In enzymology, an UDP-N-acetylmuramoylpentapeptide-lysine N6-alanyltransferase (EC 2.3.2.10) is an enzyme that catalyzes the chemical reaction
| UDP-N-acetylmuramoylpentapeptide-lysine N6-alanyltransferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 2.3.2.10 | ||||||||
| CAS no. | 37257-26-4 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
- L-alanyl-tRNA + UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-L-lysyl-D-alanyl-D-alanine tRNA + UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-N6-(L-alanyl)-L-lysyl-D- alanyl-D-alanine
Thus, the two substrates of this enzyme are L-alanyl-tRNA and UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-L-lysyl-D-alanyl-D-alanine, whereas its 3 products are tRNA, UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-N6-(L-alanyl)-L-lysyl-D-, and alanyl-D-alanine.
This enzyme belongs to the family of transferases, specifically the aminoacyltransferases. The systematic name of this enzyme class is L-alanyl-tRNA:UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-L-lysyl-D-ala nyl-D-alanine N6-alanyltransferase. Other names in common use include alanyl-transfer ribonucleate-uridine, diphosphoacetylmuramoylpentapeptide transferase, UDP-N-acetylmuramoylpentapeptide lysine N6-alanyltransferase, uridine diphosphoacetylmuramoylpentapeptide lysine, N6-alanyltransferase, L-alanyl-tRNA:UDP-N-acetylmuramoyl-L-alanyl-D-glutamyl-L-lysyl-D-, and alanyl-D-alanine 6-N-alanyltransferase. This enzyme participates in peptidoglycan biosynthesis.
Structural studies
editAs of late 2007, 4 structures have been solved for this class of enzymes, with PDB accession codes 1P4N, 1XE4, 1XF8, and 1XIX.
References
edit- Plapp R, Strominger JL (1970). "Biosynthesis of the peptidoglycan of bacterial cell walls. 18 Purification and properties of L-alanyl transfer ribonucleic acid-uridine diphosphate-N-acetylmuramyl-pentapeptide transferase from Lactobacillus viridescens". J. Biol. Chem. 245 (14): 3675–82. doi:10.1016/S0021-9258(18)62979-5. PMID 4248527.
