9I2I
X-ray structure of the B1 domain of streptococcal protein G triple mutant T2Q, N8D, and N37D (GB1-QDD).
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B (A, B) | Immunoglobulin G-binding protein G | polymer | 56 | 6230.8 | 2 | UniProt (P19909) Pfam (PF01378) | Streptococcus sp. | IgG-binding protein G |
| 2 | C (B) | SODIUM ION | non-polymer | 23.0 | 1 | Chemie (NA) | |||
| 3 | D, E (A, B) | water | water | 18.0 | 147 | Chemie (HOH) |
Sequence modifications
A, B: 2 - 56 (UniProt: P19909)
| PDB | External Database | Details |
|---|---|---|
| Met 1 | - | initiating methionine |
| Gln 2 | Thr 303 | engineered mutation |
| Asp 8 | Asn 309 | engineered mutation |
| Asp 37 | Asn 338 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 12461.6 | |
| Non-Polymers* | Number of molecules | 1 |
| Total formula weight | 23.0 | |
| All* | Total formula weight | 12484.5 |
