Accepted name: anhydro-N-acetylmuramic acid kinase
Reaction: ATP + 1,6-anhydro-N-acetyl-β-muramate + H2O = ADP + N-acetylmuramate 6-phosphate
Other name(s): anhMurNAc kinase; AnmK
Systematic name: ATP:1,6-anhydro-N-acetyl-β-muramate 6-phosphotransferase
Comments: This enzyme, along with EC 4.2.1.126, N-acetylmuramic acid 6-phosphate etherase, is required for the utilization of anhydro-N-acetylmuramic acid in proteobacteria. The substrate is either imported from the medium or derived from the bacterium's own cell wall murein during cell wall recycling. The product N-acetylmuramate 6-phosphate is produced as a 7:1 mixture of the α- and β-anomers.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number:
References:
1. Uehara, T., Suefuji, K., Valbuena, N., Meehan, B., Donegan, M. and Park, J.T. Recycling of the anhydro-N-acetylmuramic acid derived from cell wall murein involves a two-step conversion to N-acetylglucosamine-phosphate. J. Bacteriol. 187 (2005) 3643-3649. [PMID: 15901686]
2. Uehara, T., Suefuji, K., Jaeger, T., Mayer, C. and Park, J.T. MurQ etherase is required by Escherichia coli in order to metabolize anhydro-N-acetylmuramic acid obtained either from the environment or from its own cell wall. J. Bacteriol. 188 (2006) 1660-1662. [PMID: 16452451]
3. Bacik, J.P., Whitworth, G.E., Stubbs, K.A., Yadav, A.K., Martin, D.R., Bailey-Elkin, B.A., Vocadlo, D.J. and Mark, B.L. Molecular basis of 1,6-anhydro bond cleavage and phosphoryl transfer by Pseudomonas aeruginosa 1,6-anhydro-N-acetylmuramic acid kinase. J. Biol. Chem. 286 (2011) 12283-12291. [PMID: 21288904]