Catalysis of the reaction: dolichyl phosphate D-mannose + protein = dolichyl phosphate + O-D-mannosylprotein.
Comment:
Note that this activity has never been observed in green plants. However, N- and C-mannosylation may occur in these species; see figure 1 in PMID:21558543.
Synonyms:
exact_synonym:
dolichyl-phosphate-mannose-protein O-mannosyltransferase activity; protein O-mannosyltransferase activity
broad_synonym:
O-glycoside mannosyltransferase
related_synonym:
dolichol phosphomannose-protein mannosyltransferase activity; dolichyl-phosphate-D-mannose:protein O-D-mannosyltransferase activity; protein O-D-mannosyltransferase activity
xref:
EC:2.4.1.109; MetaCyc:2.4.1.109-RXN; Reactome:R-HSA-5615556 "Defective POMT2 does not transfer Man from Dol-P-Man to DAG1"; Reactome:R-HSA-5615604 "Defective POMT1 does not transfer Man from Dol-P-Man to DAG1"; reactome:R-HSA-5615637 "POMT1:POMT2 transfers Man from Dol-P-Man to DAG1(30-653)"