DPM_DPG-synthase_like is a member of the Glycosyltransferase 2 superfamily. DPM1 is the catalytic subunit of eukaryotic dolichol-phosphate mannose (DPM) synthase. DPM synthase is required for synthesis of the glycosylphosphatidylinositol (GPI) anchor, N-glycan precursor, protein O-mannose, and C-mannose. In higher eukaryotes,the enzyme has three subunits, DPM1, DPM2 and DPM3. DPM is synthesized from dolichol phosphate and GDP-Man on the cytosolic surface of the ER membrane by DPM synthase and then is flipped onto the luminal side and used as a donor substrate. In lower eukaryotes, such as Saccharomyces cerevisiae and Trypanosoma brucei, DPM synthase consists of a single component (Dpm1p and TbDpm1, respectively) that possesses one predicted transmembrane region near the C terminus for anchoring to the ER membrane. In contrast, the Dpm1 homologues of higher eukaryotes, namely fission yeast, fungi, and animals, have no transmembrane region, suggesting the existence of adapter molecules for membrane anchoring. This family also includes bacteria and archaea DPM1_like enzymes. However, the enzyme structure and mechanism of function are not well understood. The UDP-glucose:dolichyl-phosphate glucosyltransferase (DPG_synthase) is a transmembrane-bound enzyme of the endoplasmic reticulum involved in protein N-linked glycosylation. This enzyme catalyzes the transfer of glucose from UDP-glucose to dolichyl phosphate. This protein family belongs to Glycosyltransferase 2 superfamily.

Exopolysaccharide biosynthesis protein related to N-acetylglucosamine-1-phosphodiester alpha-N-acety... [Carbohydrate transport and metabolism].

Phosphodiester glycosidase. This is a family conserved from bacteria to humans. The structure of a member from Bacteroides has been crystallized and modelled onto the luminal region of the human member of the family, the transmembrane glycoprotein N-acetylglucosamine-1-phosphodiester alpha-N-acetylglucosaminidase. There is some conservation of potentially functional residues, implying that in the bacterial members this family acts in some way as a phosphodiester glycosidase. The human protein is also present, so the eukaryotic members are likely to be catalyzing the second step in the formation of the mannose 6-phosphate targeting signal on lysosomal enzyme oligosaccharides.

Glycosyltransferase involved in cell wall bisynthesis [Cell wall/membrane/envelope biogenesis].

DPG_synthase is involved in protein N-linked glycosylation. UDP-glucose:dolichyl-phosphate glucosyltransferase (DPG_synthase) is a transmembrane-bound enzyme of the endoplasmic reticulum involved in protein N-linked glycosylation. This enzyme catalyzes the transfer of glucose from UDP-glucose to dolichyl phosphate.

Uncharacterized protein MJ1222 OS=Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440) OX=243232 GN=MJ1222 PE=4 SV=1

UDP-N-acetylglucosamine--dolichyl-phosphate N-acetylglucosaminyltransferase OS=Methanococcus voltae OX=2188 GN=aglK PE=1 SV=1

SPbeta prophage-derived uncharacterized protein YomE OS=Bacillus subtilis (strain 168) OX=224308 GN=yomE PE=4 SV=1