label: GDP-4-dehydro-D-rhamnose reductase activity
label_lc: gdp-4-dehydro-d-rhamnose reductase activity
description: "Catalysis of the reaction: GDP-6-deoxy-D-mannose + NAD(P)+ = GDP-4-dehydro-6-deoxy-D-mannose + NAD(P)H + H+. In the reverse reaction, a mixture of GDP-D-rhamnose and its C-4 epimer is formed."