CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
3 | Alpha Beta |
|
3.40 | 3-Layer(aba) Sandwich |
|
3.40.50 | Rossmann fold |
|
3.40.50.620 | HUPs |
Domain Context
CATH Clusters
| Superfamily | HUPs |
| Functional Family | GMP synthase [glutamine-hydrolyzing] subunit B |
Enzyme Information
| 6.3.5.2 |
GMP synthase (glutamine-hydrolyzing).
based on mapping to UniProt O59072
ATP + XMP + L-glutamine + H(2)O = AMP + diphosphate + GMP + L-glutamate.
-!- Involved in the de novo biosynthesis of guanosine nucleotides. -!- An N-terminal glutaminase domain binds L-glutamine and generates ammonia, which is transferred by a substrate-protective tunnel to the ATP-pyrophosphatase domain. -!- The enzyme can catalyze the second reaction alone in the presence of ammonia. -!- Formerly EC 6.3.4.1.
|
UniProtKB Entries (1)
| O59072 |
GUAAB_PYRHO
Pyrococcus horikoshii OT3
GMP synthase [glutamine-hydrolyzing] subunit B
|
PDB Structure
| PDB | 3A4I |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | |
| Primary Citation |
Crystal structure of the ATPPase subunit and its substrate-dependent association with the GATase Subunit: a novel regulatory mechanism for a two-subunit-type GMP synthetase from Pyrococcus horikoshii OT3.
J.Mol.Biol.
|