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6.5.1.B3: 2'-5' RNA ligase (GTP-activated)

This is an abbreviated version!
For detailed information about 2'-5' RNA ligase (GTP-activated), go to the full flat file.

Word Map on EC 6.5.1.B3

Reaction

a 3'-half-tRNA molecule with a 5'-OH end
+
a 5'-half-tRNA molecule with a 2',3'-cyclic phosphate end
=
a mature tRNA molecule containing a 2'-5'-phosphodiester bond

Synonyms

GTP-dependent RNA ligase, PF0027, PH0099

ECTree

     6 Ligases
         6.5 Forming phosphoric-ester bonds
             6.5.1 Ligases that form phosphoric-ester bonds (only sub-subclass identified to date)
                6.5.1.B3 2'-5' RNA ligase (GTP-activated)

Activating Compound

Activating Compound on EC 6.5.1.B3 - 2'-5' RNA ligase (GTP-activated)

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ACTIVATING COMPOUND
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
GTP
the activity is dependent on GTP. The GTP structure is important but GTP hydrolysis is not required for the reaction, and GTPgammaS enhances the tRNA ligation activity. GTP is specific and indispensable for the tRNA ligation reaction. ATP, CTP, UTP, dATP, and dGTP cannot substitute for GTP. Neither GDP nor GMP enhance the ligation activity