2G81
Crystal Structure of the Bowman-Birk Inhibitor from Vigna unguiculata Seeds in Complex with Beta-trypsin at 1.55 Angstrons Resolution
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 (cattle) | Beta-Trypsin |
| 2 | B (I) | Bowman-Birk type seed trypsin and chymotrypsin inhibitor | polymer | 83 | 9147.0 | 1 | UniProt (P17734) Pfam (PF00228) UniProt (by SIFTS) (Q9S9H8) | Vigna unguiculata (cowpea) | BTCI |
| 3 | C (E) | CALCIUM ION | non-polymer | 40.1 | 1 | Chemie (CA) | |||
| 4 | D, E, F, G (E) | SULFATE ION | non-polymer | 96.1 | 4 | Chemie (SO4) | |||
| 5 | H (E) | TRIETHYLENE GLYCOL | non-polymer | 150.2 | 1 | Chemie (PGE) | |||
| 6 | I (E) | 1,2-ETHANEDIOL | non-polymer | 62.1 | 1 | Chemie (EDO) | |||
| 7 | J, K (E) | ACETIC ACID | non-polymer | 60.1 | 2 | Chemie (ACY) | |||
| 8 | L (I) | HEXAETHYLENE GLYCOL | non-polymer | 282.3 | 1 | Chemie (P6G) | |||
| 9 | M, N (E, I) | water | water | 18.0 | 323 | Chemie (HOH) |
Sequence modifications
I: 1 - 83 (UniProt: P17734)
| PDB | External Database | Details |
|---|---|---|
| Asp 20 | Arg 20 | SEE REMARK 999 |
| Arg 21 | Glu 21 | SEE REMARK 999 |
| Glu 23 | Ala 23 | SEE REMARK 999 |
| Asp 36 | Glu 36 | SEE REMARK 999 |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 32471.3 | |
| Non-Polymers* | Number of molecules | 10 |
| Total formula weight | 1039.0 | |
| All* | Total formula weight | 33510.3 |
