1RXK
crystal structure of streptavidin mutant (M3) a combination of M1+M2
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) | Streptavidin | polymer | 125 | 13325.5 | 2 | UniProt (P22629) Pfam (PF01382) | Streptomyces avidinii | |
| 2 | C, D (A, B) | 5-(2-OXO-HEXAHYDRO-THIENO[3,4-D]IMIDAZOL-6-YL)-PENTANOIC ACID (4-NITRO-PHENYL)-AMIDE | non-polymer | 364.4 | 2 | Chemie (BNI) | |||
| 3 | E, F (A, B) | water | water | 18.0 | 153 | Chemie (HOH) |
Sequence modifications
A, B: 14 - 135 (UniProt: P22629)
| PDB | External Database | Details |
|---|---|---|
| Thr 48 | 72 | SEE REMARK 999 |
| Ala 49 | 73 | SEE REMARK 999 |
| Thr 50 | 74 | SEE REMARK 999 |
| Ser 50 | Gly 75 | SEE REMARK 999 |
| Asn 50 | Asn 76 | SEE REMARK 999 |
| Glu 50 | Ala 77 | SEE REMARK 999 |
| Ile 51 | Glu 78 | SEE REMARK 999 |
| Lys 52 | Ser 79 | SEE REMARK 999 |
| Arg 124 | Leu 148 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 26651.0 | |
| Non-Polymers* | Number of molecules | 2 |
| Total formula weight | 728.8 | |
| All* | Total formula weight | 27379.8 |
