5.1.3.14 H213N 30fold increase in Km-value and 50fold decrease in turnover-number for UDP-N-acetyl-D-glucosamine. Unlike the wild-type enzyme no inhibition is detected at UDP-concentrations up to 10 mM 661247 5.1.3.14 D378Y 60% reduction of epimerase activity 672131 5.1.3.14 C13S a naturally occuirng missense mutation the epimerase part of the bifunctional enzyme 703912 5.1.3.14 C303V a naturally occuirng missense mutation the epimerase part of the bifunctional enzyme 703912 5.1.3.14 C303X a naturally occuirng missense mutation the epimerase part of the bifunctional enzyme 703912 5.1.3.14 D176V a naturally occuirng missense mutation the epimerase part of the bifunctional enzyme 703912 5.1.3.14 D225N a naturally occuirng missense mutation the epimerase part of the bifunctional enzyme 703912 5.1.3.14 D378Y a naturally occuirng missense mutation the epimerase part of the bifunctional enzyme 703912 5.1.3.14 G135V a naturally occuirng missense mutation the epimerase part of the bifunctional enzyme 703912 5.1.3.14 G206S a naturally occuirng missense mutation the epimerase part of the bifunctional enzyme 703912