GDP-beta-L-colitose + NADP(+) = GDP-4-dehydro-3,6-dideoxy-alpha-D-mannose + NADPH + H(+)
gdp-beta-l-colitose + nadp(+) = gdp-4-dehydro-3,6-dideoxy-alpha-d-mannose + nadph + h(+)
GDP-beta-L-colitose + NADP(+) = GDP-4-dehydro-3,6-dideoxy-alpha-D-mannose + NADPH + H(+)
gdp-beta-l-colitose + nadp(+) = gdp-4-dehydro-3,6-dideoxy-alpha-d-mannose + nadph + h(+)