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6.1.1.26: pyrrolysine-tRNAPyl ligase

This is an abbreviated version!
For detailed information about pyrrolysine-tRNAPyl ligase, go to the full flat file.

Word Map on EC 6.1.1.26

Reaction

ATP
+
L-pyrrolysine
+
tRNAPyl
=
AMP
+
diphosphate
+
L-pyrrolysyl-tRNAPyl

Synonyms

class II aminoacyl-tRNA synthetase, DhaPylSc, LysZ-RS, More, PylRS, PylS, PylSc, PylSn, pyrrolysyl-tRNA synthetase

ECTree

     6 Ligases
         6.1 Forming carbon-oxygen bonds
             6.1.1 Ligases forming aminoacyl-tRNA and related compounds
                6.1.1.26 pyrrolysine-tRNAPyl ligase

Systematic Name

Systematic Name on EC 6.1.1.26 - pyrrolysine-tRNAPyl ligase

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SYSTEMATIC NAME
IUBMB Comments
L-pyrrolysine:tRNAPyl ligase (AMP-forming)
In organisms such as Methanosarcina barkeri that incorporate the modified amino acid pyrrolysine (Pyl) into certain methylamine methyltransferases, an unusual tRNAPyl, with a CUA anticodon, can be charged directly with pyrrolysine by this class II aminoacyl---tRNA ligase. The enzyme is specific for pyrrolysine as substrate as it cannot be replaced by lysine or any of the other natural amino acids [1].