3UNT
tRNA-guanine transglycosylase E339Q mutant
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A | Queuine tRNA-ribosyltransferase | polymer | 388 | 43068.8 | 1 | UniProt (P28720) Pfam (PF01702) In PDB | Zymomonas mobilis | Guanine insertion enzyme, tRNA-guanine transglycosylase |
| 2 | A | ZINC ION | non-polymer | 65.4 | 1 | Chemie (ZN) | |||
| 3 | A | GLYCEROL | non-polymer | 92.1 | 3 | Chemie (GOL) | |||
| 4 | A | DIMETHYL SULFOXIDE | non-polymer | 78.1 | 1 | Chemie (DMS) | |||
| 5 | water | water | 18.0 | 399 | Chemie (HOH) |
Sequence modifications
A: 1 - 386 (UniProt: P28720)
| PDB | External Database | Details |
|---|---|---|
| Gly -1 | - | expression tag |
| Ser 0 | - | expression tag |
| Lys 312 | Thr 312 | SEE REMARK 999 |
| Gln 339 | Glu 339 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 43068.8 | |
| Non-Polymers* | Number of molecules | 5 |
| Total formula weight | 419.8 | |
| All* | Total formula weight | 43488.7 |
