Exogenous or <scp>l</scp> -Rhamnose-Derived 1,2-Propanediol Is Metabolized via a <i>pduD</i> -Dependent Pathway in <i>Listeria innocua</i>

Abstract

1,2-Propanediol (1,2-PD) added exogenously to cultures or produced endogenously from l-rhamnose is metabolized to n-propanol and propionate in Listeria innocua Lin11. The pduD gene, which encodes a diol dehydratase ss subunit homolog, is required for 1,2-PD catabolism. pduD and 16 other genes within the pduA-to-pduF region of a large gene cluster are induced in medium containing 1,2-PD.