3I29
Crystal structure of a binary complex between an mutant trypsin inhibitor with bovine trypsin
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | Cationic trypsin | polymer | 223 | 23324.3 | 1 | UniProt (P00760) Pfam (PF00089) | Bos taurus (bovine) | Beta-trypsin, Alpha-trypsin chain 1, Alpha-trypsin chain 2 |
| 2 | B (B) | Chymotrypsin inhibitor 3 | polymer | 187 | 20740.4 | 1 | UniProt (P10822) Pfam (PF00197) | Psophocarpus tetragonolobus (Goa bean) | |
| 3 | C (A) | CALCIUM ION | non-polymer | 40.1 | 1 | Chemie (CA) | |||
| 4 | D, E (A, B) | water | water | 18.0 | 125 | Chemie (HOH) |
Sequence modifications
B: 1 - 183 (UniProt: P10822)
| PDB | External Database | Details |
|---|---|---|
| Gly -3 | - | expression tag |
| Ser -2 | - | expression tag |
| His -1 | - | expression tag |
| Met 0 | - | expression tag |
| Tyr 64 | Phe 88 | engineered mutation |
| Arg 65 | Leu 89 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 44064.6 | |
| Non-Polymers* | Number of molecules | 1 |
| Total formula weight | 40.1 | |
| All* | Total formula weight | 44104.7 |
