1HPX

HIV-1 PROTEASE COMPLEXED WITH THE INHIBITOR KNI-272


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.170 
  • R-Value Observed: 0.170 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structure of HIV-1 protease with KNI-272, a tight-binding transition-state analog containing allophenylnorstatine.

Baldwin, E.T.Bhat, T.N.Gulnik, S.Liu, B.Topol, I.A.Kiso, Y.Mimoto, T.Mitsuya, H.Erickson, J.W.

(1995) Structure 3: 581-590

  • DOI: https://doi.org/10.1016/s0969-2126(01)00192-7
  • Primary Citation of Related Structures:  
    1HPX

  • PubMed Abstract: 

    HIV-1 protease (HIV PR), an aspartic protease, cleaves Phe-Pro bonds in the Gag and Gag-Pol viral polyproteins. Substrate-based peptide mimics constitute a major class of inhibitors of HIV PR presently being developed for AIDS treatment. One such compound, KNI-272, which incorporates allophenylnorstatine (Apns)-thioproline (Thp) in place of Phe-Pro, has potent antiviral activity and is undergoing clinical trials. The structure of the enzyme-inhibitor complex should lead to an understanding of the structural basis for its tight binding properties and provide a framework for interpreting the emerging resistance to this drug.


  • Organizational Affiliation

    Frederick Biomedical Supercomputing Center, SAIC-Frederick, NCI-Frederick Cancer Research and Development Center, Maryland 21702, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HIV-1 PROTEASE
A, B
99Human immunodeficiency virus 1Mutation(s): 0 
UniProt
Find proteins for P03367 (Human immunodeficiency virus type 1 group M subtype B (isolate BRU/LAI))
Explore P03367 
Go to UniProtKB:  P03367
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03367
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
KNI
Query on KNI

Download Ideal Coordinates CCD File 
C [auth B](4R)-N-tert-butyl-3-[(2S,3S)-2-hydroxy-3-({N-[(isoquinolin-5-yloxy)acetyl]-S-methyl-L-cysteinyl}amino)-4-phenylbutanoyl]-1,3-thiazolidine-4-carboxamide
C33 H41 N5 O6 S2
NJBBLOIWMSYVCQ-VZTVMPNDSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
KNI Binding MOAD:  1HPX Ki: 5.50e-3 (nM) from 1 assay(s)
BindingDB:  1HPX Ki: min: 5.50e-3, max: 1.7 (nM) from 10 assay(s)
-TΔS: min: -8.03e+1, max: -3.09e+1 (kJ/mol) from 22 assay(s)
ΔH: min: -3.14e+1, max: 40.13 (kJ/mol) from 22 assay(s)
ΔG: min: -6.23e+1, max: -3.80e+1 (kJ/mol) from 20 assay(s)
PDBBind:  1HPX Ki: 5.50e-3 (nM) from 1 assay(s)
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 2
IDChains NameType/Class2D Diagram3D Interactions
PRD_000562 (KNI)
Query on PRD_000562
C [auth B]kynostatin 272Peptide-like / Enzyme inhibitor
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.170 
  • R-Value Observed: 0.170 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.9α = 90
b = 59.1β = 90
c = 62.3γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
MSIdata reduction
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1996-03-08
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance
  • Version 1.3: 2012-12-12
    Changes: Other
  • Version 1.4: 2024-02-07
    Changes: Data collection, Database references, Derived calculations, Other, Structure summary