Enterobacteria phage T4
| Assembly | Physical composition | Protein state | Molecular copy count | Associated components | Data consistency |
|---|---|---|---|---|---|
| 1 | Protein monomer | Monomer | Protein 1 | MAGNESIUM ION × 2 water × 1 | Consistent with protein count |
| UniProt name | RNH_BPT4 |
| Isoform | — |
| PDB entities | 1 |
| Chains and sequence ranges | Author chain A； PDBConstruct 1–305； UniProt 1–305 |
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 | 1tfr |
| Deposition date deposition_date | 1996-04-27 |
| Structure title title | RNASE H FROM BACTERIOPHAGE T4 |
| Keywords keywords | 5U-3U EXONUCLEASE, RNA:RNA, DNA:DNA, METAL-DEPENDENT, MAGNESIUM-CONTAINING, HYDROLASE (NUCLEIC ACID), HYDROLASE; HYDROLASE |
| 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） | 21.32 Å |
| Rg (electron density) | 20.48 Å |
| Total Rg | 21.41 Å |
| Atom count | 2327 |
| Residues | 283 |
| Excluded volume | 41948 ų |
| Maximum q | 0.500 Å⁻¹ |
| Domain ID domain_id | d1tfra1 |
| Class class | a — All alpha proteins |
| Fold Fold fold | a.60 — SAM domain-like |
| Superfamily Superfamily superfamily | a.60.7 — 5' to 3' exonuclease, C-terminal subdomain |
| Family Family family | a.60.7.1 — 5' to 3' exonuclease, C-terminal subdomain |
| Domain ID domain_id | d1tfra2 |
| Class class | c — Alpha and beta proteins (a/b) |
| Fold Fold fold | c.120 — PIN domain-like |
| Superfamily Superfamily superfamily | c.120.1 — PIN domain-like |
| Family Family family | c.120.1.2 — 5' to 3' exonuclease catalytic domain |
| Domain ID domain_id | 1tfrA01 |
| Class class | 3 — Alpha Beta |
| Architecture architecture | 40 — 3-Layer(aba) Sandwich |
| Topology topology | 50 — Rossmann fold |
| Homologous superfamily homologous superfamily | 1010 — 5'-nuclease |
| Domain ID domain_id | 1tfrA02 |
| Class class | 1 — Mainly Alpha |
| Architecture architecture | 10 — Orthogonal Bundle |
| Topology topology | 150 — DNA polymerase; domain 1 |
| Homologous superfamily homologous superfamily | 20 — 5' to 3' exonuclease, C-terminal subdomain |