human immunodeficiency virus 1
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 1997-08-29 Released: 1998-01-14 
• Deposition Author(s): Hill, C.P., Gamble, T.R., Yoo, S., Vajdos, F.F., Von Schwedler, U.K., Worthylake, D.K., Wang, H., Mccutcheon, J.P., Sundquist, W.I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Work: 0.355 
• R-Value Observed: 0.355 

Literature

Structure of the carboxyl-terminal dimerization domain of the HIV-1 capsid protein.

Gamble, T.R., Yoo, S., Vajdos, F.F., von Schwedler, U.K., Worthylake, D.K., Wang, H., McCutcheon, J.P., Sundquist, W.I., Hill, C.P.

(1997) Science 278: 849-853

• PubMed: 9346481 
• DOI: 10.1126/science.278.5339.849
• Primary Citation of Related Structures:  
  1AUM, 1A8O


• PubMed Abstract: 
  

The carboxyl-terminal domain, residues 146 to 231, of the human immunodeficiency virus-1 (HIV-1) capsid protein [CA(146-231)] is required for capsid dimerization and viral assembly. This domain contains a stretch of 20 residues, called the major homology region (MHR), which is conserved across retroviruses and is essential for viral assembly, maturation, and infectivity. The crystal structures of CA(146-231) and CA(151-231) reveal that the globular domain is composed of four helices and an extended amino-terminal strand. CA(146-231) dimerizes through parallel packing of helix 2 across a dyad. The MHR is distinct from the dimer interface and instead forms an intricate hydrogen-bonding network that interconnects strand 1 and helices 1 and 2. Alignment of the CA(146-231) dimer with the crystal structure of the capsid amino-terminal domain provides a model for the intact protein and extends models for assembly of the central conical core of HIV-1.

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Organizational Affiliation: 

Department of Biochemistry, University of Utah, Salt Lake City, UT 84132, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HIV CAPSID	A	70	Human immunodeficiency virus 1	Mutation(s): 0  EC: 3.4.23.16 (UniProt), 2.7.7.49 (UniProt), 2.7.7.7 (UniProt), 3.1.26.13 (UniProt), 3.1.13.2 (UniProt), 2.7.7 (UniProt), 3.1 (UniProt)
Find proteins for P12497 (Human immunodeficiency virus type 1 group M subtype B (isolate NY5)) Explore P12497  Go to UniProtKB:  P12497

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Work: 0.355 
• R-Value Observed: 0.355 
• Space Group: I 4₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 60.48	α = 90
b = 60.48	β = 90
c = 59.69	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-08-29 
• Released Date: 1998-01-14 
Deposition Author(s): Hill, C.P., Gamble, T.R., Yoo, S., Vajdos, F.F., Von Schwedler, U.K., Worthylake, D.K., Wang, H., Mccutcheon, J.P., Sundquist, W.I.

Revision History 

• Version 1.0: 1998-01-14
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance