| 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
AMP + diphosphate + L-histidyl-tRNAHisThe 3 substrates of this enzyme are ATP, L-histidine, and tRNA(His), whereas its 3 products are AMP, diphosphate, and L-histidyl-tRNA(His).
This enzyme participates in histidine metabolism and aminoacyl-trna biosynthesis.
Nomenclature
Histidine—tRNA ligase belongs to the family of ligase enzymes, specifically those forming carbon-oxygen bonds in aminoacyl-tRNA and related compounds. The systematic name of this enzyme class is L-histidine:tRNAHis ligase (AMP-forming). Other names in common use include histidyl-tRNA synthetase, histidyl-transfer ribonucleate synthetase, and histidine translase.
See also
References
- von Tigerstrom M, Tener GM (1967). "Histidyl transfer ribonucleic acid synthetase from bakers' yeast". Can. J. Biochem. 45 (7): 1067–74. doi:10.1139/o67-123. PMID 6035970.
| Enzymes: CO CS and CN ligases (EC 6.1-6.3) | |
|---|---|
| 6.1: Carbon-Oxygen | |
| 6.2: Carbon-Sulfur | |
| 6.3: Carbon-Nitrogen | |
| Enzymes | |
|---|---|
| Activity | |
| Regulation | |
| Classification | |
| Kinetics | |
| Types |
|
This ligase article is a stub. You can help Misplaced Pages by expanding it. |