Homo sapiens
| Assembly | Physical composition | Protein state | Molecular copy count | Associated components | Data consistency |
|---|---|---|---|---|---|
| 1 | Protein monomer | Monomer | Protein 1 | ZINC ION × 1 water × 1 | Consistent with protein count |
| UniProt name | CAH2_HUMAN |
| Isoform | — |
| PDB entities | 1 |
| Chains and sequence ranges | Author chain A； PDBConstruct 1–259； UniProt 1–259 |
The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.
| Entry ID entry_id | 1ca2 |
| Deposition date deposition_date | 1989-02-06 |
| Structure title title | REFINED STRUCTURE OF HUMAN CARBONIC ANHYDRASE II AT 2.0 ANGSTROMS RESOLUTION |
| Keywords keywords | LYASE(OXO-ACID); LYASE(OXO-ACID) |
| Experimental Method method | X-RAY DIFFRACTION |
This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.
Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)
| Rg（Guinier） | 18.70 Å |
| Rg (electron density) | 17.37 Å |
| Total Rg | 18.46 Å |
| Atom count | 2040 |
| Residues | 256 |
| Excluded volume | 36191 ų |
| Maximum q | 0.500 Å⁻¹ |
| Domain ID domain_id | d1ca2a_ |
| Class class | b — All beta proteins |
| Fold Fold fold | b.74 — Carbonic anhydrase |
| Superfamily Superfamily superfamily | b.74.1 — Carbonic anhydrase |
| Family Family family | b.74.1.1 — Carbonic anhydrase |
| Domain ID domain_id | 1ca2A00 |
| Class class | 3 — Alpha Beta |
| Architecture architecture | 10 — Roll |
| Topology topology | 200 — Carbonic Anhydrase II |
| Homologous superfamily homologous superfamily | 10 — Alpha carbonic anhydrase |