Escherichia coli
| Assembly | Physical composition | Protein state | Molecular copy count | Associated components | Data consistency |
|---|---|---|---|---|---|
| 1 | Protein monomer | Monomer | Protein 1 | No other associated polymer | Consistent with protein count |
| UniProt name | LEXA_ECOLI |
| Isoform | — |
| PDB entities | 1 |
| Chains and sequence ranges | Author chain A； PDBConstruct 1–84； UniProt 1–84 |
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 | 1lea |
| Deposition date deposition_date | 1994-05-11 |
| Structure title title | SOLUTION STRUCTURE OF THE LEXA REPRESSOR DNA BINDING DETERMINED BY 1H NMR SPECTROSCOPY |
| Keywords keywords | TRANSCRIPTION REGULATION; TRANSCRIPTION REGULATION |
| Experimental Method method | SOLUTION NMR |
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） | 13.06 Å |
| Rg (electron density) | 11.42 Å |
| Total Rg | 12.92 Å |
| Atom count | 1141 |
| Residues | 72 |
| Excluded volume | 9958 ų |
| Maximum q | 0.500 Å⁻¹ |
| Domain ID domain_id | d1leaa_ |
| Class class | a — All alpha proteins |
| Fold Fold fold | a.4 — DNA/RNA-binding 3-helical bundle |
| Superfamily Superfamily superfamily | a.4.5 — 'Winged helix' DNA-binding domain |
| Family Family family | a.4.5.2 — LexA repressor, N-terminal DNA-binding domain |
| Domain ID domain_id | 1leaA00 |
| Class class | 1 — Mainly Alpha |
| Architecture architecture | 10 — Orthogonal Bundle |
| Topology topology | 10 — Arc Repressor Mutant, subunit A |
| Homologous superfamily homologous superfamily | 10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain |