3BCD
Alpha-amylase B in complex with maltotetraose and alpha-cyclodextrin
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, catalytic region | polymer | 599 | 68580.9 | 1 | UniProt (Q2ADF2) Pfam (PF00128) Pfam (PF09154) UniProt (by SIFTS) (B8CZ54) In PDB | Halothermothrix orenii | amyb |
| 2 | B | alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-beta-D-glucopyranose | branched | 666.6 | 1 | In PDB GlyTouCan (G69211UR) | |||
| 3 | C | alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose | branched | 666.6 | 1 | In PDB BIRD (PRD_900010) GlyTouCan (G87171PZ) | alpha-maltotetraose | ||
| 4 | D | Cyclohexakis-(1-4)-(alpha-D-glucopyranose) | branched | 990.9 | 1 | In PDB BIRD (PRD_900015) GlyTouCan (G22307HL) | alpha-cyclodextrin | ||
| 5 | A | CALCIUM ION | non-polymer | 40.1 | 7 | Chemie (CA) | |||
| 6 | A | SODIUM ION | non-polymer | 23.0 | 1 | Chemie (NA) | |||
| 7 | water | water | 18.0 | 259 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 68580.9 | |
| Branched | Number of molecules | 3 |
| Total formula weight | 2324.0 | |
| Non-Polymers* | Number of molecules | 8 |
| Total formula weight | 303.5 | |
| All* | Total formula weight | 71208.5 |
