D-aspartatna ligaza

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D-aspartatna ligaza
Identifikatori
EC broj 6.3.1.12
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB RCSB PDB PDBe PDBj PDBsum

D-aspartatna ligaza (EC 6.3.1.12, Aslfm, UDP-MurNAc-pentapeptid:D-aspartat ligaza, D-aspartinska kiselina-aktivirajući enzim) je enzim sa sistematskim imenom D-aspartat:(beta-GlcNAc-(1->4)-Mur2Ac(oil-L-Ala-gama-D-Glu-L-Lis-D-Ala-D-Ala))n ligaza (formira ADP).[1][2][3][4] Ovaj enzim katalizuje sledeću hemijsku reakciju

ATP + D-aspartat + [beta-GlcNAc-(1->4)-Mur2Ac(oil-L-Ala-gama-D-Glu-L-Lys-D-Ala-D-Ala)]n [beta-GlcNAc-(1->4)-Mur2Ac(oil-L-Ala-gama-D-Glu-6-N-(beta-D-Asp)-L-Lys-D-Ala-D-Ala)]n + ADP + fosfat

Ovaj enzim formira deo puta peptidoglikanskog formiranja kod Gram-pozitivnih bakterija.

Reference[uredi | uredi kod]

  1. Staudenbauer, W. and Strominger, J.L. (1972). „Activation of D-aspartic acid for incorporation into peptidoglycan”. J. Biol. Chem. 247: 5095-5102. PMID 4262567. 
  2. Staudenbauer, W., Willoughby, E. and Strominger, J.L. (1972). „Further studies of the D-aspartic acid-activating enzyme of Streptococcus faecalis and its attachment to the membrane”. J. Biol. Chem. 247: 5289-5296. PMID 4626717. 
  3. Galperin, M.Y. and Koonin, E.V. (1997). „A diverse superfamily of enzymes with ATP-dependent carboxylate-amine/thiol ligase activity”. Protein Sci. 6: 2639-2643. PMID 9416615. 
  4. Bellais, S., Arthur, M., Dubost, L., Hugonnet, J.E., Gutmann, L., van Heijenoort, J., Legrand, R., Brouard, J.P., Rice, L. and Mainardi, J.L. (2006). „Aslfm, the D-aspartate ligase responsible for the addition of D-aspartic acid onto the peptidoglycan precursor of Enterococcus faecium”. J. Biol. Chem. 281: 11586-11594. PMID 16510449. 

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