3P4G
X-ray crystal structure of a hyperactive, Ca2+-dependent, beta-helical antifreeze protein from an Antarctic bacterium
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B, C, D (A, B, C, D) | Antifreeze protein | polymer | 323 | 33358.7 | 4 | UniProt (A1YIY3) Pfam (PF18815) | Marinomonas primoryensis | |
| 2 | AA, AB, BA, BB, CA... (B, D, A, C) | CALCIUM ION | non-polymer | 40.1 | 52 | Chemie (CA) | |||
| 3 | HA, R, S, T (B, A) | MAGNESIUM ION | non-polymer | 24.3 | 4 | Chemie (MG) | |||
| 4 | IA, WA (B, C) | ACETATE ION | non-polymer | 59.0 | 2 | Chemie (ACT) | |||
| 5 | KB, LB, MB, NB (A, B, C, D) | water | water | 18.0 | 1133 | Chemie (HOH) |
Sequence modifications
A, B, C, D: 2 - 323 (UniProt: A1YIY3)
| PDB | External Database | Details |
|---|---|---|
| Met 1 | - | initiating methionine |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 |
| Total formula weight | 133434.9 | |
| Non-Polymers* | Number of molecules | 58 |
| Total formula weight | 2299.4 | |
| All* | Total formula weight | 135734.2 |
