1PPI
THE ACTIVE CENTER OF A MAMMALIAN ALPHA-AMYLASE. THE STRUCTURE OF THE COMPLEX OF A PANCREATIC ALPHA-AMYLASE WITH A CARBOHYDRATE INHIBITOR REFINED TO 2.2 ANGSTROMS RESOLUTION
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | ALPHA-AMYLASE | polymer | 496 | 55435.8 | 1 | UniProt (P00690) Pfam (PF00128) Pfam (PF02806) | Sus scrofa (pig) | |
| 2 | B (B) | alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose | branched | 342.3 | 1 | BIRD (PRD_900001) | alpha-maltose | ||
| 3 | C (C) | 4,6-dideoxy-4-{[(1S,5R,6S)-3-formyl-5,6-dihydroxy-4-oxocyclohex-2-en-1-yl]amino}-alpha-D-xylo-hex-5-enopyranose-(1-4)-beta-D-glucopyranose | branched | 477.4 | 1 | ||||
| 4 | D (A) | CHLORIDE ION | non-polymer | 35.5 | 1 | Chemie (CL) | |||
| 5 | E (A) | CALCIUM ION | non-polymer | 40.1 | 1 | Chemie (CA) | |||
| 6 | F (A) | water | water | 18.0 | 393 | Chemie (HOH) |
Sequence modifications
A: 1 - 496 (UniProt: P00690)
| PDB | External Database | Details |
|---|---|---|
| Val 49 | Ile 49 | conflict |
| Lys 243 | Gln 243 | conflict |
| Ser 310 | Ala 310 | conflict |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 55435.8 | |
| Branched | Number of molecules | 2 |
| Total formula weight | 819.7 | |
| Non-Polymers* | Number of molecules | 2 |
| Total formula weight | 75.5 | |
| All* | Total formula weight | 56331.0 |
