Histidine–tRNA ligase
| Histidine–tRNA ligase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 6.1.1.21 | ||||||||
| CAS no. | 9068-78-4 | ||||||||
| Alt. names | histidyl tRNA synthetase, Jo-1 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
In enzymology, a histidine–tRNA ligase (EC 6.1.1.21) is an enzyme that catalyzes the chemical reaction
- ATP + L-histidine + tRNAHis AMP + diphosphate + L-histidyl-tRNAHis
The 3 substrates of this enzyme are ATP, L-histidine, and tRNAHis, whereas its 3 products are AMP, diphosphate, and L-histidyl-tRNAHis.
This enzyme participates in histidine metabolism and aminoacyl-tRNA biosynthesis.