<p> Rhamnose is a methyl-pentose sugar which is found as a constituent of pectin within the cell walls of dicotyledonous plants and has also been found in the mucilage of a number of legume plants [<cite idref="PUB00020766"/>]. RhaD from <taxon tax_id="386">Rhizobium leguminosarum bv. trifolii</taxon> is encoded by a gene occurring in a rhamnose utilisation cluster, and is necessary for growth on this compound [<cite idref="PUB00020780"/>]. This protein is predicted to be a bifunctional NAD-dependent aldolase/dehydrogenase.</p>