3OTJ
A Crystal Structure of Trypsin Complexed with BPTI (Bovine Pancreatic Trypsin Inhibitor) by X-ray/Neutron Joint Refinement
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (E) | 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 (I) | Pancreatic trypsin inhibitor | polymer | 58 | 6527.6 | 1 | UniProt (P00974) Pfam (PF00014) | Bos taurus (bovine) | Basic protease inhibitor, BPTI, BPI, Aprotinin |
| 3 | C (E) | CALCIUM ION | non-polymer | 40.1 | 1 | Chemie (CA) | |||
| 4 | D, E, F, G, H (E, I) | SULFATE ION | non-polymer | 96.1 | 5 | Chemie (SO4) | |||
| 5 | I, J (E, I) | water | water | 18.0 | 120 | Chemie (DOD) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 29851.9 | |
| Non-Polymers* | Number of molecules | 6 |
| Total formula weight | 520.4 | |
| All* | Total formula weight | 30372.2 |
