3WFV

HIV-1 CRF07 gp41

• PDB DOI: https://doi.org/10.2210/pdb3WFV/pdb

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


• Deposited: 2013-07-24 Released: 2013-10-16 
• Deposition Author(s): Du, J., Xue, H., Ma, J., Liu, F., Zhou, J., Shao, Y., Qiao, W., Liu, X.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 
  0.258 (Depositor), 0.250 (DCC) 
• R-Value Work: 
  0.220 (Depositor), 0.220 (DCC) 
• R-Value Observed: 
  0.222 (Depositor) 

Literature

The crystal structure of HIV CRF07 B'/C gp41 reveals a hyper-mutant site in the middle of HR2 heptad repeat

Du, J., Xue, H., Ma, J., Liu, F., Zhou, J., Shao, Y., Qiao, W., Liu, X.

(2013) Virology 446: 86-94

• PubMed: 24074570 
• DOI: https://doi.org/10.1016/j.virol.2013.07.024
• Primary Citation of Related Structures:  
  3WFV


• PubMed Abstract: 
  

  HIV CRF07 B'/C is a strain circulating mainly in northwest region of China. The gp41 region of CRF07 is derived from a clade C virus. In order to compare the difference of CRF07 gp41 with that of typical clade B virus, we solved the crystal structure of the core region of CRF07 gp41. Compared with clade B gp41, CRF07 gp41 evolved more basic and hydrophilic residues on its helix bundle surface. Based on sequence alignment, a hyper-mutant cluster located in the middle of HR2 heptads repeat was identified. The mutational study of these residues revealed that this site is important in HIV mediated cell-cell fusion and plays critical roles in conformational changes during viral invasion.

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Organizational Affiliation: 

State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

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

Macromolecule Content

• Total Structure Weight: 9.75 kDa 
• Atom Count: 715 
• Modelled Residue Count: 86 
• Deposited Residue Count: 86 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Envelope glycoprotein gp160	A	86	Human immunodeficiency virus 1	Mutation(s): 0  Gene Names: env
UniProt
Find proteins for Q994K2 (Human immunodeficiency virus type 1) Explore Q994K2  Go to UniProtKB:  Q994K2

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free:  0.258 (Depositor), 0.250 (DCC) 
• R-Value Work:  0.220 (Depositor), 0.220 (DCC) 
• R-Value Observed: 0.222 (Depositor) 

Space Group: H 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 46.92	α = 90
b = 46.92	β = 90
c = 185.051	γ = 120

Software Package:

Software Name	Purpose
HKL-2000	data collection
PHASES	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-10-16 
Deposition Author(s): Du, J., Xue, H., Ma, J., Liu, F., Zhou, J., Shao, Y., Qiao, W., Liu, X.

Revision History  

• Version 1.0: 2013-10-16
  Type: Initial release
  
• Version 1.1: 2017-08-16
  Changes: Refinement description, Source and taxonomy
• Version 1.2: 2024-03-20
  Changes: Data collection, Database references