GDP-Man:Man(1)GlcNAc(2)-PP-Dol alpha-1,3-mannosyltransferase activity
gdp-man:man(1)glcnac(2)-pp-dol alpha-1,3-mannosyltransferase activity
glycolipid 3-alpha-mannosyltransferase activity
glycolipid 3-alpha-mannosyltransferase activity