label: a mannosylinositol-1-phosphophytoceramide + GDP + H(+) => an inositol-1-phosphophytoceramide + GDP-alpha-D-mannose
label_lc: a mannosylinositol-1-phosphophytoceramide + gdp + h(+) => an inositol-1-phosphophytoceramide + gdp-alpha-d-mannose