:Mannosylglycerate hydrolase

{{Infobox enzyme

| Name = Mannosylglycerate hydrolase

| EC_number = 3.2.1.170

| CAS_number =

| GO_code =

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Mannosylglycerate hydrolase ({{EC number|3.2.1.170}}, 2-O-(6-phospho-mannosyl)-D-glycerate hydrolase, alpha-mannosidase, mngB (gene)) is an enzyme with systematic name 2-O-(6-phospho-alpha-D-mannosyl)-D-glycerate acylhydrolase.{{cite journal | vauthors = Sampaio MM, Chevance F, Dippel R, Eppler T, Schlegel A, Boos W, Lu YJ, Rock CO | title = Phosphotransferase-mediated transport of the osmolyte 2-O-alpha-mannosyl-D-glycerate in Escherichia coli occurs by the product of the mngA (hrsA) gene and is regulated by the mngR (farR) gene product acting as repressor | journal = The Journal of Biological Chemistry | volume = 279 | issue = 7 | pages = 5537–48 | date = February 2004 | pmid = 14645248 | doi = 10.1074/jbc.m310980200 | doi-access = free }} This enzyme catalyses the following chemical reaction

: 2-O-(6-phospho-alpha-D-mannosyl)-D-glycerate + H₂O $\backslash rightleftharpoons$ D-mannose 6-phosphate + D-glycerate

The enzyme participates in the mannosylglycerate degradation pathway of some bacteria.