8J2O

Crystal Structure of Human Carbonic Anhydrase II In-complex with Acetohexamide at 2.6 A Resolution

• PDB DOI: https://doi.org/10.2210/pdb8J2O/pdb

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


• Deposited: 2023-04-14 Released: 2024-04-24 
• Deposition Author(s): Rasheed, S., Huda, N., Choudhary, M.I.
• Funding Organization(s): Higher Education Commission Pakistan (HEC Pakistan)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.259 
• R-Value Work: 0.177 
• R-Value Observed: 0.181 

Starting Model: experimental

Literature

Crystal Structure of Human Carbonic Anhydrase II In-complex with Acetohexamide at 2.6 A Resolution

Rasheed, S., Huda, N., Choudhary, M.I.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 29.77 kDa 
• Atom Count: 2,162 
• Modelled Residue Count: 257 
• Deposited Residue Count: 260 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Carbonic anhydrase 2	A	260	Homo sapiens	Mutation(s): 0  Gene Names: CA2 EC: 4.2.1.1 (PDB Primary Data), 4.2.1.69 (UniProt)
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
TF9 (Subject of Investigation/LOI)	B [auth A]	acetohexamide C15 H20 N2 O4 S VGZSUPCWNCWDAN-UHFFFAOYSA-N
SO4	D [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
ZN	C [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
SO4	BindingDB:  8J2O	Ki: min: 8.90e+7, max: 3.00e+8 (nM) from 4 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.259 
• R-Value Work: 0.177 
• R-Value Observed: 0.181 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.068	α = 90
b = 41.029	β = 104.19
c = 71.628	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PROTEUM PLUS	data reduction
Aimless	data scaling
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-04-24 
Deposition Author(s): Rasheed, S., Huda, N., Choudhary, M.I.

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Funding Organization	Location	Grant Number
Higher Education Commission Pakistan (HEC Pakistan)	Pakistan	Ref No. 20-17595/NRPU/R&D/HEC/2021 2021

Revision History  

• Version 1.0: 2024-04-24
  Type: Initial release
  
• Version 1.1: 2024-11-20
  Changes: Derived calculations, Structure summary