[DsrC protein]-disulfide + sulfite + H(+) => [DsrC protein]-S-sulfo-L-cysteine/L-cysteine
[dsrc protein]-disulfide + sulfite + h(+) => [dsrc protein]-s-sulfo-l-cysteine/l-cysteine
[DsrC protein]-disulfide + sulfite + H(+) => [DsrC protein]-S-sulfo-L-cysteine/L-cysteine
[dsrc protein]-disulfide + sulfite + h(+) => [dsrc protein]-s-sulfo-l-cysteine/l-cysteine