Propioin synthase

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propioin synthase
Identifiers
EC no. 4.1.2.35
CAS no. 114189-86-5
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MetaCyc metabolic pathway
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The enzyme propioin synthase (EC 4.1.2.35) catalyzes the chemical reaction

4-hydroxy-3-hexanone 2 propanal

This enzyme belongs to the family of lyases, specifically the aldehyde-lyases, which cleave carbon-carbon bonds. The systematic name of this enzyme class is 4-hydroxy-3-hexanone propanal-lyase (propanal-forming). Other names in common use include 4-hydroxy-3-hexanone aldolase, and 4-hydroxy-3-hexanone propanal-lyase.

Related Research Articles

In biochemistry, a lyase is an enzyme that catalyzes the breaking of various chemical bonds by means other than hydrolysis and oxidation, often forming a new double bond or a new ring structure. The reverse reaction is also possible. For example, an enzyme that catalyzed this reaction would be a lyase:

<span class="mw-page-title-main">3-Hydroxy-3-methylglutaryl-CoA lyase</span> Class of enzymes

3-Hydroxy-3-methylglutaryl-CoA lyase is an enzyme (EC 4.1.3.4 that in human is encoded by the HMGCL gene located on chromosome 1. It is a key enzyme in ketogenesis. It is a ketogenic enzyme in the liver that catalyzes the formation of acetoacetate from HMG-CoA within the mitochondria. It also plays a prominent role in the catabolism of the amino acid leucine.

The enzyme 3-hydroxy-2-methylpyridine-4,5-dicarboxylate 4-decarboxylase (EC 4.1.1.51) catalyzes the chemical reaction

The enzyme 3-hydroxy-3-isohexenylglutaryl-CoA lyase catalyzes the chemical reaction

The enzyme 4-hydroxy-2-oxoglutarate aldolase catalyzes the chemical reaction

<span class="mw-page-title-main">4-hydroxy-2-oxovalerate aldolase</span> InterPro Family

The enzyme 4-hydroxy-2-oxovalerate aldolase catalyzes the chemical reaction

The enzyme 4-hydroxy-4-methyl-2-oxoglutarate aldolase catalyzes the chemical reaction

The enzyme acetolactate decarboxylase (EC 4.1.1.5) catalyzes the chemical reaction

The enzyme benzoin aldolase catalyzes the chemical reaction

The enzyme citramalate lyase catalyzes the chemical reaction

The enzyme hydroxyglutamate decarboxylase (EC 4.1.1.16) catalyzes the chemical reaction

<span class="mw-page-title-main">Oxalyl-CoA decarboxylase</span>

The enzyme oxalyl-CoA decarboxylase (OXC) (EC 4.1.1.8), primarily produced by the gastrointestinal bacterium Oxalobacter formigenes, catalyzes the chemical reaction

In enzymology, a vanillin synthase is an enzyme that catalyzes the chemical reaction

The enzyme abieta-7,13-diene synthase catalyzes the chemical reaction

The enzyme bile-acid 7α-dehydratase (EC 4.2.1.106) catalyzes the chemical reaction

<span class="mw-page-title-main">Threonine synthase</span>

The enzyme threonine synthase (EC 4.2.3.1) catalyzes the chemical reaction

<span class="mw-page-title-main">Hydroxymethylglutaryl-CoA synthase</span> Class of enzymes

In molecular biology, hydroxymethylglutaryl-CoA synthase or HMG-CoA synthase EC 2.3.3.10 is an enzyme which catalyzes the reaction in which acetyl-CoA condenses with acetoacetyl-CoA to form 3-hydroxy-3-methylglutaryl-CoA (HMG-CoA). This reaction comprises the second step in the mevalonate-dependent isoprenoid biosynthesis pathway. HMG-CoA is an intermediate in both cholesterol synthesis and ketogenesis. This reaction is overactivated in patients with diabetes mellitus type 1 if left untreated, due to prolonged insulin deficiency and the exhaustion of substrates for gluconeogenesis and the TCA cycle, notably oxaloacetate. This results in shunting of excess acetyl-CoA into the ketone synthesis pathway via HMG-CoA, leading to the development of diabetic ketoacidosis.

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

3-Deoxy-D-arabinoheptulosonate 7-phosphate (DAHP) synthase is the first enzyme in a series of metabolic reactions known as the shikimate pathway, which is responsible for the biosynthesis of the amino acids phenylalanine, tyrosine, and tryptophan. Since it is the first enzyme in the shikimate pathway, it controls the amount of carbon entering the pathway. Enzyme inhibition is the primary method of regulating the amount of carbon entering the pathway. Forms of this enzyme differ between organisms, but can be considered DAHP synthase based upon the reaction that is catalyzed by this enzyme.

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

4-Hydroxy-tetrahydrodipicolinate synthase (EC 4.3.3.7, dihydrodipicolinate synthase, dihydropicolinate synthetase, dihydrodipicolinic acid synthase, L-aspartate-4-semialdehyde hydro-lyase (adding pyruvate and cyclizing), dapA (gene)) is an enzyme with the systematic name L-aspartate-4-semialdehyde hydro-lyase (adding pyruvate and cyclizing; (4S)-4-hydroxy-2,3,4,5-tetrahydro-(2S)-dipicolinate-forming). This enzyme catalyses the following chemical reaction

References


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