3BLK
Role of aromatic residues in starch binding
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A | Alpha-amylase 1 | polymer | 496 | 55840.1 | 1 | UniProt (P04745) Pfam (PF00128) Pfam (PF02806) UniProt (by SIFTS) (P0DUB6) In PDB | Homo sapiens (Human) | 1,4-alpha-D-glucan glucanohydrolase 1, Salivary alpha-amylase |
| 2 | B, C | 4-amino-4,6-dideoxy-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose | branched | 325.3 | 2 | In PDB GlyTouCan (G90989WB) | |||
| 3 | A | CALCIUM ION | non-polymer | 40.1 | 1 | Chemie (CA) | |||
| 4 | A | CHLORIDE ION | non-polymer | 35.5 | 1 | Chemie (CL) | |||
| 5 | A | 5-HYDROXYMETHYL-CHONDURITOL | non-polymer | 176.2 | 1 | Chemie (HMC) | |||
| 6 | water | water | 18.0 | 188 | Chemie (HOH) |
Sequence modifications
A: 1 - 496 (UniProt: P04745)
| PDB | External Database | Details |
|---|---|---|
| Ala 316 | Trp 331 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 55840.1 | |
| Branched | Number of molecules | 2 |
| Total formula weight | 650.6 | |
| Non-Polymers* | Number of molecules | 3 |
| Total formula weight | 251.7 | |
| All* | Total formula weight | 56742.4 |
