[DsrC protein]-dithiol + sulfite + NADH + 3 H(+) => [DsrC protein]-trisulfide + NAD(+) + 3 H2O
[dsrc protein]-dithiol + sulfite + nadh + 3 h(+) => [dsrc protein]-trisulfide + nad(+) + 3 h2o
[DsrC protein]-dithiol + sulfite + NADH + 3 H(+) => [DsrC protein]-trisulfide + NAD(+) + 3 H2O
[dsrc protein]-dithiol + sulfite + nadh + 3 h(+) => [dsrc protein]-trisulfide + nad(+) + 3 h2o