Streptomyces avidinii
| Assembly | Physical composition | Protein state | Molecular copy count | Associated components | Data consistency |
|---|---|---|---|---|---|
| 1 | Protein homooligomer | Homooligomer | Protein 4 | BIOTIN × 4 CHLORIDE ION × 4 water × 4 | Consistent with protein count |
| UniProt name | SAV_STRAV |
| Isoform | — |
| PDB entities | 1 |
| Chains and sequence ranges | Author chain A； PDBConstruct 1–159； UniProt 25–183 |
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 | 4ekv |
| Deposition date deposition_date | 2012-04-09 |
| Structure title title | Streptavidin 8-aa-loop H127C mutein with reversible biotin binding |
| Keywords keywords | Beta-barrel, Binding protein, Biotin-binding, biotin-binding protein; biotin-binding protein |
| 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） | 23.11 Å |
| Rg (electron density) | 21.99 Å |
| Total Rg | 22.90 Å |
| Atom count | 3660 |
| Residues | 492 |
| Excluded volume | 63911 ų |
| Maximum q | 0.500 Å⁻¹ |
| Domain ID domain_id | d4ekva_ |
| Class class | b — All beta proteins |
| Fold Fold fold | b.61 — Streptavidin-like |
| Superfamily Superfamily superfamily | b.61.1 — Avidin/streptavidin |
| Family Family family | b.61.1.1 — Avidin/streptavidin |
| Domain ID domain_id | 4ekvA00 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 40 — Beta Barrel |
| Topology topology | 128 — Lipocalin |
| Homologous superfamily homologous superfamily | 30 — Avidin-like |