8PXG
Structure of Streptactin, solved at wavelength 2.75 A
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | Streptavidin | polymer | 127 | 13346.4 | 1 | UniProt (P22629) | Streptomyces avidinii | |
| 2 | B, C, D, E, F... (A) | CHLORIDE ION | non-polymer | 35.5 | 7 | Chemie (CL) | |||
| 3 | I (A) | GLYCEROL | non-polymer | 92.1 | 1 | Chemie (GOL) | |||
| 4 | J (A) | water | water | 18.0 | 69 | Chemie (HOH) |
Sequence modifications
A: 2 - 127 (UniProt: P22629)
| PDB | External Database | Details |
|---|---|---|
| Met 1 | - | initiating methionine |
| Val 32 | Glu 68 | engineered mutation |
| Thr 33 | Ser 69 | engineered mutation |
| Arg 35 | Val 71 | engineered mutation |
| Glu 105 | Ala 141 | engineered mutation |
| Gly 108 | Trp 144 | engineered mutation |
| Tyr 109 | Lys 145 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 13346.4 | |
| Non-Polymers* | Number of molecules | 8 |
| Total formula weight | 340.3 | |
| All* | Total formula weight | 13686.7 |
