O-phospho-L-serine + sulfite + H(+) => L-cysteate + phosphate
o-phospho-l-serine + sulfite + h(+) => l-cysteate + phosphate
O-phospho-L-serine + sulfite + H(+) => L-cysteate + phosphate
o-phospho-l-serine + sulfite + h(+) => l-cysteate + phosphate