3BLP
Role of aromatic residues in human salivary alpha-amylase
Entity
Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
1 | X | 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 | A, B | 4-amino-4,6-dideoxy-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose | branched | 325.3 | 2 | In PDB GlyTouCan (G90989WB) | |||
3 | X | CALCIUM ION | non-polymer | 40.1 | 1 | Chemie (CA) | |||
4 | X | CHLORIDE ION | non-polymer | 35.5 | 1 | Chemie (CL) | |||
5 | X | 5-HYDROXYMETHYL-CHONDURITOL | non-polymer | 176.2 | 1 | Chemie (HMC) | |||
6 | water | water | 18.0 | 323 | Chemie (HOH) |
Sequence modifications
X: 1 - 496 (UniProt: P04745)
PDB | External Database | Details |
---|---|---|
Ala 388 | Trp 403 | 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 |