1HVC

CRYSTAL STRUCTURE OF A TETHERED DIMER OF HIV-1 PROTEASE COMPLEXED WITH AN INHIBITOR

• PDB DOI: https://doi.org/10.2210/pdb1HVC/pdb

• Classification: HYDROLASE(ACID PROTEASE)
• Organism(s): Human immunodeficiency virus 1
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1994-06-22 Released: 1994-10-15 
• Deposition Author(s): Bhat, T.N., Baldwin, E.T., Erickson, J.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å

Literature

Crystal structure of a tethered dimer of HIV-1 proteinase complexed with an inhibitor.

Bhat, T.N., Baldwin, E.T., Liu, B., Cheng, Y.S., Erickson, J.W.

(1994) Nat Struct Biol 1: 552-556

• PubMed: 7664084 
• DOI: https://doi.org/10.1038/nsb0894-552
• Primary Citation of Related Structures:  
  1HVC


• PubMed Abstract: 
  

  HIV-1 proteinase (HIV PR) is a dimeric enzyme composed of two identical polypeptide chains that associate with twofold symmetry. We have determined to 1.8 A the crystal structure of a covalently tethered dimer of HIV PR. The tethered dimer:inhibitor complex is identical in nearly every respect to the complex of the same inhibitor with the wild type dimeric molecule, except for the linker region. Our results suggest that the tethered dimer may be a useful surrogate enzyme for studying the effects of single site mutations on substrate and inhibitor binding as well as on enzyme asymmetry, and for simulating independent mutational drift of the two domains which has been proposed to have led to the evolution of modern day, single-chain aspartic proteinases.

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Organizational Affiliation: 

Structural Biochemistry Program, Frederick Biomedical Supercomputing Center, PRI/DynCorp, National Cancer Institute-Frederick Cancer Research and Development Center, Maryland 21702-1201, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 22.76 kDa 
• Atom Count: 1,667 
• Modelled Residue Count: 203 
• Deposited Residue Count: 203 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HIV-1 PROTEASE	A	203	Human immunodeficiency virus 1	Mutation(s): 0  Gene Names: SYNTHETIC GENE
UniProt
Find proteins for Q4VE97 (Human immunodeficiency virus 1) Explore Q4VE97  Go to UniProtKB:  Q4VE97

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
A79	B [auth A]	N-{1-BENZYL-(2S,3S)-2,3-DIHYDROXY-4-[3-METHYL-2-(3-METHYL-3-PYRIDIN-2-YLMETHYL-UREIDO)-BUTYRYLAMINO]-5-PHENYL-PENTYL}-3-METHYL-2-(3-METHYL-3-PYRIDIN-2-YLMETHYL-UREIDO)-BUTYRAMIDE C44 H58 N8 O6 QPVWMQXBTCSLCB-UNHORJANSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 52.1	α = 90
b = 59.8	β = 90
c = 62.2	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1994-10-15 
Deposition Author(s): Bhat, T.N., Baldwin, E.T., Erickson, J.W.

Revision History  

• Version 1.0: 1994-10-15
  Type: Initial release
  
• Version 1.1: 2008-03-10
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-07
  Changes: Data collection, Database references, Derived calculations, Other