1GI4
A NOVEL SERINE PROTEASE INHIBITION MOTIF INVOLVING A MULTI-CENTERED SHORT HYDROGEN BONDING NETWORK AT THE ACTIVE SITE
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A | BETA-TRYPSIN | polymer | 223 | 23324.3 | 1 | UniProt (P00760) Pfam (PF00089) In PDB | Bos taurus (cattle) | |
| 2 | A | CALCIUM ION | non-polymer | 40.1 | 1 | Chemie (CA) | |||
| 3 | A | ZINC ION | non-polymer | 65.4 | 1 | Chemie (ZN) | |||
| 4 | A | SULFATE ION | non-polymer | 96.1 | 1 | Chemie (SO4) | |||
| 5 | A | 2-(2-HYDROXY-PHENYL)-3H-BENZOIMIDAZOLE-5-CARBOXAMIDINE | non-polymer | 253.3 | 1 | Chemie (122) | |||
| 6 | water | water | 18.0 | 275 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 23324.3 | |
| Non-Polymers* | Number of molecules | 4 |
| Total formula weight | 454.8 | |
| All* | Total formula weight | 23779.1 |
