Source assertion

PDBe/SIFTS maps PDB 3IAI to UniProt Q16790 with chain-level identity and coverage retained.

Evidence ID: STRUCTURE:PDB:3IAI:UNIPROT:Q16790
Subject dossier: ca9
Source chain: uniprot + pdbe
Upstream record: 3IAI
Corpus snapshot: 2026-07-14T09:23:31Z
Admission status: In this release

Experimental structure

Crystal structure of the catalytic domain of the tumor-associated human carbonic anhydrase IX

PDB ID: 3IAI
Experimental method: X-ray diffraction
Resolution: %!f(*float64=0x24b06affe410) Å
SIFTS identifier: CAH9_HUMAN
Deposited: 20090714
Released / revised: 20090908 / 20241127

Chain-level mapping

Entity	Chain	Structural asym	Identity	Coverage	UniProt range
1	`A`	`A`	100.0%	60.4%	137–391
1	`B`	`B`	100.0%	60.4%	137–391
1	`C`	`C`	100.0%	60.4%	137–391
1	`D`	`D`	100.0%	60.4%	137–391

Experimental constructs

Entity	Chains / asym IDs	Molecule	Length	Mutation flag	Preparation
1	A, B, C, D / A, B, C, D	Carbonic anhydrase 9polypeptide(L)	257 residues	C41S	Genetically manipulated

Reading this structure

This is an experimentally determined structure, not a predicted model. A co-crystallised ligand, if any, does not by itself show binding affinity. The structure says nothing about kinetics, pathway rate or metabolic flux.

Snapshot provenance

Each row is a source snapshot this record was built from: when it was retrieved, its path and SHA-256 digest, and the exact request. The snapshot files stay with the build and are not served here. These rows document this record; they are not general citations.

Retrieved	Snapshot	SHA-256	Upstream request
2026-07-14T09:21:33Z	`raw/uniprot/entries/Q16790.json`	`77abc0523fc4c2b797ea15d860a4bb98365bcf0caec1ee88ba765973570f1f22`	Open exact source
2026-07-14T09:22:03Z	`raw/pdbe/mappings/3iai.json`	`76b387e0486b626ced5923ca334f7242ac9361e8c0127c9e853edf9f26c4e054`	Open exact source
2026-07-14T09:22:14Z	`raw/pdbe/summary/chunk-02.json`	`79ac3fb4e9e30c8c858b4d8ed8bbe6f85e8e0d0e3630627a999691f40a3d330d`	Open exact source
2026-07-14T09:22:14Z	`raw/pdbe/experiment/chunk-02.json`	`e42f681713cd9cdce851cc48738b3c6e0f0c075d0006a640c484bcab84561898`	Open exact source
2026-07-14T09:22:15Z	`raw/pdbe/molecules/chunk-02.json`	`27833f4d4cb9a9bfcb110f6e551fe2a5ccef01ccea4dda947132af6c51bd66e6`	Open exact source