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ENZYME entry: EC 220.127.116.11
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|Histidine tRNA guanylyltransferase.|
|p-tRNA(His) + ATP + GTP <=> pppG-P-tRNA(His) + AMP + diphosphate|
- In eukarya an additional guanosine residue is added post-
transcriptionally to the 5'-end of tRNA(His) molecules.
- The addition occurs opposite a universally conserved adenosine(73)
and is thus the result of a non-templated 3'-5' addition reaction.
- The additional guanosine residue is an important determinant for
aminoacylation by EC 18.104.22.168.
- The enzyme requires a divalent cation for activity.
- ATP activation is not required when the substrate contains a
|PRIAM enzyme-specific profiles||22.214.171.124|
|KEGG Ligand Database for Enzyme Nomenclature||126.96.36.199|
|IUBMB Enzyme Nomenclature||188.8.131.52|
|MEDLINE||Find literature relating to 184.108.40.206|
|F4IRQ5, THG1_ARATH; ||Q75DJ3, THG1_ASHGO; ||Q05B50, THG1_BOVIN; |
|Q6FPX3, THG1_CANGA; ||Q6BKD4, THG1_DEBHA; ||Q54E29, THG1_DICDI; |
|Q9V3N8, THG1_DROME; ||Q9NWX6, THG1_HUMAN; ||Q6CW75, THG1_KLULA; |
|Q9CY52, THG1_MOUSE; ||Q7SDM8, THG1_NEUCR; ||Q5M965, THG1_RAT; |
|Q9Y7T3, THG1_SCHPO; ||P53215, THG1_YEAST; ||F4ISV6, THG2_ARATH; |
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entries corresponding to 2.7.7.-
entries corresponding to 2.7.-.-
entries corresponding to 2.-.-.-