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(2S)-2-hydroxypropyl-CoM + NAD+ = 2-oxopropyl-CoM + NADH + H+
(2S)-2-hydroxypropyl-CoM + NAD+ = 2-oxopropyl-CoM + NADH + H+

highly specific
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(2S)-2-hydroxypropyl-CoM + NAD+ = 2-oxopropyl-CoM + NADH + H+
The enzyme is highly specific for (S)-2-hydroxyalkyl thioethers of CoM, in contrast to EC 1.1.1.268, 2-(R)-hydroxypropyl-CoM dehydrogenase, which is highly specific of the (R)-enantiomer. This enzyme forms component IV of four-component enzyme system. Comprising EC 4.2.99.19, 2-hydroxypropyl-CoM lyase, component I, EC 1.8.1.5, 2-oxopropyl-CoM reductase, carboxylating, component II, EC 1.1.1.268, 2-(R)-hydroxypropyl-CoM dehydrogenase, component III, and EC 1.1.1.269, 2-(S)-hydroxypropyl-CoM dehydrogenase, component IV, that is involved in epoxylalkane carboxylation in Xanthobacter sp. strain Py2
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(2S)-2-hydroxypropyl-CoM + NAD+ = 2-oxopropyl-CoM + NADH + H+
active site structure modeling and stereochemistry of reaction mechanism, overview
(2S)-2-hydroxypropyl-CoM + NAD+ = 2-oxopropyl-CoM + NADH + H+
active site structure modeling and stereochemistry of reaction mechanism, overview
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(2S)-2-hydroxypropyl-CoM + NAD+ = 2-oxopropyl-CoM + NADH + H+
active site structure modeling and stereochemistry of reaction mechanism, overview
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(2S)-2-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
(R)-2-butanol + NAD+
2-butanone + NADH + H+
Substrates: -
Products: -
r
(S)-2-butanol + NAD+
2-butanone + NADH + H+
2-(2-hydroxyethylthio)ethanesulfonate + NAD+
2-(formylmethylthio)ethanesulfonate + NADH + H+
Substrates: achiral mimic of both R-hydroxypropyl-CoM and S-hydroxypropyl-CoM, substrate for both the R- and S-HPCDH enzymes with identical Km values
Products: -
r
2-(R)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
2-(S)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
2-(S)hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH
2-butanone + NADH + H+
(S)-2-butanol + (R)-2-butanol + NAD+
2-oxopropyl-CoM + NADH + H+
2-(R)-hydroxypropyl-CoM + NAD+
2-propanol + NAD+
acetone + NADH + H+
Substrates: -
Products: -
r
additional information
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(2S)-2-hydroxypropyl-CoM + NAD+

2-oxopropyl-CoM + NADH + H+
Substrates: -
Products: -
r
(2S)-2-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: substrate binding structure, overview
Products: -
r
(2S)-2-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: -
Products: -
r
(2S)-2-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: substrate binding structure, overview
Products: -
r
(2S)-2-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: -
Products: -
r
(2S)-2-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: substrate binding structure, overview
Products: -
r
(S)-2-butanol + NAD+

2-butanone + NADH + H+
Substrates: -
Products: -
r
(S)-2-butanol + NAD+
2-butanone + NADH + H+
Substrates: -
Products: -
r
2-(R)-hydroxypropyl-CoM + NAD+

2-oxopropyl-CoM + NADH + H+
Substrates: -
Products: -
r
2-(R)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: poor substrate. S-HPCDH3 cannot bind hydroxypropyl-CoM with CoM oriented properly in the sulfonate-binding pocket that consists of residues R211 and K214. R-hydroxypropyl-CoM binds to S-HPCDH3 with a 290-fold lower affinity but in an orientation where the hydroxyl and hydrogen on C2 can be more properly aligned with tyrosine 156 and NAD+, such that kcat decreases by 4.5-fold relative to the natural substrate S-hydroxypropyl-CoM
Products: -
r
2-(R)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: -
Products: -
r
2-(R)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: poor substrate. S-HPCDH3 cannot bind hydroxypropyl-CoM with CoM oriented properly in the sulfonate-binding pocket that consists of residues R211 and K214. R-hydroxypropyl-CoM binds to S-HPCDH3 with a 290-fold lower affinity but in an orientation where the hydroxyl and hydrogen on C2 can be more properly aligned with tyrosine 156 and NAD+, such that kcat decreases by 4.5-fold relative to the natural substrate S-hydroxypropyl-CoM
Products: -
r
2-(S)-hydroxypropyl-CoM + NAD+

2-oxopropyl-CoM + NADH + H+
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Substrates: -
Products: -
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2-(S)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: oxidation of S-hydroxypropyl-CoM with a kcat that is 402 times less than that for R-hydroxypropyl-CoM
Products: -
r
2-(S)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: -
Products: -
r
2-(S)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: -
Products: -
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2-(S)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: substrate binding structures, overview
Products: -
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2-(S)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
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Substrates: -
Products: -
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2-(S)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: oxidation of S-hydroxypropyl-CoM with a kcat that is 402 times less than that for R-hydroxypropyl-CoM
Products: -
r
2-(S)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: -
Products: -
r
2-(S)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: -
Products: -
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2-(S)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: substrate binding structures, overview
Products: -
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2-(S)hydroxypropyl-CoM + NAD+

2-oxopropyl-CoM + NADH
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Substrates: involved in propylene metabolism in bacteria
Products: -
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2-(S)hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH
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Substrates: involved in propylene metabolism in bacteria
Products: -
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2-butanone + NADH + H+

(S)-2-butanol + (R)-2-butanol + NAD+
Substrates: -
Products: -
r
2-butanone + NADH + H+
(S)-2-butanol + (R)-2-butanol + NAD+
Substrates: -
Products: without additions, 99.2% (S)-enantiomer + 0.8% (R)-enantiomer, in presence of 1 mM ethansulfonate 99.0% (S)-enantiomer + 2% (R)-enantiomer. Mutant K214A, without additions, 91.6% (S)-enantiomer + 8.4% (R)-enantiomer, in presence of 1 mM ethansulfonate 90.9% (S)-enantiomer + 9.1% (R)-enantiomer
r
2-butanone + NADH + H+
(S)-2-butanol + (R)-2-butanol + NAD+
Substrates: -
Products: -
r
2-butanone + NADH + H+
(S)-2-butanol + (R)-2-butanol + NAD+
Substrates: -
Products: without additions, 99.2% (S)-enantiomer + 0.8% (R)-enantiomer, in presence of 1 mM ethansulfonate 99.0% (S)-enantiomer + 2% (R)-enantiomer. Mutant K214A, without additions, 91.6% (S)-enantiomer + 8.4% (R)-enantiomer, in presence of 1 mM ethansulfonate 90.9% (S)-enantiomer + 9.1% (R)-enantiomer
r
2-oxopropyl-CoM + NADH + H+

2-(R)-hydroxypropyl-CoM + NAD+
Substrates: -
Products: -
r
2-oxopropyl-CoM + NADH + H+
2-(R)-hydroxypropyl-CoM + NAD+
Substrates: -
Products: -
r
additional information

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Substrates: substrate specificity of the stereochemically different isozymes, R-HPCDH (EC 1.1.1.268) and S-HPCDH are 41% identical to each other, overview
Products: -
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additional information
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Substrates: substrate specificity of the stereochemically different isozymes, R-HPCDH (EC 1.1.1.268) and S-HPCDH are 41% identical to each other, overview
Products: -
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additional information
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Substrates: substrate specificity of the stereochemically different isozymes, R-HPCDH (EC 1.1.1.268) and S-HPCDH are 41% identical to each other, overview
Products: -
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(2S)-2-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
2-(S)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
2-(S)hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH
(2S)-2-hydroxypropyl-CoM + NAD+

2-oxopropyl-CoM + NADH + H+
Substrates: -
Products: -
r
(2S)-2-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: -
Products: -
r
(2S)-2-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: -
Products: -
r
2-(S)-hydroxypropyl-CoM + NAD+

2-oxopropyl-CoM + NADH + H+
Substrates: -
Products: -
?
2-(S)-hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH + H+
Substrates: -
Products: -
?
2-(S)hydroxypropyl-CoM + NAD+

2-oxopropyl-CoM + NADH
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Substrates: involved in propylene metabolism in bacteria
Products: -
?
2-(S)hydroxypropyl-CoM + NAD+
2-oxopropyl-CoM + NADH
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Substrates: involved in propylene metabolism in bacteria
Products: -
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evolution

the enzyme belongs to the short-chain dehydrogenases/reductase (SDR) superfamily of enzymes. The C-terminal domains of SDR enzymes are responsible for imparting substrate specificity
evolution
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the enzyme belongs to the short-chain dehydrogenases/reductase (SDR) superfamily of enzymes. The C-terminal domains of SDR enzymes are responsible for imparting substrate specificity
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evolution
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the enzyme belongs to the short-chain dehydrogenases/reductase (SDR) superfamily of enzymes. The C-terminal domains of SDR enzymes are responsible for imparting substrate specificity
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metabolism

the bacterium produces R- and S-HPCDH, EC 1.1.1.268 and EC 1.1.1.269, simultaneously to facilitate transformation of R- and S-enantiomers of epoxy-propane to acommon achiral product 2-ketopropyl-CoM
metabolism
(R)- and (S)-hydroxypropyl-coenzyme M dehydrogenase (R- and S-HPCDH), are part of a bacterial pathway of short-chain alkene and epoxide metabolism. R- and S-HPCDH act on different substrate enantiomers in a common pathway
metabolism
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the bacterium produces R- and S-HPCDH, EC 1.1.1.268 and EC 1.1.1.269, simultaneously to facilitate transformation of R- and S-enantiomers of epoxy-propane to acommon achiral product 2-ketopropyl-CoM
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metabolism
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(R)- and (S)-hydroxypropyl-coenzyme M dehydrogenase (R- and S-HPCDH), are part of a bacterial pathway of short-chain alkene and epoxide metabolism. R- and S-HPCDH act on different substrate enantiomers in a common pathway
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metabolism
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(R)- and (S)-hydroxypropyl-coenzyme M dehydrogenase (R- and S-HPCDH), are part of a bacterial pathway of short-chain alkene and epoxide metabolism. R- and S-HPCDH act on different substrate enantiomers in a common pathway
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additional information

structural basis for stereospecificity of S-HPCDH, comparison to R-HPCDH, EC 1.1.1.268, overview. Placement of catalytic residues within the active site of each enzyme is nearly identical, structural differences in the surrounding area provide each enzyme with a distinct substrate binding pocket. The active site of S-HPCDH is located in a cleft between the N- and C-terminal domains, the catalytic tetrad comprises residues Y156, K160, S143, and N115
additional information
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structural basis for stereospecificity of S-HPCDH, comparison to R-HPCDH, EC 1.1.1.268, overview. Placement of catalytic residues within the active site of each enzyme is nearly identical, structural differences in the surrounding area provide each enzyme with a distinct substrate binding pocket. The active site of S-HPCDH is located in a cleft between the N- and C-terminal domains, the catalytic tetrad comprises residues Y156, K160, S143, and N115
additional information
structure-function relationship, active site structure modeling and stereochemistry of reaction mechanism, overview. The C-terminal domains of SDR enzymes are responsible for imparting substrate specificity
additional information
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structural basis for stereospecificity of S-HPCDH, comparison to R-HPCDH, EC 1.1.1.268, overview. Placement of catalytic residues within the active site of each enzyme is nearly identical, structural differences in the surrounding area provide each enzyme with a distinct substrate binding pocket. The active site of S-HPCDH is located in a cleft between the N- and C-terminal domains, the catalytic tetrad comprises residues Y156, K160, S143, and N115
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additional information
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structure-function relationship, active site structure modeling and stereochemistry of reaction mechanism, overview. The C-terminal domains of SDR enzymes are responsible for imparting substrate specificity
-
additional information
-
structure-function relationship, active site structure modeling and stereochemistry of reaction mechanism, overview. The C-terminal domains of SDR enzymes are responsible for imparting substrate specificity
-
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Krum, J.G.; Ensign, S.A.
Evidence that a linear megaplasmid encodes enzymes of aliphatic alkene and epoxide metabolism and coenzyme M (2-mercaptoethanesulfonate) biosynthesis in Xanthobacter strain Py2
J. Bacteriol.
183
2172-2177
2001
Xanthobacter sp., Xanthobacter sp. Py2
brenda
Krishnakumar, A.M.; Nocek, B.P.; Clark, D.D.; Ensign, S.A.; Peters, J.W.
Structural basis for stereoselectivity in the (R)- and (S)-hydroxypropylthioethanesulfonate dehydrogenases
Biochemistry
45
8831-8840
2006
Xanthobacter autotrophicus, Xanthobacter autotrophicus Py2
brenda
Sliwa, D.A.; Krishnakumar, A.M.; Peters, J.W.; Ensign, S.A.
Molecular basis for enantioselectivity in the (R)- and (S)-hydroxypropylthioethanesulfonate dehydrogenases, a unique pair of stereoselective short-chain dehydrogenases/reductases involved in aliphatic epoxide carboxylation
Biochemistry
49
3487-3498
2010
Xanthobacter autotrophicus, Xanthobacter autotrophicus (Q56841), Xanthobacter autotrophicus Py2, Xanthobacter autotrophicus Py2 (Q56841)
brenda
Bakelar, J.W.; Sliwa, D.A.; Johnson, S.J.
Crystal structures of S-HPCDH reveal determinants of stereospecificity for R- and S-hydroxypropyl-coenzyme M dehydrogenases
Arch. Biochem. Biophys.
533
62-68
2013
Xanthobacter autotrophicus (A7IQH5), Xanthobacter autotrophicus, Xanthobacter autotrophicus Py2 (A7IQH5)
brenda
Clark, D.D.
Characterization of the recombinant (R)- and (S)-hydroxypropyl-coenzyme M dehydrogenases A case study to augment the teaching of enzyme kinetics and stereoselectivity
Biochem. Mol. Biol. Educ.
47
124-132
2019
Xanthobacter autotrophicus (Q56841), Xanthobacter autotrophicus ATCC BAA-1158 (Q56841), Xanthobacter autotrophicus Py2 (Q56841)
brenda