label: an alpha-D-mannosyl-(1<->6)-1D-myo-inositol-1-phospho-N-(2-hydroxy-very-long-chain fatty acyl)-(R)-4-hydroxysphingoid base + GDP + H(+) => an inositol-1-phospho-N-(2-hydroxy-very-long-chain fatty acyl)-4R-hydroxysphingoid base + GDP-alpha-D-mannose
label_lc: an alpha-d-mannosyl-(1<->6)-1d-myo-inositol-1-phospho-n-(2-hydroxy-very-long-chain fatty acyl)-(r)-4-hydroxysphingoid base + gdp + h(+) => an inositol-1-phospho-n-(2-hydroxy-very-long-chain fatty acyl)-4r-hydroxysphingoid base + gdp-alpha-d-mannose