9QQ2 | pdb_00009qq2

Crystal structure of human carbonic anhydrase VII in complex with a benzenesulfonamide derivative containing the duloxetine moiety.

PDB DOI: https://doi.org/10.2210/pdb9QQ2/pdb

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

Deposited: 2025-03-31 Released: 2026-04-15
Deposition Author(s): Di Fiore, A., D'Ambrosio, K., De Simone, G.
Funding Organization(s): Not funded

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.35 Å
R-Value Free:
0.189 (Depositor), 0.200 (DCC)
R-Value Work:
0.153 (Depositor), 0.161 (DCC)
R-Value Observed:
0.154 (Depositor)

wwPDB Validation 3D Report Full Report

Validation slider image for 9QQ2

Ligand Structure Quality Assessment

This is version 1.0 of the entry. See complete history.

Literature

Multimodal Neuropathic Pain Management: Novel Approaches Through Inhibition of the Carbonic Anhydrase Enzymes

Angeli, A., Rosi, G., Micheli, L., D'Ambrosio, K., Di Fiore, A., Ghelardini, C., Di Cesare Mannelli, L., Bartolucci, G., Carta, F., De Simone, G., Papini, A.M., Supuran, C.T.

To be published.

Macromolecule Content

Total Structure Weight: 31.52 kDa
Atom Count: 2,310
Modeled Residue Count: 259
Deposited Residue Count: 274
Unique protein chains: 1

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Carbonic anhydrase 7	A	274	Homo sapiens	Mutation(s): 2 Gene Names: CA7 EC: 4.2.1.1
UniProt & NIH Common Fund Data Resources
Find proteins for P43166 (Homo sapiens) Explore P43166 Go to UniProtKB: P43166
PHAROS: P43166 GTEx: ENSG00000168748
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P43166
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
A1I9B (Subject of Investigation/LOI) Query on A1I9B Download:Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A] mmCIF format, chain C [auth A]	C [auth A]	1-methyl-1-[(3~{S})-3-naphthalen-1-yloxy-3-thiophen-2-yl-propyl]-3-[(4-sulfamoylphenyl)methyl]thiourea C₂₆ H₂₇ N₃ O₃ S₃ DPFWMQCOCUDXJZ-DEOSSOPVSA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]
ZN Query on ZN Download:Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A] mmCIF format, chain B [auth A]	B [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N		Interactions Focus chain B [auth A] Interactions & Density Focus chain B [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.35 Å
R-Value Free: 0.189 (Depositor), 0.200 (DCC)
R-Value Work: 0.153 (Depositor), 0.161 (DCC)
R-Value Observed: 0.154 (Depositor)

Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 66.656	α = 90
b = 89.866	β = 90
c = 44.409	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
SCALEPACK	data scaling
HKL-3000	data reduction
REFMAC	phasing

Structure Validation

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Ligand Structure Quality Assessment

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Entry History

& Funding Information

Deposition Data

Released Date: 2026-04-15

Deposition Author(s):

Funding Organization	Location	Grant Number
Not funded		--

Revision History (Full details and data files)

Version 1.0: 2026-04-15
Type: Initial release

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.