The function of Ensembl gene identifier ENSG00000104774 (MAN2B1, mannosidase alpha class 2B member 1) is as follows. Can hydrolyze a variety of glycan substrates containing terminal alpha-mannosidic linkages. Cleaves alpha 1,2-, alpha 1,3-, and alpha 1,6-linked mannose residues on oligosaccharides generated by N- glycoprotein degradation pathways. {ECO:0000269|PubMed:11350179, ECO:0000269|PubMed:16115860}.