N-acetylmuramic acid 6-phosphate etherase (, MurNAc-6-P etherase, MurQ) is an enzyme with systematic name (R)-lactate hydro-lyase (adding N-acetyl-D-glucosamine 6-phosphate; N-acetylmuramate 6-phosphate-forming). This enzyme catalyses the following chemical reaction
This enzyme is required for the utilization of anhydro-N-acetylmuramic acid in some Pseudomonadota.