[DsrC protein]-dithiol + sulfite + 2 AH2 + 2 H(+) => [DsrC protein]-S-sulfanyl-L-cysteine/L-cysteine + 2 A + 3 H2O
[dsrc protein]-dithiol + sulfite + 2 ah2 + 2 h(+) => [dsrc protein]-s-sulfanyl-l-cysteine/l-cysteine + 2 a + 3 h2o
[DsrC protein]-dithiol + sulfite + 2 AH2 + 2 H(+) => [DsrC protein]-S-sulfanyl-L-cysteine/L-cysteine + 2 A + 3 H2O
[dsrc protein]-dithiol + sulfite + 2 ah2 + 2 h(+) => [dsrc protein]-s-sulfanyl-l-cysteine/l-cysteine + 2 a + 3 h2o