3K1A
Insights into substrate binding at FeMo-cofactor in nitrogenase from the structure of an alpha-70Ile MoFe protein variant
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, C (A, C) | Nitrogenase molybdenum-iron protein alpha chain | polymer | 491 | 55245.9 | 2 | UniProt (P07328) Pfam (PF00148) | Azotobacter vinelandii | Nitrogenase component I, Dinitrogenase |
| 2 | B, D (B, D) | Nitrogenase molybdenum-iron protein beta chain | polymer | 522 | 59404.7 | 2 | UniProt (P07329) Pfam (PF11844) Pfam (PF00148) | Azotobacter vinelandii | Nitrogenase component I, Dinitrogenase |
| 3 | E, J (A, C) | 3-HYDROXY-3-CARBOXY-ADIPIC ACID | non-polymer | 206.2 | 2 | Chemie (HCA) | |||
| 4 | F, I (A, C) | FE(7)-MO-S(9)-N CLUSTER | non-polymer | 789.4 | 2 | Chemie (CFN) | |||
| 5 | G, L (B, D) | FE(8)-S(7) CLUSTER | non-polymer | 671.2 | 2 | Chemie (CLF) | |||
| 6 | H, K (B, D) | CALCIUM ION | non-polymer | 40.1 | 2 | Chemie (CA) | |||
| 7 | M, N, O, P (A, B, C, D) | water | water | 18.0 | 830 | Chemie (HOH) |
Sequence modifications
A, C: 2 - 492 (UniProt: P07328)
| PDB | External Database | Details |
|---|---|---|
| Ile 70 | Val 70 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 |
| Total formula weight | 229301.1 | |
| Non-Polymers* | Number of molecules | 8 |
| Total formula weight | 3413.8 | |
| All* | Total formula weight | 232714.9 |
