Escherichia coli
| Assembly | Physical composition | Protein state | Molecular copy count | Associated components | Data consistency |
|---|---|---|---|---|---|
| 1 | Protein monomer | Monomer | Protein 1 | STRONTIUM ION × 1 water × 1 | Consistent with protein count |
| UniProt name | PRIM_ECOLI |
| Isoform | — |
| PDB entities | 1 |
| Chains and sequence ranges | Author chain A； PDBConstruct 16–338； UniProt 111–433 |
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 | 1dd9 |
| Deposition date deposition_date | 1999-11-09 |
| Structure title title | STRUCTURE OF THE DNAG CATALYTIC CORE |
| Keywords keywords | TOPRIM, 3-HELIX BUNDLE, DNA-BINDING PROTEIN, RNA POLYMERASE, REPLICATION PROTEIN, PRIMASE, TRANSFERASE; TRANSFERASE |
| 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） | 23.58 Å |
| Rg (electron density) | 22.88 Å |
| Total Rg | 23.56 Å |
| Atom count | 2459 |
| Residues | 310 |
| Excluded volume | 43567 ų |
| Maximum q | 0.500 Å⁻¹ |
| Domain ID domain_id | d1dd9a_ |
| Class class | e — Multi-domain proteins (alpha and beta) |
| Fold Fold fold | e.13 — DNA primase core |
| Superfamily Superfamily superfamily | e.13.1 — DNA primase core |
| Family Family family | e.13.1.1 — DNA primase DnaG catalytic core |
| Domain ID domain_id | 1dd9A01 |
| Class class | 3 — Alpha Beta |
| Architecture architecture | 90 — Alpha-Beta Complex |
| Topology topology | 980 — DNA primase DNAg catalytic core, N-terminal domain |
| Homologous superfamily homologous superfamily | 10 — DNA primase, catalytic core, N-terminal domain |
| Domain ID domain_id | 1dd9A02 |
| Class class | 3 — Alpha Beta |
| Architecture architecture | 40 — 3-Layer(aba) Sandwich |
| Topology topology | 1360 — Dna Topoisomerase Vi A Subunit; Chain: A, domain 2 |
| Homologous superfamily homologous superfamily | 10 — |
| Domain ID domain_id | 1dd9A03 |
| Class class | 1 — Mainly Alpha |
| Architecture architecture | 20 — Up-down Bundle |
| Topology topology | 50 — Pheromone ER-1 |
| Homologous superfamily homologous superfamily | 20 — DnaG, RNA polymerase domain, helical bundle |