Escherichia coli
| Assembly | Physical composition | Protein state | Molecular copy count | Associated components | Data consistency |
|---|---|---|---|---|---|
| 1 | Protein homooligomer | Homooligomer | Protein 2 | GLYCEROL × 2 water × 2 | Consistent with protein count |
| UniProt name | PBP4_ECOLI |
| Isoform | — |
| PDB entities | 1 |
| Chains and sequence ranges | Author chain A； PDBConstruct 2–458； UniProt 21–477 |
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 | 2ex2 |
| Deposition date deposition_date | 2005-11-07 |
| Structure title title | Crystal structure of penicillin binding protein 4 (dacB) from Escherichia coli |
| Keywords keywords | ;penicillin-binding protein, penicillin, cephem, penem, D-alanyl-D-alanine-carboxypeptidase, D-alanyl-D-alanine-endopeptidase, 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） | 30.35 Å |
| Rg (electron density) | 29.34 Å |
| Total Rg | 30.09 Å |
| Atom count | 6982 |
| Residues | 912 |
| Excluded volume | 124310 ų |
| Maximum q | 0.500 Å⁻¹ |
| Domain ID domain_id | d2ex2a1 |
| Class class | e — Multi-domain proteins (alpha and beta) |
| Fold Fold fold | e.3 — beta-lactamase/transpeptidase-like |
| Superfamily Superfamily superfamily | e.3.1 — beta-lactamase/transpeptidase-like |
| Family Family family | e.3.1.3 — Dac-like |
| Domain ID domain_id | 2ex2A01 |
| Class class | 3 — Alpha Beta |
| Architecture architecture | 40 — 3-Layer(aba) Sandwich |
| Topology topology | 710 — Beta-lactamase |
| Homologous superfamily homologous superfamily | 10 — DD-peptidase/beta-lactamase superfamily |
| Domain ID domain_id | 2ex2A02 |
| Class class | 3 — Alpha Beta |
| Architecture architecture | 50 — 3-Layer(bba) Sandwich |
| Topology topology | 80 — D-tyrosyl-trna(Tyr) Deacylase; Chain: A; |
| Homologous superfamily homologous superfamily | 20 — D-Ala-D-Ala carboxypeptidase C, peptidase S13 |