1.8.1.19: sulfide dehydrogenase

This is an abbreviated version!
For detailed information about sulfide dehydrogenase, go to the full flat file.

Word Map on EC 1.8.1.19

Reaction

hydrogen sulfide
+
(sulfide)n
+
NADP+
=
(sulfide)n+1
+
NADPH
+
H+

Synonyms

PF1328, SuDH, SuDH I

ECTree

     1 Oxidoreductases
         1.8 Acting on a sulfur group of donors
             1.8.1 With NAD+ or NADP+ as acceptor
                1.8.1.19 sulfide dehydrogenase

Substrates Products

Substrates Products on EC 1.8.1.19 - sulfide dehydrogenase

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SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
(sulfide)n+1 + NADPH + H+
hydrogen sulfide + (sulfide)n + NADP+
show the reaction diagram
NADH is not utilized as an electron donor for polysulfide reduction. Polysulfide reduction is catalyzed with reduced ferredoxin as an electron donor. However, the rate of sulfide production, at least in vitro, is much lower than when the enzyme uses NADPH to provide reductant for polysulfide reduction
-
-
?
colloidal sulfur + NADPH + H+
?
show the reaction diagram
the relative activity is about 40% compared to the activity with polysulfide
-
-
?
additional information
?
-
the enzyme also catalyzes ferredoxin:NADP+ reductase activity
-
-
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