(R)-lanthionine ketimine + NADPH + 2 H(+) <=> (3R,5R)-1,4-thiomorpholine-3,5-dicarboxylate + NADP(+)
(r)-lanthionine ketimine + nadph + 2 h(+) <=> (3r,5r)-1,4-thiomorpholine-3,5-dicarboxylate + nadp(+)