Saccharomyces cerevisiae
| Assembly | Physical composition | Protein state | Molecular copy count | Associated components | Data consistency |
|---|---|---|---|---|---|
| 1 | Protein monomer | Monomer | Protein 1 | water × 1 | Consistent with protein count |
| UniProt name | TOP1_YEAST |
| Isoform | — |
| PDB entities | 1 |
| Chains and sequence ranges | Author chain A； PDBConstruct 1–223； UniProt 141–363 |
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 | 1ois |
| Deposition date deposition_date | 1996-09-14 |
| Structure title title | YEAST DNA TOPOISOMERASE I, N-TERMINAL FRAGMENT |
| Keywords keywords | ISOMERASE, TOPOISOMERASE, DNA-BINDING PROTEIN, DNA BINDING PROTEIN; DNA 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） | 21.71 Å |
| Rg (electron density) | 20.81 Å |
| Total Rg | 21.76 Å |
| Atom count | 2234 |
| Residues | 221 |
| Excluded volume | 32518 ų |
| Maximum q | 0.500 Å⁻¹ |
| Domain ID domain_id | d1oisa_ |
| Class class | e — Multi-domain proteins (alpha and beta) |
| Fold Fold fold | e.15 — Eukaryotic DNA topoisomerase I, N-terminal DNA-binding fragment |
| Superfamily Superfamily superfamily | e.15.1 — Eukaryotic DNA topoisomerase I, N-terminal DNA-binding fragment |
| Family Family family | e.15.1.1 — Eukaryotic DNA topoisomerase I, N-terminal DNA-binding fragment |
| Domain ID domain_id | 1oisA01 |
| Class class | 1 — Mainly Alpha |
| Architecture architecture | 10 — Orthogonal Bundle |
| Topology topology | 10 — Arc Repressor Mutant, subunit A |
| Homologous superfamily homologous superfamily | 41 — Yeast DNA topoisomerase - domain 1 |
| Domain ID domain_id | 1oisA02 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 170 — Beta Complex |
| Topology topology | 11 — DNA Topoisomerase I; domain 2 |
| Homologous superfamily homologous superfamily | 10 — DNA Topoisomerase I, domain 2 |