1VKQ
A re-determination of the structure of the triple mutant (K53,56,120M) of phospholipase A2 at 1.6A resolution using sulphur-SAS at 1.54A wavelength
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | Phospholipase A2 | polymer | 123 | 13816.6 | 1 | UniProt (P00593) Pfam (PF00068) | Bos taurus (cattle) | Phosphatidylcholine 2-acylhydrolase, Group IB phospholipase A2 |
| 2 | B (A) | CALCIUM ION | non-polymer | 40.1 | 1 | Chemie (CA) | |||
| 3 | C (A) | CHLORIDE ION | non-polymer | 35.5 | 1 | Chemie (CL) | |||
| 4 | D, E, F (A) | (4S)-2-METHYL-2,4-PENTANEDIOL | non-polymer | 118.2 | 3 | Chemie (MPD) | |||
| 5 | G (A) | water | water | 18.0 | 165 | Chemie (HOH) |
Sequence modifications
A: 1 - 123 (UniProt: P00593)
| PDB | External Database | Details |
|---|---|---|
| Met 53 | Lys 75 | engineered mutation |
| Met 56 | Lys 78 | engineered mutation |
| Met 120 | Lys 142 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 13816.6 | |
| Non-Polymers* | Number of molecules | 5 |
| Total formula weight | 430.1 | |
| All* | Total formula weight | 14246.6 |
