This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is L-rhamnofuranose:NAD+ 1-oxidoreductase. This enzyme participates in fructose and mannose metabolism.
References
Rigo LU, Marechal LR, Vieira MM, Veiga LA (1985). "Oxidative pathway for L-rhamnose degradation in Pullularia pullulans". Can. J. Microbiol. 31 (9): 817–822. doi:10.1139/m85-153.