8ROW

Human Carbonic Anhydrase II in complex with biguanide derivative inhibitor 1-carbamimidamido-N-[(4 sulfamoylphenyl)methyl]methanimidamide, using glycerol as cryoprotectant

• PDB DOI: https://doi.org/10.2210/pdb8ROW/pdb

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


• Deposited: 2024-01-12 Released: 2025-01-29 
• Deposition Author(s): Baroni, C., Ferraroni, M.
• Funding Organization(s): European Union (EU)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.05 Å
• R-Value Free: 
  0.139 (Depositor), 0.148 (DCC) 
• R-Value Work: 
  0.116 (Depositor), 0.128 (DCC) 
• R-Value Observed: 
  0.117 (Depositor) 

Starting Model: experimental

Literature

Human Carbonic Anhydrase II in complex with biguanide derivative inhibitor 1-carbamimidamido-N-[(4 sulfamoylphenyl)methyl]methanimidamide, using glycerol as cryoprotectant

Baroni, C., Ferraroni, 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: 29.99 kDa 
• Atom Count: 2,428 
• 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
A1H15 (Subject of Investigation/LOI)	C [auth A], D [auth A]	1-carbamimidoyl-3-[(4-sulfamoylphenyl)methyl]guanidine C9 H14 N6 O2 S ANGRTLKLSBCWDK-UHFFFAOYSA-N
GOL	E [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
ZN	B [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.05 Å
• R-Value Free:  0.139 (Depositor), 0.148 (DCC) 
• R-Value Work:  0.116 (Depositor), 0.128 (DCC) 
• R-Value Observed: 0.117 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.44	α = 90
b = 41.3	β = 104.29
c = 72.03	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XSCALE	data scaling
XDS	data reduction
REFMAC	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-01-29 
Deposition Author(s): Baroni, C., Ferraroni, M.

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Funding Organization	Location	Grant Number
European Union (EU)	European Union	B83C22003920001

Revision History  

• Version 1.0: 2025-01-29
  Type: Initial release