ID 1.8.5.9 DE protein dithiol:quinone oxidoreductase DsbB. CA [DsbA protein]-dithiol + a quinone = [DsbA protein]-disulfide + a quinol. CC -!- DsbB is a protein found in Gram-negative bacteria that functions CC within a pathway for protein disulfide bond formation. CC -!- The enzyme catalyzes the oxidation of the DsbA protein by generating CC disulfide bonds de novo via the reduction of membrane quinones. cf. CC EC 1.8.4.15. //