The enzyme from the archaeon Thermoplasma acidophilum is part of the non-phosphorylative degradation pathway for L-rhamnose. The enzyme differs in cofactor specificity from EC 18.104.22.168, L-rhamnose 1-dehydrogenase, which is specific for NAD+.
Kim, S.M., Paek, K.H. and Lee, S.B. Characterization of NADP+-specific L-rhamnose dehydrogenase from the thermoacidophilic Archaeon Thermoplasma acidophilum. Extremophiles16 (2012) 447–454. [PMID: 22481639]