Information on EC - dolichyl-P-Man:Man8GlcNAc2-PP-dolichol alpha-1,2-mannosyltransferase

for references in articles please use BRENDA:EC2.4.1.261
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IUBMB Comments
The formation of N-glycosidic linkages of glycoproteins involves the ordered assembly of the common Glc3Man9GlcNAc2 core-oligosaccharide on the lipid carrier dolichyl diphosphate. Early mannosylation steps occur on the cytoplasmic side of the endoplasmic reticulum with GDP-Man as donor, the final reactions from Man5GlcNAc2-PP-Dol to Man9Glc-NAc2-PP-Dol on the lumenal side use dolichyl beta-D-mannosyl phosphate. ALG9 mannosyltransferase catalyses the addition of two different alpha-1,2-mannose residues: the addition of alpha-1,2-mannose to Man6GlcNAc2-PP-Dol (EC and the addition of alpha-1,2-mannose to Man8GlcNAc2-PP-Dol (EC
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The enzyme appears in viruses and cellular organisms
ALG9, ALG9 alpha1,2 mannosyltransferase, ALG9 mannosyltransferase, dolichylphosphomannose-dependent ALG9 mannosyltransferase, EBS3, more
dolichyl beta-D-mannosyl phosphate + alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->6)]-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-alpha-D-GlcNAc-diphosphodolichol = alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->2)-alpha-D-Man-(1->6)]-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-alpha-D-GlcNAc-diphosphodolichol + dolichyl phosphate
show the reaction diagram
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