1QK5
TOXOPLASMA GONDII HYPOXANTHINE-GUANINE PHOSPHORIBOSYLTRANSFERASE WITH XMP, PYROPHOSPHATE AND TWO MG2+ IONS
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B (A, B) | HYPOXANTHINE-GUANINE PHOSPHORIBOSYLTRANSFERASE | polymer | 233 | 26661.5 | 2 | UniProt (Q26997) Pfam (PF00156) | TOXOPLASMA GONDII | HGPRTASE |
| 2 | C, G (A, B) | XANTHOSINE-5'-MONOPHOSPHATE | non-polymer | 365.2 | 2 | Chemie (XMP) | |||
| 3 | D, H (A, B) | PYROPHOSPHATE 2- | non-polymer | 176.0 | 2 | Chemie (POP) | |||
| 4 | E, F, I, J (A, B) | MAGNESIUM ION | non-polymer | 24.3 | 4 | Chemie (MG) | |||
| 5 | K, L (A, B) | water | water | 18.0 | 182 | Chemie (HOH) |
Sequence modifications
A, B: 1 - 230 (UniProt: Q26997)
| PDB | External Database | Details |
|---|---|---|
| Gly 0 | - | cloning artifact |
| Ser 0 | - | cloning artifact |
| His 0 | - | cloning artifact |
| Ala 150 | Asp 150 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 53323.0 | |
| Non-Polymers* | Number of molecules | 8 |
| Total formula weight | 1179.6 | |
| All* | Total formula weight | 54502.5 |
