1.1.1.120 alpha-D-galactose + NADP+ 39% of the activity compared to alpha,beta-D-galactose and alpha,beta-L-arabinose 1.1.1.120 beta-D-galactose + NADP+ - 1.1.1.120 D-galactose + NADP+ - 1.1.1.120 D-galactose + NADP+ furanose form, beta-configuration