8VQ5 | pdb_00008vq5

hCA-II-Bivalent compound bound complex EthylUreadibenzensulfonamide

• PDB DOI: https://doi.org/10.2210/pdb8VQ5/pdb

• Classification: LYASE/INHIBITOR
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2024-01-17 Released: 2025-07-16 
• Deposition Author(s): Ismail, M.M.
• Funding Organization(s): National Science Foundation (NSF, United States)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 
  0.159 (Depositor), 0.170 (DCC) 
• R-Value Work: 
  0.124 (Depositor), 0.143 (DCC) 

Starting Model: experimental

Literature

SBDD of Carbonic Anhydrase II Inhibitors

Ismail, M.M.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content 

• Total Structure Weight: 29.85 kDa 
• Atom Count: 2,357 
• Modeled Residue Count: 259 
• Deposited Residue Count: 259 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Carbonic anhydrase 2	A	259	Homo sapiens	Mutation(s): 0  Gene Names: CA2 EC: 4.2.1.1 (PDB Primary Data), 4.2.1.69 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P00918 (Homo sapiens) Explore P00918  Go to UniProtKB:  P00918
PHAROS:  P00918 GTEx:  ENSG00000104267

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
A1ADH (Subject of Investigation/LOI)	C [auth A]	4,4'-[carbonylbis(azanediylethane-2,1-diyl)]di(benzene-1-sulfonamide) C17 H22 N4 O5 S2 MBLSTXDMAAHFCE-UHFFFAOYSA-N
ZYX (Subject of Investigation/LOI)	D [auth A]	4-(2-AMINOETHYL)BENZENESULFONAMIDE C8 H12 N2 O2 S FXNSVEQMUYPYJS-UHFFFAOYSA-N
ZN	B [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free:  0.159 (Depositor), 0.170 (DCC) 
• R-Value Work:  0.124 (Depositor), 0.143 (DCC) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.42	α = 90
b = 41.3	β = 104.6
c = 72.5	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
xia2	data reduction
xia2	data scaling
REFMAC	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-07-16 
Deposition Author(s): Ismail, M.M.

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Funding Organization	Location	Grant Number
National Science Foundation (NSF, United States)	United States	--

Revision History  

• Version 1.0: 2025-07-16
  Type: Initial release