label: a 2-O-(alpha-D-mannosyl)-6-O-(6-O-acyl-alpha-D-mannosyl)-1-phosphatidyl-1D-myo-inositol + GDP + H(+) => a 1,2-diacyl-sn-glycero-3-phospho-[alpha-D-6-acyl-mannopyranosyl-(1<->6)-D-myo-inositol] + GDP-alpha-D-mannose
label_lc: a 2-o-(alpha-d-mannosyl)-6-o-(6-o-acyl-alpha-d-mannosyl)-1-phosphatidyl-1d-myo-inositol + gdp + h(+) => a 1,2-diacyl-sn-glycero-3-phospho-[alpha-d-6-acyl-mannopyranosyl-(1<->6)-d-myo-inositol] + gdp-alpha-d-mannose