1A9M

G48H MUTANT OF HIV-1 PROTEASE IN COMPLEX WITH A PEPTIDIC INHIBITOR U-89360E


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Work: 0.185 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of a G48H mutant of HIV-1 protease explains how glycine-48 replacements produce mutants resistant to inhibitor drugs.

Hong, L.Zhang, X.J.Foundling, S.Hartsuck, J.A.Tang, J.

(1997) FEBS Lett. 420: 11-16


  • PubMed Abstract: 
  • The crystal structure of human immunodeficiency virus type 1 (HIV-1) protease mutant G48H with peptidic inhibitor U-89360E is described. Comparison with wild-type protease-inhibitor complex shows that mutation of flap residue 48 to histidine allows s ...

    The crystal structure of human immunodeficiency virus type 1 (HIV-1) protease mutant G48H with peptidic inhibitor U-89360E is described. Comparison with wild-type protease-inhibitor complex shows that mutation of flap residue 48 to histidine allows stabilizing van der Waals contacts between the side chains of His48 and Phe53 as well as between His48 and the P2' and P3' inhibitor subsites. The flap region is less mobile than in the wild-type enzyme. A model of saquinavir-resistant mutant protease G48V in complex with saquinavir predicts interactions similar to those found in the G48H crystal. Energetic calculations confirm the similarity of the His48 and Val48 interactions.


    Organizational Affiliation

    Protein Studies Program, Oklahoma Medical Research Foundation, Oklahoma City 73104, 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 BGene Names: gag-pol
EC: 3.4.23.16, 3.1.-.-, 2.7.7.49, 2.7.7.7, 3.1.26.13, 2.7.7.-, 3.1.13.2
Find proteins for P03366 (Human immunodeficiency virus type 1 group M subtype B)
Go to UniProtKB:  P03366
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
U0E
Query on U0E

Download SDF File 
Download CCD File 
B
N-[[1-[N-ACETAMIDYL]-[1-CYCLOHEXYLMETHYL-2-HYDROXY-4-ISOPROPYL]-BUT-4-YL]-CARBONYL]-GLUTAMINYL-ARGINYL-AMIDE
C28 H52 N8 O6
XTOQWMLQBSGKOK-VUBDRERZSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
U0EKi: 119 nM BINDINGMOAD
U0EKi: 119 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Work: 0.185 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 58.500α = 90.00
b = 88.200β = 90.00
c = 94.200γ = 90.00
Software Package:
Software NamePurpose
SAINTdata reduction
X-PLORrefinement
X-PLORphasing
X-PLORmodel building
SAINTdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-06-17
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance