L-amino-acid alpha-ligase

In enzymology, an L-amino-acid alpha-ligase (EC 6.3.2.28) is an enzyme that catalyzes the chemical reaction

L-amino-acid alpha-ligase
Identifiers
EC no.	6.3.2.28
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Search PMC articles PubMed articles NCBI proteins

ATP + an L-amino acid + an L-amino acid ${\displaystyle \rightleftharpoons }$ ADP + phosphate + L-aminoacyl-L-amino acid

Thus, the two substrates of this enzyme are ATP and L-amino acid, whereas its 3 products are ADP, phosphate, and L-aminoacyl-L-amino acid.

This enzyme belongs to the family of ligases, specifically those forming carbon-nitrogen bonds as acid-D-amino-acid ligases (peptide synthases). The systematic name of this enzyme class is L-amino acid:L-amino acid ligase (ADP-forming). Other names in common use include L-amino acid alpha-ligase, bacilysin synthetase, YwfE, and L-amino acid ligase.

References

• Tabata K, Ikeda H, Hashimoto S (2005). "ywfE in Bacillus subtilis codes for a novel enzyme, L-amino acid ligase". J. Bacteriol. 187 (15): 5195–202. doi:10.1128/JB.187.15.5195-5202.2005. PMC 1196041. PMID 16030213.