4BNR
Extremely stable complex of crayfish trypsin with bovine trypsin inhibitor
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B (A, B) | HEPATOPANCREAS TRYPSIN | polymer | 237 | 25072.4 | 2 | UniProt (Q52V24) Pfam (PF00089) | PONTASTACUS LEPTODACTYLUS (NARROW-FINGERED CRAYFISH) | |
| 2 | C, D (I, J) | PANCREATIC TRYPSIN INHIBITOR | polymer | 100 | 10915.8 | 2 | UniProt (P00974) Pfam (PF00014) | BOS TAURUS (CATTLE) | BOVINE PANCREATIC TRYPSIN INHIBITOR, APROTININ, BASIC PROTEASE INHIBITOR, BPI, BPTI |
| 3 | E, F, G, H (A, B) | CALCIUM ION | non-polymer | 40.1 | 4 | Chemie (CA) | |||
| 4 | I, J (I, J) | SULFATE ION | non-polymer | 96.1 | 2 | Chemie (SO4) | |||
| 5 | K, L, M, N (A, B, I, J) | water | water | 18.0 | 473 | Chemie (HOH) |
Sequence modifications
A, B: 16 - 244 (UniProt: Q52V24)
| PDB | External Database | Details |
|---|---|---|
| Val 59 | Ala 47 | conflict |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 |
| Total formula weight | 71976.4 | |
| Non-Polymers* | Number of molecules | 6 |
| Total formula weight | 352.4 | |
| All* | Total formula weight | 72328.8 |
