6RG5

Human Carbonic Anhydrase II in complex with 4-(2-hydroxyethyl)benzenesulfonamide

• PDB DOI: https://doi.org/10.2210/pdb6RG5/pdb

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


• Deposited: 2019-04-16 Released: 2020-05-13 
• Deposition Author(s): Gloeckner, S., Heine, A., Klebe, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.09 Å
• R-Value Free: 0.127 
• R-Value Work: 0.111 
• R-Value Observed: 0.112 

Starting Model: experimental

Literature

Human Carbonic Anhydrase II in complex with 4-(2-hydroxyethyl)benzenesulfonamide

Gloeckner, S., Heine, A., Klebe, G.

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: 31.23 kDa 
• Atom Count: 2,739 
• Modelled Residue Count: 257 
• Deposited Residue Count: 265 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Carbonic anhydrase 2	A	265	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 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BE7	D [auth A]	(4-CARBOXYPHENYL)(CHLORO)MERCURY C7 H5 Cl Hg O2 YFZOUMNUDGGHIW-UHFFFAOYSA-M
S2O	E [auth A], F [auth A], G [auth A], H [auth A]	4-(2-hydroxyethyl)benzenesulfonamide C8 H11 N O3 S RYKHXKKLCRPAJP-UHFFFAOYSA-N
HG	C [auth A]	MERCURY (II) ION Hg BQPIGGFYSBELGY-UHFFFAOYSA-N
ZN	B [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
S2O	BindingDB:  6RG5	Ki: min: 50, max: 125 (nM) from 3 assay(s)
		Kd: min: 3.92e+5, max: 4.29e+5 (nM) from 2 assay(s)
		IC50: 3000 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.09 Å
• R-Value Free: 0.127 
• R-Value Work: 0.111 
• R-Value Observed: 0.112 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.463	α = 90
b = 41.569	β = 104.61
c = 72.29	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing
Coot	model building

Structure Validation

Entry History 

Deposition Data

• Released Date: 2020-05-13 
Deposition Author(s): Gloeckner, S., Heine, A., Klebe, G.

Revision History  

• Version 1.0: 2020-05-13
  Type: Initial release
  
• Version 1.1: 2024-01-24
  Changes: Data collection, Database references, Derived calculations, Refinement description