This is the C-terminal domain of L-Lysine epsilon-oxidase (LodA, EC 1.4.3.20), an enzyme which catalyses the oxidative deamination of free L-lysine into L-2-aminoadipate 6-semialdehyde, ammonia and hydrogen peroxide [1].

1: X-ray crystallographic evidence for the presence of the cysteine tryptophylquinone cofactor in L-lysine epsilon-oxidase from Marinomonas mediterranea. Okazaki S, Nakano S, Matsui D, Akaji S, Inagaki K, Asano Y; J Biochem. 2013;154:233-236. PMID:23908359