Homo sapiens
| Assembly | Physical composition | Protein state | Molecular copy count | Associated components | Data consistency |
|---|---|---|---|---|---|
| 1 | Protein homooligomer | Homooligomer | Protein 3 | water × 3 | Consistent with protein count |
| UniProt name | SMAD2_HUMAN |
| Isoform | — |
| PDB entities | 1 |
| Chains and sequence ranges | Author chain A； PDBConstruct 1–227； UniProt 241–467 |
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 | 1khx |
| Deposition date deposition_date | 2001-12-01 |
| Structure title title | Crystal structure of a phosphorylated Smad2 |
| Keywords keywords | TGF-beta signaling, Smad2, phosphorylation, receptor kinase signaling, cancer, TRANSCRIPTION; TRANSCRIPTION |
| 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） | 26.19 Å |
| Rg (electron density) | 25.07 Å |
| Total Rg | 26.02 Å |
| Atom count | 4839 |
| Residues | 603 |
| Excluded volume | 85345 ų |
| Maximum q | 0.500 Å⁻¹ |
| Domain ID domain_id | d1khxa_ |
| Class class | b — All beta proteins |
| Fold Fold fold | b.26 — SMAD/FHA domain |
| Superfamily Superfamily superfamily | b.26.1 — SMAD/FHA domain |
| Family Family family | b.26.1.1 — SMAD domain |
| Domain ID domain_id | 1khxA00 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 60 — Sandwich |
| Topology topology | 200 — Tumour Suppressor Smad4 |
| Homologous superfamily homologous superfamily | 10 — |