[DsrC protein]-dithiol + 2 a quinone + hydrogen sulfide + H(+) => [DsrC protein]-trisulfide + 2 a quinol
[dsrc protein]-dithiol + 2 a quinone + hydrogen sulfide + h(+) => [dsrc protein]-trisulfide + 2 a quinol
[DsrC protein]-dithiol + 2 a quinone + hydrogen sulfide + H(+) => [DsrC protein]-trisulfide + 2 a quinol
[dsrc protein]-dithiol + 2 a quinone + hydrogen sulfide + h(+) => [dsrc protein]-trisulfide + 2 a quinol