GDP-beta-L-colitose + NAD(+) <=> GDP-4-dehydro-3,6-dideoxy-alpha-D-mannose + NADH + H(+)
gdp-beta-l-colitose + nad(+) <=> gdp-4-dehydro-3,6-dideoxy-alpha-d-mannose + nadh + h(+)
GDP-beta-L-colitose + NAD(+) <=> GDP-4-dehydro-3,6-dideoxy-alpha-D-mannose + NADH + H(+)
gdp-beta-l-colitose + nad(+) <=> gdp-4-dehydro-3,6-dideoxy-alpha-d-mannose + nadh + h(+)