EC number 6.1.1.10 IntEnz IntEnz view ExPASy NiceZyme view | CAS number 9033-22-1 BRENDA BRENDA entry KEGG KEGG entry | |
In enzymology, a methionine-tRNA ligase (EC 6.1.1.10) is an enzyme that catalyzes the chemical reaction
ATP + L-methionine + tRNAMetThe 3 substrates of this enzyme are ATP, L-methionine, and tRNA(Met), whereas its 3 products are AMP, diphosphate, and L-methionyl-tRNA(Met).
This enzyme belongs to the family of ligases, to be specific those forming carbon-oxygen bonds in aminoacyl-tRNA and related compounds. The systematic name of this enzyme class is L-methionine:tRNAMet ligase (AMP-forming). Other names in common use include methionyl-tRNA synthetase, methionyl-transfer ribonucleic acid synthetase, methionyl-transfer ribonucleate synthetase, methionyl-transfer RNA synthetase, methionine translase, and MetRS. This enzyme participates in 3 metabolic pathways: methionine metabolism, selenoamino acid metabolism, and aminoacyl-trna biosynthesis.
Structural studies
As of late 2007, 21 structures have been solved for this class of enzymes, with PDB accession codes 1A8H, 1F4L, 1MEA, 1MED, 1MKH, 1P7P, 1PFU, 1PFV, 1PFW, 1PFY, 1PG0, 1PG2, 1QQT, 1RQG, 1WOY, 2CSX, 2CT8, 2D54, 2D5B, 2DJV, and 2HSN.