ID   1.8.2.2
DE   thiosulfate dehydrogenase.
AN   tetrathionate synthase.
CA   2 Fe(III)-[cytochrome c] + 2 thiosulfate = 2 Fe(II)-[cytochrome c] +
CA   2 H(+) + tetrathionate.
CC   -!- The enzyme catalyzes the reversible formation of a sulfur-sulfur bond
CC       between the sulfane atoms of two thiosulfate molecules, yielding
CC       tetrathionate and releasing two electrons.
CC   -!- In many bacterial species the enzyme is a diheme c-type cytochrome.
CC   -!- In a number of organisms, including Thiomonas intermedia and
CC       Sideroxydans lithotrophicus, a second diheme cytochrome (TsdB) acts
CC       as the electron acceptor.
CC   -!- However, some organisms, such as Allochromatium vinosum, lack TsdB.
CC   -!- The electron acceptor in these organisms may be the high-potential
CC       iron-sulfur protein (HiPIP).
DR   D3RVD4, TSDA_ALLVD ;  Q4FQB7, TSDA_PSYA2 ;  A4VND8, TSDA_STUS1 ;
DR   D5WYQ5, TSDA_THIK1 ;
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