YGR199W PMT6 SGDID:S000003431, Chr VII from 897502-899781, Genome Release 64-1-1, Verified ORF, "Protein O-mannosyltransferase, transfers mannose from dolichyl phosphate-D-mannose to protein serine/threonine residues of secretory proteins; reaction is essential for cell wall rigidity; member of a family of mannosyltransferases"