1HPX

HIV-1 PROTEASE COMPLEXED WITH THE INHIBITOR KNI-272


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.3 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


  • 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 com ...

    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.


    Related Citations: 
    • Structure-Based Inhibitors of HIV-1 Protease
      Wlodawer, A.,Erickson, J.W.
      (1993) Annu.Rev.Biochem. 62: 543
    • 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.E.,Erickson, J.W.
      (1994) Nat.Struct.Mol.Biol. 1: 552


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HIV-1 PROTEASE
A, B
99Human immunodeficiency virus type 1 group M subtype BMutation(s): 0 
Gene Names: gag-pol
Find proteins for P03367 (Human immunodeficiency virus type 1 group M subtype B)
Go to UniProtKB:  P03367
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
KNI
Query on KNI

Download SDF File 
Download CCD File 
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
KNI-272, (N-TERT-BUTYL-THIOPROLINE)-(5-ISOQUINOLYLOXYACETYL-METHYLTHIOALANINE)-ALLOPHENYLNORSTATINE
C33 H41 N5 O6 S2
NJBBLOIWMSYVCQ-VZTVMPNDSA-N
 Ligand Interaction
Biologically Interesting Molecules 1 Unique
IDChainsNameType/Class2D Diagram3D Interactions
PRD_000562 (KNI)
Query on PRD_000562
Bkynostatin 272Peptide-like / Enzyme inhibitor

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External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
KNIKi: 0.0055 nM BINDINGMOAD
KNIKi: 0.0055 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.170 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 51.900α = 90.00
b = 59.100β = 90.00
c = 62.300γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
MSIdata reduction
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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