3AO1

Fragment-based approach to the design of ligands targeting a novel site in HIV-1 integrase

• PDB DOI: https://doi.org/10.2210/pdb3AO1/pdb

• Classification: VIRAL PROTEIN/TRANSFERASE INHIBITOR
• Organism(s): Human immunodeficiency virus 1
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2010-09-17 Released: 2011-03-09 
• Deposition Author(s): Wielens, J., Parker, M.W., Chalmers, D.K., Scanlon, M.J.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.268 
• R-Value Work: 0.216 
• R-Value Observed: 0.219 

Starting Model: experimental

Literature

Fragment-based design of ligands targeting a novel site on the integrase enzyme of human immunodeficiency virus 1

Wielens, J., Headey, S.J., Deadman, J.J., Rhodes, D.I., Parker, M.W., Chalmers, D.K., Scanlon, M.J.

(2011) ChemMedChem 6: 258-261

• PubMed: 21275048 
• DOI: https://doi.org/10.1002/cmdc.201000483
• Primary Citation of Related Structures:  
  3AO1, 3AO2, 3AO3, 3AO4, 3AO5, 3OVN

---

Organizational Affiliation: 

Medicinal Chemistry and Drug Action, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville 3052, Australia.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 36.56 kDa 
• Atom Count: 2,270 
• Modelled Residue Count: 283 
• Deposited Residue Count: 326 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
POL polyprotein	A, B	163	Human immunodeficiency virus 1	Mutation(s): 4  Gene Names: pol
UniProt
Find proteins for Q72498 (Human immunodeficiency virus 1) Explore Q72498  Go to UniProtKB:  Q72498

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BZX	F [auth A], G [auth A], J [auth B]	1,3-benzodioxol-5-ol C7 H6 O3 LUSZGTFNYDARNI-UHFFFAOYSA-N
CD	C [auth A], D [auth A], H [auth B], I [auth B]	CADMIUM ION Cd WLZRMCYVCSSEQC-UHFFFAOYSA-N
SO4	E [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Binding Affinity Annotations
ID	Source	Binding Affinity
BZX	PDBBind:  3AO1	Kd: 5.50e+6 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.268 
• R-Value Work: 0.216 
• R-Value Observed: 0.219 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 60.587	α = 90
b = 61.997	β = 90
c = 81.765	γ = 90

Software Package:

Software Name	Purpose
Blu-Ice	data collection
AMoRE	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-03-09 
Deposition Author(s): Wielens, J., Parker, M.W., Chalmers, D.K., Scanlon, M.J.

Revision History  

• Version 1.0: 2011-03-09
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2023-11-01
  Changes: Data collection, Database references, Derived calculations, Refinement description