1SFI
High resolution structure of a potent, cyclic protease inhibitor from sunflower seeds
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | TRYPSIN | polymer | 223 | 23324.3 | 1 | UniProt (P00760) Pfam (PF00089) | Bos taurus (cattle) | |
| 2 | B (I) | Trypsin inhibitor 1 | polymer | 14 | 1535.8 | 1 | UniProt (Q4GWU5) BIRD (PRD_001097) | Helianthus annuus (Common sunflower) | SFTI-1 |
| 3 | C, D, E (A) | SULFATE ION | non-polymer | 96.1 | 3 | Chemie (SO4) | |||
| 4 | F (A) | CALCIUM ION | non-polymer | 40.1 | 1 | Chemie (CA) | |||
| 5 | G, H (A, I) | water | water | 18.0 | 376 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 24860.1 | |
| Non-Polymers* | Number of molecules | 4 |
| Total formula weight | 328.3 | |
| All* | Total formula weight | 25188.4 |
