9EN9 | pdb_00009en9

Human Carbonic Anhydrase IX-mimic in complex with (4-{[(4-sulfamoylphenyl)amino]methyl}phenyl)boronic acid

• PDB DOI: https://doi.org/10.2210/pdb9EN9/pdb

• Classification: LYASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2024-03-12 Released: 2025-03-26 
• Deposition Author(s): Chiara, B., Marta, F.
• Funding Organization(s): European Union (EU)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.02 Å
• R-Value Free: 
  0.251 (Depositor), 0.252 (DCC) 
• R-Value Work: 
  0.201 (Depositor), 0.209 (DCC) 
• R-Value Observed: 
  0.203 (Depositor) 

Literature

Human Carbonic Anhydrase IX-mimic in complex with (4-{[(4-sulfamoylphenyl)amino]methyl}phenyl)boronic acid

Chiara, B., Marta, F.

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: 30.49 kDa 
• Atom Count: 2,138 
• Modeled Residue Count: 262 
• Deposited Residue Count: 266 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Carbonic anhydrase 2	A	266	Homo sapiens	Mutation(s): 10  Gene Names: CA2 EC: 4.2.1.1 (UniProt), 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
A1H53 (Subject of Investigation/LOI)	B [auth A]	[4-[[(4-sulfamoylphenyl)amino]methyl]phenyl]boronic acid C13 H15 B N2 O4 S SWSJCBDUGXEGLI-UHFFFAOYSA-N
ZN	C [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
NI	D [auth A]	NICKEL (II) ION Ni VEQPNABPJHWNSG-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.02 Å
• R-Value Free:  0.251 (Depositor), 0.252 (DCC) 
• R-Value Work:  0.201 (Depositor), 0.209 (DCC) 
• R-Value Observed: 0.203 (Depositor) 

Space Group: I 4 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 157.44	α = 90
b = 157.44	β = 90
c = 157.44	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: 2025-03-26 
Deposition Author(s): Chiara, B., Marta, F.

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

Revision History  

• Version 1.0: 2025-03-26
  Type: Initial release