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6.1.1.15: proline-tRNA ligase

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

Word Map on EC 6.1.1.15

Reaction

ATP
+
L-proline
+
tRNAPro
=
AMP
+
diphosphate
+
L-prolyl-tRNAPro

Synonyms

bifunctional aminoacyl-tRNA synthetase, bifunctional glutamate/proline-tRNA ligase, class II prolyl-tRNA synthetase, class II ProRS, dual-specificity prolyl-cysteinyl-tRNA synthetase, dual-specificity prolyl-tRNA synthetase, EPRS, Global RNA synthesis factor, GluProRS, glutamyl-/prolyl-tRNA synthetase, glutamyl-prolyl tRNA synthetase, glutamyl-prolyl-tRNA synthetase, More, MSMEG_2621, Pro-tRNA synthetase, ProCysRS, Proline translase, Proline--tRNA ligase, proline/cysteine-tRNA ligase, Prolyl RNA synthetase, prolyl tRNA synthetase, prolyl-cysteinyl-tRNA synthetase, Prolyl-transfer ribonucleate synthetase, Prolyl-transfer ribonucleic acid synthetase, Prolyl-transfer RNA synthetase, Prolyl-tRNA synthetase, ProRS, ProRS-Cyt, ProRS-Org, ProRSTT, proS, PRS

ECTree

     6 Ligases
         6.1 Forming carbon-oxygen bonds
             6.1.1 Ligases forming aminoacyl-tRNA and related compounds
                6.1.1.15 proline-tRNA ligase

Turnover Number

Turnover Number on EC 6.1.1.15 - proline-tRNA ligase

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TURNOVER NUMBER [1/s]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
3.7 - 81
ATP
0.056 - 21
cis-4-hydroxyproline
0.11 - 3.52
L-alanine
0.003 - 0.8
L-cysteine
0.024 - 210
L-proline
15
trans-4-hydroxyproline
-
pH 7.0, 37°C, recombinant wild-type enzyme, amino acid activation
0.0091 - 10.8
tRNAPro
additional information
additional information
-
the rate of AMP formation of K279A ProRS in the presence of alanine is 0.034 s-1, which is at least 20 times faster than the rate of nonenzymatic hydrolysis
-