2-hydroxyhexa-2,4-dienoate hydratase

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2-hydroxyhexa-2,4-dienoate hydratase
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EC no. 4.2.1.132
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2-hydroxyhexa-2,4-dienoate hydratase (EC 4.2.1.132, tesE (gene), hsaE (gene)) is an enzyme with systematic name 4-hydroxy-2-oxohexanoate hydro-lyase ((2Z,4Z)-2-hydroxyhexa-2,4-dienoate-forming). [1] This enzyme catalyses the following chemical reaction

4-hydroxy-2-oxohexanoate (2Z,4Z)-2-hydroxyhexa-2,4-dienoate + H2O

This enzyme catalyses a late step in the bacterial steroid degradation pathway.

Related Research Articles

<span class="mw-page-title-main">Enoyl CoA isomerase</span>

Enoyl-CoA-(∆) isomerase (EC 5.3.3.8, also known as dodecenoyl-CoA- isomerase, 3,2-trans-enoyl-CoA isomerase, ∆3 ,∆2 -enoyl-CoA isomerase, or acetylene-allene isomerase, is an enzyme that catalyzes the conversion of cis- or trans-double bonds of coenzyme A bound fatty acids at gamma-carbon to trans double bonds at beta-carbon as below:

<span class="mw-page-title-main">HMG-CoA reductase</span> Mammalian protein found in Homo sapiens

HMG-CoA reductase is the rate-controlling enzyme of the mevalonate pathway, the metabolic pathway that produces cholesterol and other isoprenoids. HMGCR catalyzes the conversion of HMG-CoA to mevalonic acid, a necessary step in the biosynthesis of cholesterol. Normally in mammalian cells this enzyme is competitively suppressed so that its effect is controlled. This enzyme is the target of the widely available cholesterol-lowering drugs known collectively as the statins, which help treat dyslipidemia.

<span class="mw-page-title-main">Nitrilase</span> Class of enzymes

Nitrilase enzymes catalyse the hydrolysis of nitriles to carboxylic acids and ammonia, without the formation of "free" amide intermediates. Nitrilases are involved in natural product biosynthesis and post translational modifications in plants, animals, fungi and certain prokaryotes. Nitrilases can also be used as catalysts in preparative organic chemistry. Among others, nitrilases have been used for the resolution of racemic mixtures. Nitrilase should not be confused with nitrile hydratase which hydrolyses nitriles to amides. Nitrile hydratases are almost invariably co-expressed with an amidase, which converts the amide to the carboxylic acid. Consequently, it can sometimes be difficult to distinguish nitrilase activity from nitrile hydratase plus amidase activity.

4-Hydroxybenzoic acid, also known as p-hydroxybenzoic acid (PHBA), is a monohydroxybenzoic acid, a phenolic derivative of benzoic acid. It is a white crystalline solid that is slightly soluble in water and chloroform but more soluble in polar organic solvents such as alcohols and acetone. 4-Hydroxybenzoic acid is primarily known as the basis for the preparation of its esters, known as parabens, which are used as preservatives in cosmetics and some ophthalmic solutions. It is isomeric with 2-hydroxybenzoic acid, known as salicylic acid, a precursor to aspirin, and with 3-hydroxybenzoic acid.

<span class="mw-page-title-main">Methylglutaconyl-CoA hydratase</span> Protein-coding gene in the species Homo sapiens

3-Methylglutaconyl-CoA hydratase, also known as MG-CoA hydratase and AUH, is an enzyme encoded by the AUH gene on chromosome 19. It is a member of the enoyl-CoA hydratase/isomerase superfamily, but it is the only member of that family that is able to bind to RNA. Not only does it bind to RNA, AUH has also been observed to be involved in the metabolic enzymatic activity, making it a dual-role protein. Mutations of this gene have been found to cause a disease called 3-Methylglutaconic Acuduria Type 1.

In enzymology, a 2-hydroxy-6-oxo-6-phenylhexa-2,4-dienoate reductase (EC 1.3.1.40) is an enzyme that catalyzes the chemical reaction

<span class="mw-page-title-main">Biphenyl-2,3-diol 1,2-dioxygenase</span>

Biphenyl-2,3-diol 1,2-dioxygenase (EC 1.13.11.39) is an enzyme that catalyzes the chemical reaction

In enzymology, a 2-hydroxymuconate-semialdehyde hydrolase (EC 3.7.1.9) is an enzyme that catalyzes the chemical reaction

<span class="mw-page-title-main">ECH1</span> Protein-coding gene in the species Homo sapiens

Delta(3,5)-Delta(2,4)-dienoyl-CoA isomerase, mitochondrial is an enzyme that in humans is encoded by the ECH1 gene.

TESE or Tase may refer to:

2-Hydroxymuconate-6-semialdehyde dehydrogenase (EC 1.2.1.85, xylG [gene], praB [gene] ) is an enzyme with systematic name (2E,4Z)-2-hydroxy-6-oxohexa-2,4-dienoate:NAD+ oxidoreductase. This enzyme catalyses the following chemical reaction

Hydroquinone 1,2-dioxygenase (EC 1.13.11.66, hydroquinone dioxygenase) is an enzyme with systematic name benzene-1,4-diol:oxygen 1,2-oxidoreductase (decyclizing). This enzyme catalyses the following chemical reaction

2-hydroxy-6-oxo-6-(2-aminophenyl)hexa-2,4-dienoate hydrolase (EC 3.7.1.13, CarC) is an enzyme with systematic name (2E,4E)-6-(2-aminophenyl)-2-hydroxy-6-oxohexa-2,4-dienoate acylhydrolase. This enzyme catalyses the following chemical reaction

2-hydroxy-6-oxonona-2,4-dienedioate hydrolase (EC 3.7.1.14, mhpC (gene)) is an enzyme with systematic name (2Z,4E)-2-hydroxy-6-oxona-2,4-dienedioate succinylhydrolase. This enzyme catalyses the following chemical reaction:

  1. (2Z,4E)-2-hydroxy-6-oxonona-2,4-diene-1,9-dioate + H2O (2Z)-2-hydroxypenta-2,4-dienoate + succinate
  2. (2Z,4E,7E)-2-hydroxy-6-oxonona-2,4,7-triene-1,9-dioate + H2O (2Z)-2-hydroxypenta-2,4-dienoate + fumarate

4,5:9,10-diseco-3-hydroxy-5,9,17-trioxoandrosta-1(10),2-diene-4-oate hydrolase (EC 3.7.1.17, tesD (gene), hsaD (gene)) is an enzyme with systematic name 4,5:9,10-diseco-3-hydroxy-5,9,17-trioxoandrosta-1(10),2-diene-4-oate hydrolase ( (2Z,4Z)-2-hydroxyhexa-2,4-dienoate-forming). This enzyme catalyses the following chemical reaction

Enoyl-CoA hydratase 2 is an enzyme with systematic name (3R)-3-hydroxyacyl-CoA hydro-lyase. This enzyme catalyses the following chemical reaction on D-3-hydroxyacyl-CoA

2-hydroxymuconate tautomerase is an enzyme with systematic name (2Z,4E)-2-hydroxyhexa-2,4-dienedioate keto-enol isomerase. This enzyme catalyses the following chemical reaction

2-hydroxychromene-2-carboxylate isomerase is an enzyme with systematic name 2-hydroxy-2H-chromene-2-carboxylate---(3E)-4-(2-hydroxyphenyl)-2-oxobut-3-enoate isomerase. This enzyme catalyses the following chemical reaction

Decadienoic acid is any mono-carboxylic acid with an unbranched chain of ten carbon atoms, connected by seven single bonds and two double bonds. That is, any compound with formula HO(O=)C–(CH
2
)
x
–CH=CH–(CH
2
)
y
–CH=CH–(–CH
2
)
z
–H where x, y, and z can be zero or more, and x+y+z = 5 ; or HO(O=)C–(CH
2
)
r
–CH=C=CH–(CH
2
)
s
–H where r + s = 6. All these compounds have the formula C
10
H
16
O
2
. A salt or ester of such an acid is called a decadienoate.

References

  1. Horinouchi M, Hayashi T, Koshino H, Kurita T, Kudo T (September 2005). "Identification of 9,17-dioxo-1,2,3,4,10,19-hexanorandrostan-5-oic acid, 4-hydroxy-2-oxohexanoic acid, and 2-hydroxyhexa-2,4-dienoic acid and related enzymes involved in testosterone degradation in Comamonas testosteroni TA441". Applied and Environmental Microbiology. 71 (9): 5275–81. doi:10.1128/aem.71.9.5275-5281.2005. PMC   1214608 . PMID   16151114.