A pyridoxal 5'-phosphate protein. The enzyme degrades the toxic amino acid L-mimosine. It cleaves a carbon-nitrogen bond, releasing 3-hydroxy-4H-pyrid-4-one and an unstable enamine product that tautomerizes to an imine form, which undergoes a hydrolytic deamination to form pyruvate and ammonia. It is thought to have evolved from EC 126.96.36.199, cysteine-S-conjugate beta-lyase. It has been described in both mimosine-producing plants and some bacteria.
EC 188.8.131.52 created 1989 as EC 184.108.40.206, transferred 2022 to EC 220.127.116.11