3,4-dihydroxyphenylalanine reductive deaminase  3,4-dihydroxyphenylalanine reductive deaminase (, "reductive deaminase", "DOPA-reductive deaminase", "DOPARDA") is an enzyme with systematic name "3,4-dihydroxy-L-phenylalanine ammonia-lyase (3,4-dihydroxyphenylpropanoate-forming)". This enzyme catalyses the following chemical reaction  This enzyme participates in the L-phenylalanine-catabolism in the anaerobic phototrophic bacterium "Rhodobacter sphaeroides" OU5.