8CI7

Apo-crystal structure of a wild-type South African HIV-1 subtype C protease at 2.4 angstrom

• PDB DOI: https://doi.org/10.2210/pdb8CI7/pdb

• Classification: HYDROLASE
• Organism(s): Human immunodeficiency virus 1
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2023-02-09 Released: 2023-04-12 
• Deposition Author(s): Dlamini, N.P., Pandian, R., Onisuru, O., Achilonu, I.A., Sayed, Y.
• Funding Organization(s): National Research Foundation in South Africa, Science and Technology Funding Council

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.221 
• R-Value Work: 0.203 
• R-Value Observed: 0.206 

Re-refinement Note

This entry reflects an alternative modeling of the original data in: 3U71

Literature

Biophysical and biochemical characterization of a wild-type South African HIV-1 subtype C protease

Dlamini, N.P., Pandian, R., Onisuru, O., Achilonu, I.A., Sayed, Y.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: homology

Macromolecule Content

• Total Structure Weight: 10.77 kDa 
• Atom Count: 828 
• Modelled Residue Count: 99 
• Deposited Residue Count: 99 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Truncated pol polyprotein	A	99	Human immunodeficiency virus 1	Mutation(s): 0  Gene Names: pol
UniProt
Find proteins for Q994Q3 (Human immunodeficiency virus 1) Explore Q994Q3  Go to UniProtKB:  Q994Q3

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.221 
• R-Value Work: 0.203 
• R-Value Observed: 0.206 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 46.6	α = 90
b = 46.6	β = 90
c = 102.144	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PHENIX	refinement
SAINT	data reduction
SADABS	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-04-12 
Deposition Author(s): Dlamini, N.P., Pandian, R., Onisuru, O., Achilonu, I.A., Sayed, Y.

---

Funding Organization	Location	Grant Number
National Research Foundation in South Africa	South Africa	NEP Grant No 129920
Science and Technology Funding Council	United Kingdom	ST/R002754/1

Revision History  

• Version 1.0: 2023-04-12
  Type: Initial release