1.12.98.4: sulfhydrogenase
This is an abbreviated version!
For detailed information about sulfhydrogenase, go to the full flat file.
Word Map on EC 1.12.98.4
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1.12.98.4
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h2s
-
hydrogenases
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succinogenes
-
wolinella
-
pasteurianum
-
sulfur-reducing
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tetrathionate
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chemolithotrophic
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sulfur-dependent
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molybdoenzyme
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energy production
- 1.12.98.4
- h2s
- hydrogenases
- succinogenes
-
wolinella
- pasteurianum
-
sulfur-reducing
- tetrathionate
-
chemolithotrophic
-
sulfur-dependent
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molybdoenzyme
- energy production
Reaction
Synonyms
EC 1.97.1.3, H-II, H2:sulfuroxidoreductase complex, hydrogenase II, NiFe sulfhydrogenase, polysulfide dehydrogenase, polysulfide reductase, reductase, sulfur, SH2ase, sulfhydrogenase, sulfur reductase, sulhydrogenase
ECTree
1.12.98.4 sulfhydrogenaseAdvanced search results
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results (Substrates Products
Substrates Products on EC 1.12.98.4 - sulfhydrogenase
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SUBSTRATE 
PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
disulfide + electron donor
H2S
-
cystine and cystamine, minimal activities, PDH
-
?
H2 + benzyl viologen
H2S + reduced benzyl viologen
highest activity
-
-
?
H2S + NADH + H+
H2 + NAD+
-
NADH is a very inefficient electron carrier for sulfhydrogenase
-
-
r
NADPH + H+ + polysulfide(n)
NADP+ + polysulfide(n-1)
-
-
-
r
sulfur + H2
H2S
-
in solubilized membrane fraction no activity is detected without the addition of electron carriers: 2,3-dimethylnaphthoquinone, plastoquinone or horse heart cytochrome c
-
-
?
tetrasulfide + electron donor
H2S + oxidized electron donor
-
comparable to colloidal sulfur
-
?
H2 + methyl viologen
H2S + reduced methyl viologen
-
-
-
?
H2 + polysulfide(n)
H2S + polysulfide(n-1)
-
-
-
r
organic trisulfides + electron donor
H2S + oxidized electron donor
-
-
-
-
?
organic trisulfides + electron donor
H2S + oxidized electron donor
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i.e. (R-S-S-S-R)2, R: CH2CH2NH2
-
?
organic trisulfides + electron donor
H2S + oxidized electron donor
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i.e. (R-S-S-S-R)2, R: CH2CH2NH2
-
-
?
organic trisulfides + electron donor
H2S + oxidized electron donor
-
R: CH2CH(COOH)NH2, CH2CH2SO3Na or CH2CH2COONa, reduced at a rate comparable to elemental sulfur
-
?
polysulfide + electron donor
H2S + oxidized electron donor
-
-
-
?
polysulfide + electron donor
H2S + oxidized electron donor
-
comparable to colloidal sulfur
-
?
polysulfide + electron donor
H2S + oxidized electron donor
-
highest activity, NADH and NADPH as electron donors for PDH, hydrogen alone can reduce polysulfide via sulfhydrogenase, but the amount of this activity is minimal compared with that of PDH
-
-
?
polysulfide + electron donor
H2S + oxidized electron donor
-
polysulfide appears to be the soluble intermediate in the sulfur reduction, electron-transport-coupled phosphorylation
-
?
polysulfide + electron donor
H2S + oxidized electron donor
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polysulfide appears to be the soluble intermediate in the sulfur reduction, electron-transport-coupled phosphorylation
-
-
?
sulfur
H2S
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reduction is coupled to the phosphorylation of ADP with phosphate in the catabolism of some anaerobic microorganisms
-
?
sulfur
H2S
-
functional sulfur reductase that operates in the electron transport chain from fumarate to sulfur together with formate dehydrogenase, a membrane-bound and a cytoplasmic sulfur reductase
-
?
sulfur
H2S
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reduction is coupled to the phosphorylation of ADP with phosphate in the catabolism of some anaerobic microorganisms
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
-
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
-
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
electron donor: molecular hydrogen
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
elemental: best results with colloidal Janek sulfur, hydrophilic sulfur yields generally lower activities
-
?
sulfur + electron donor
H2S + oxidized electron donor
thermophilic iron-oxidizing bacterium strain TI-1
-
electron donor: NADH, NADPH not
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
electron donor: NADH or NAPDH
-
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
electron donor: molecular hydrogen
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
electron donor: molecular hydrogen
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
electron donor: formate
-
?
sulfur + electron donor
H2S + oxidized electron donor
-
electron donor: formate
CO2
?
sulfur + electron donor
H2S + oxidized electron donor
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colloidal sulfur but not sulfur flower or precipitated sulfur
-
?
additional information
?
-
-
no substrate: dimethyl sulfoxide, thiosulfate. Presence of NADPH increases the sulfur reducing activity. Hydrogenase reaction ond sulfur reduction by enzyme are energetically coupled but take place in two separate complexes. Electron transfer is mediated by quinones
-
-
?
additional information
?
-
ferredoxin from Pyrococcus furiosus is not an efficient electron carrier
-
-
?
additional information
?
-
-
ferredoxin from Pyrococcus furiosus is not an efficient electron carrier
-
-
?
additional information
?
-
-
ferredoxin is not an effective electron donor for Pyrococcus furiosus sulfhydrogenase. NAD+ is not reduced
-
-
?
additional information
?
-
-
sulfur can be reduced by photochemical reduction in the presence of phenosafranin
-
-
?
additional information
?
-
-
sulfur can be reduced by photochemical reduction in the presence of phenosafranin
-
-
?
additional information
?
-
-
sulfur can be reduced by photochemical reduction in the presence of phenosafranin
-
-
?
additional information
?
-
-
no substrates are sulfite, thiosulfate, tetrathionate
-
-
?
additional information
?
-
thermophilic iron-oxidizing bacterium strain TI-1
-
no substrates are sulfite, thiosulfate, tetrathionate
-
-
?
