ID 4.1.1.122 DE L-cysteate decarboxylase. CA H(+) + L-cysteate = CO2 + taurine. CC -!- Requires pyridoxal 5'-phosphate. CC -!- The enzyme, characterized from chicken, is specific for L-cysteate CC and has poor activity with 3-sulfino-L-alanine. cf. EC 4.1.1.29. //