3U91

Structural Determinants of Trimerization Specificity in HIV-1 gp41 Protein

• PDB DOI: https://doi.org/10.2210/pdb3U91/pdb

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


• Deposited: 2011-10-17 Released: 2013-04-24 
• Deposition Author(s): Liu, J., Lu, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free: 0.233 
• R-Value Work: 0.192 
• R-Value Observed: 0.196 

Starting Model: experimental

Literature

Structural Determinants of Trimerization Specificity in HIV-1 gp41 Protein

Liu, J., Li, Q., Dey, A.K., Moore, J.P., Lu, M.

To be published.

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: 4.53 kDa 
• Atom Count: 316 
• Modelled Residue Count: 30 
• Deposited Residue Count: 33 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Gp41	A	33	Human immunodeficiency virus 1	Mutation(s): 0  Gene Names: env
UniProt
Find proteins for Q7ZC55 (Human immunodeficiency virus type 1) Explore Q7ZC55  Go to UniProtKB:  Q7ZC55

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
JEF	B [auth A]	O-(O-(2-AMINOPROPYL)-O'-(2-METHOXYETHYL)POLYPROPYLENE GLYCOL 500) C30 H63 N O10 ICCXIDTYQFYPNV-RUMGZKRTSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free: 0.233 
• R-Value Work: 0.192 
• R-Value Observed: 0.196 
• Space Group: P 3 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 45.308	α = 90
b = 45.308	β = 90
c = 42.16	γ = 120

Software Package:

Software Name	Purpose
ADSC	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-04-24 
Deposition Author(s): Liu, J., Lu, M.

Revision History  

• Version 1.0: 2013-04-24
  Type: Initial release
  
• Version 1.1: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description