Escherichia coli
| Assembly | Physical composition | Protein state | Molecular copy count | Associated components | Data consistency |
|---|---|---|---|---|---|
| 1 | Protein homooligomer | Homooligomer | Protein 4 | ZINC ION × 4 water × 4 | Consistent with protein count |
| UniProt name | CAN_ECOLI |
| Isoform | — |
| PDB entities | 1 |
| Chains and sequence ranges | Author chain A； PDBConstruct 1–220； UniProt 1–220 |
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 | 1i6p |
| Deposition date deposition_date | 2001-03-02 |
| Structure title title | CRYSTAL STRUCTURE OF E. COLI BETA CARBONIC ANHYDRASE (ECCA) |
| Keywords keywords | carbonic anhydrase, metalloenzyme, zinc coordination, pH-dependent activity, MAD phasing, LYASE; LYASE |
| 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） | 28.59 Å |
| Rg (electron density) | 27.46 Å |
| Total Rg | 28.30 Å |
| Atom count | 6864 |
| Residues | 856 |
| Excluded volume | 122000 ų |
| Maximum q | 0.500 Å⁻¹ |
| Domain ID domain_id | d1i6pa_ |
| Class class | c — Alpha and beta proteins (a/b) |
| Fold Fold fold | c.53 — Resolvase-like |
| Superfamily Superfamily superfamily | c.53.2 — beta-carbonic anhydrase, cab |
| Family Family family | c.53.2.1 — beta-carbonic anhydrase, cab |
| Domain ID domain_id | 1i6pA00 |
| Class class | 3 — Alpha Beta |
| Architecture architecture | 40 — 3-Layer(aba) Sandwich |
| Topology topology | 1050 — Beta-carbonic Anhydrase; Chain A |
| Homologous superfamily homologous superfamily | 10 — Carbonic anhydrase |