1S18
Structure and protein design of human apyrase
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B | apyrase | polymer | 331 | 37042.2 | 2 | UniProt (Q8WVQ1) Pfam (PF06079) In PDB | Homo sapiens (human) | Ca2+-dependent endoplasmic reticulum nucleoside diphosphatase, soluble calcium-activated nucleotidase SCAN-1 |
| 2 | A, B | CALCIUM ION | non-polymer | 40.1 | 2 | Chemie (CA) | |||
| 3 | A, B | ACETATE ION | non-polymer | 59.0 | 4 | Chemie (ACT) | |||
| 4 | A, B | 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL | non-polymer | 122.1 | 7 | Chemie (TRS) | |||
| 5 | water | water | 18.0 | 525 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 74084.4 | |
| Non-Polymers* | Number of molecules | 13 |
| Total formula weight | 1171.3 | |
| All* | Total formula weight | 75255.7 |
