1P6W
Crystal structure of barley alpha-amylase isozyme 1 (AMY1) in complex with the substrate analogue, methyl 4I,4II,4III-tri-thiomaltotetraoside (thio-DP4)
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A | PROTEIN (Alpha-amylase type A isozyme) | polymer | 405 | 44640.1 | 1 | UniProt (P00693) Pfam (PF00128) Pfam (PF07821) In PDB | Hordeum vulgare | 1,4-alpha-D-glucan glucanohydrolase, AMY1, Low pI alpha-amylase |
| 2 | B | beta-D-glucopyranose-(1-4)-4-thio-beta-D-glucopyranose-(1-4)-4-thio-beta-D-glucopyranose-(1-4)-methyl 4-thio-beta-D-glucopyranoside | branched | 728.8 | 1 | In PDB GlyTouCan (G75417ZK) | |||
| 3 | C, D | alpha-D-glucopyranose-(1-4)-4-thio-beta-D-glucopyranose | branched | 358.4 | 2 | In PDB GlyTouCan (G09196LL) | |||
| 4 | A | CALCIUM ION | non-polymer | 40.1 | 4 | Chemie (CA) | |||
| 5 | water | water | 18.0 | 641 | Chemie (HOH) |
Sequence modifications
A: 1 - 405 (UniProt: P00693)
| PDB | External Database | Details |
|---|---|---|
| Val 284 | Ala 308 | SEE REMARK 999 |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 44640.1 | |
| Branched | Number of molecules | 3 |
| Total formula weight | 1445.5 | |
| Non-Polymers* | Number of molecules | 4 |
| Total formula weight | 160.3 | |
| All* | Total formula weight | 46245.9 |
