6W1I
Re-interpretation of ppGpp (G4P) electron density in the deposited crystal structure of Xanthine phosphoribosyltransferase (XPRT) (1Y0B).
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) | Xanthine phosphoribosyltransferase | polymer | 197 | 21477.1 | 4 | UniProt (P42085) Pfam (PF00156) | Bacillus subtilis (strain 168) | XPRTase |
| 2 | E, F, H, I, K... (A, B, C, D) | SODIUM ION | non-polymer | 23.0 | 8 | Chemie (NA) | |||
| 3 | G, J, M, P (A, B, C, D) | GUANOSINE-5',3'-TETRAPHOSPHATE | non-polymer | 603.2 | 4 | Chemie (G4P) | |||
| 4 | Q, R, S, T (A, B, C, D) | water | water | 18.0 | 749 | Chemie (HOH) |
Sequence modifications
A, B, C, D: 2 - 194 (UniProt: P42085)
| PDB | External Database | Details |
|---|---|---|
| Ser -2 | - | expression tag |
| Asn -1 | - | expression tag |
| Ala 0 | - | expression tag |
| Mse 1 | - | expression tag |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 |
| Total formula weight | 85908.4 | |
| Non-Polymers* | Number of molecules | 12 |
| Total formula weight | 2596.6 | |
| All* | Total formula weight | 88504.9 |
