Gene Association: PDHB

UniProt Search: PDHB (PROTEIN_CODING)
Function Description: pyruvate dehydrogenase E1 subunit beta

found 28 associated metabolites with current gene based on the text mining result from the pubmed database.

DL-Malic acid

2-Hydroxyethane-1,2-dicarboxylic acid

C4H6O5 (134.0215)


Malic acid (CAS: 6915-15-7) is a tart-tasting organic dicarboxylic acid that plays a role in many sour or tart foods. Apples contain malic acid, which contributes to the sourness of a green apple. Malic acid can make a wine taste tart, although the amount decreases with increasing fruit ripeness (Wikipedia). In its ionized form, malic acid is called malate. Malate is an intermediate of the TCA cycle along with fumarate. It can also be formed from pyruvate as one of the anaplerotic reactions. In humans, malic acid is both derived from food sources and synthesized in the body through the citric acid cycle or Krebs cycle which takes place in the mitochondria. Malates importance to the production of energy in the body during both aerobic and anaerobic conditions is well established. Under aerobic conditions, the oxidation of malate to oxaloacetate provides reducing equivalents to the mitochondria through the malate-aspartate redox shuttle. During anaerobic conditions, where a buildup of excess reducing equivalents inhibits glycolysis, malic acids simultaneous reduction to succinate and oxidation to oxaloacetate is capable of removing the accumulating reducing equivalents. This allows malic acid to reverse hypoxias inhibition of glycolysis and energy production. In studies on rats, it has been found that only tissue malate is depleted following exhaustive physical activity. Other key metabolites from the citric acid cycle needed for energy production were found to be unchanged. Because of this, a deficiency of malic acid has been hypothesized to be a major cause of physical exhaustion. Notably, the administration of malic acid to rats has been shown to elevate mitochondrial malate and increase mitochondrial respiration and energy production. Malic acid has been found to be a metabolite in Aspergillus (Hugo Vanden Bossche, D.W.R. Mackenzie and G. Cauwenbergh. Aspergillus and Aspergillosis, 1987). Acidulant, antioxidant, flavouring agent, flavour enhancer. Not for use in baby foods (GRAS) Malic acid. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=617-48-1 (retrieved 2024-07-01) (CAS RN: 6915-15-7). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). (S)-Malic acid ((S)-2-Hydroxysuccinic acid) is a dicarboxylic acid in naturally occurring form, contributes to the pleasantly sour taste of fruits and is used as a food additive. (S)-Malic acid ((S)-2-Hydroxysuccinic acid) is a dicarboxylic acid in naturally occurring form, contributes to the pleasantly sour taste of fruits and is used as a food additive. Malic acid (Hydroxybutanedioic acid) is a dicarboxylic acid that is naturally found in fruits such as apples and pears. It plays a role in many sour or tart foods. Malic acid (Hydroxybutanedioic acid) is a dicarboxylic acid that is naturally found in fruits such as apples and pears. It plays a role in many sour or tart foods.

   

Acetyl-CoA

{[(2R,3S,4R,5R)-2-({[({[(3R)-3-[(2-{[2-(acetylsulfanyl)ethyl]carbamoyl}ethyl)carbamoyl]-3-hydroxy-2,2-dimethylpropoxy](hydroxy)phosphoryl}oxy)(hydroxy)phosphoryl]oxy}methyl)-5-(6-amino-9H-purin-9-yl)-4-hydroxyoxolan-3-yl]oxy}phosphonic acid

C23H38N7O17P3S (809.1258)


The main function of coenzyme A is to carry acyl groups (such as the acetyl group) or thioesters. Acetyl-CoA is an important molecule itself. It is the precursor to HMG CoA, which is a vital component in cholesterol and ketone synthesis. (wikipedia). acetyl CoA participates in the biosynthesis of fatty acids and sterols, in the oxidation of fatty acids and in the metabolism of many amino acids. It also acts as a biological acetylating agent. The main function of coenzyme A is to carry acyl groups (such as the acetyl group) or thioesters. Acetyl-CoA is an important molecule itself. It is the precursor to HMG CoA, which is a vital component in cholesterol and ketone synthesis. (wikipedia)

   

Lipoamide

5-(1,2-Dithiolan-3-yl)-pentanamide

C8H15NOS2 (205.0595)


Lipoamide is a trivial name for 6,8-dithiooctanoic amide. It is 6,8-dithiooctanoic acids functional form where the carboxyl group is attached to protein (or any other amine) by an amide linkage (containing -NH2) to an amino group. Lipoamide forms a thioester bond, oxidizing the disulfide bond, with acetaldehyde (pyruvate after it has been decarboxylated). It then transfers the acetaldehyde group to CoA which can then continue in the TCA cycle. Lipoamide is an intermediate in glycolysis/gluconeogenesis, citrate cycle (TCA cycle), alanine, aspartate and pyruvate metabolism, and valine, leucine and isoleucine degradation (KEGG:C00248). It is generated from dihydrolipoamide via the enzyme dihydrolipoamide dehydrogenase (EC:1.8.1.4) and then converted to S-glutaryl-dihydrolipoamide via the enzyme oxoglutarate dehydrogenase (EC:1.2.4.2). Lipoamide is the oxidized form of glutathione. (PMID:8957191) KEIO_ID L031; [MS2] KO009031 KEIO_ID L031

   

Ketoleucine

4-methyl-2-oxopentanoic acid

C6H10O3 (130.063)


Ketoleucine is an abnormal metabolite that arises from the incomplete breakdown of branched-chain amino acids. Ketoleucine is both a neurotoxin and a metabotoxin. A neurotoxin causes damage to nerve cells and nerve tissues. A metabotoxin is an endogenously produced metabolite that causes adverse health effects at chronically high levels. Chronically high levels of ketoleucine are associated with maple syrup urine disease (MSUD). MSUD is a metabolic disorder caused by a deficiency of the branched-chain alpha-keto acid dehydrogenase complex (BCKDC), leading to a buildup of the branched-chain amino acids (leucine, isoleucine, and valine) and their toxic by-products (ketoacids) in the blood and urine. The symptoms of MSUD often show in infancy and lead to severe brain damage if untreated. MSUD may also present later depending on the severity of the disease. If left untreated in older individuals, during times of metabolic crisis, symptoms of the condition include uncharacteristically inappropriate, extreme, or erratic behaviour and moods, hallucinations, anorexia, weight loss, anemia, diarrhea, vomiting, dehydration, lethargy, oscillating hypertonia and hypotonia, ataxia, seizures, hypoglycemia, ketoacidosis, opisthotonus, pancreatitis, rapid neurological decline, and coma. In maple syrup urine disease, the brain concentration of branched-chain ketoacids can increase 10- to 20-fold. This leads to a depletion of glutamate and a consequent reduction in the concentration of brain glutamine, aspartate, alanine, and other amino acids. The result is a compromise of energy metabolism because of a failure of the malate-aspartate shuttle and a diminished rate of protein synthesis (PMID: 15930465). Ketoleucine, also known as alpha-ketoisocaproic acid or 2-oxoisocaproate, belongs to short-chain keto acids and derivatives class of compounds. Those are keto acids with an alkyl chain the contains less than 6 carbon atoms. Ketoleucine is slightly soluble (in water) and a weakly acidic compound (based on its pKa). Ketoleucine can be found in a number of food items such as arctic blackberry, sesame, sea-buckthornberry, and soft-necked garlic, which makes ketoleucine a potential biomarker for the consumption of these food products. Ketoleucine can be found primarily in most biofluids, including saliva, blood, cerebrospinal fluid (CSF), and urine, as well as in human muscle, neuron and prostate tissues. Ketoleucine exists in all living species, ranging from bacteria to humans. In humans, ketoleucine is involved in the valine, leucine and isoleucine degradation. Ketoleucine is also involved in several metabolic disorders, some of which include methylmalonate semialdehyde dehydrogenase deficiency, propionic acidemia, 3-methylglutaconic aciduria type IV, and 3-methylglutaconic aciduria type I. Ketoleucine is a non-carcinogenic (not listed by IARC) potentially toxic compound. Ketoleucine is a metabolite that accumulates in Maple Syrup Urine Disease (MSUD) and shown to compromise brain energy metabolism by blocking the respiratory chain (T3DB). 4-Methyl-2-oxopentanoic acid (α-Ketoisocaproic acid), an abnormal metabolite, is both a neurotoxin and a metabotoxin.

   

Dichloroacetate

2,2-dichloroacetic acid

C2H2Cl2O2 (127.9432)


An organochlorine compound comprising acetic acid carrying two chloro substituents at the 2-position. It occurs in nature in seaweed, Asparagopsis taxiformis. KEIO_ID D160 KEIO_ID D034

   

Thiamine pyrophosphate

3-[(4-amino-2-methylpyrimidin-5-yl)methyl]-5-(2-{[hydroxy(phosphonooxy)phosphoryl]oxy}ethyl)-4-methyl-1,3-thiazol-3-ium

[C12H19N4O7P2S]+ (425.045)


Thiamine pyrophosphate is the active form of thiamine, and it serves as a cofactor for several enzymes involved primarily in carbohydrate catabolism. The enzymes are important in the biosynthesis of a number of cell constituents, including neurotransmitters, and for the production of reducing equivalents used in oxidant stress defenses and in biosyntheses and for synthesis of pentoses used as nucleic acid precursors. The chemical structure of TPP is that of an aromatic methylaminopyrimidine ring, linked via a methylene bridge to a methylthiazolium ring with a pyrophosphate group attached to a hydroxyethyl side chain. In non-enzymatic model studies it has been demonstrated that the thiazolium ring can catalyse reactions which are similar to those of TPP-dependent enzymes but several orders of magnitude slower. Using infrared and NMR spectrophotometry it has been shown that the dissociation of the proton from C2 of the thiazolium ring is necessary for catalysis; the abstraction of the proton leads to the formation of a carbanion (ylid) with the potential for a nucleophilic attack on the carbonyl group of the substrate. In all TPP-dependent enzymes the abstraction of the proton from the C2 atom is the first step in catalysis, which is followed by a nucleophilic attack of this carbanion on the substrate. Subsequent cleavage of a C-C bond releases the first product with formation of a second carbanion (2-greek small letter alpha-carbanion or enamine). The formation of this 2-greek small letter alpha-carbanion is the second feature of TPP catalysis common to all TPP-dependent enzymes. Depending on the enzyme and the substrate(s), the reaction intermediates and products differ. Methyl-branched fatty acids, as phytanic acid, undergo peroxisomal beta-oxidation in which they are shortened by 1 carbon atom. This process includes four steps: activation, 2-hydroxylation, thiamine pyrophosphate dependent cleavage and aldehyde dehydrogenation. In the third step, 2-hydroxy-3-methylacyl-CoA is cleaved in the peroxisomal matrix by 2-hydroxyphytanoyl-CoA lyase (2-HPCL), which uses thiamine pyrophosphate (TPP) as cofactor. The thiamine pyrophosphate dependence of the third step is unique in peroxisomal mammalian enzymology. Human pathology due to a deficient alpha-oxidation is mostly linked to mutations in the gene coding for the second enzyme of the sequence, phytanoyl-CoA hydroxylase (EC 1.14.11.18). (PMID: 12694175, 11899071, 9924800) [HMDB] Thiamine pyrophosphate (CAS: 154-87-0) is the active form of thiamine, and it serves as a cofactor for several enzymes involved primarily in carbohydrate catabolism. These enzymes are important in the biosynthesis of several cell constituents, including neurotransmitters, and for the production of reducing equivalents used in oxidant stress defences. The enzymes are also important for the synthesis of pentoses used as nucleic acid precursors. The chemical structure of TPP is that of an aromatic methylaminopyrimidine ring, linked via a methylene bridge to a methylthiazolium ring with a pyrophosphate group attached to a hydroxyethyl side chain. In non-enzymatic model studies, it has been demonstrated that the thiazolium ring can catalyze reactions that are similar to those of TPP-dependent enzymes but several orders of magnitude slower. Using infrared and NMR spectrophotometry it has been shown that the dissociation of the proton from C2 of the thiazolium ring is necessary for catalysis; the abstraction of the proton leads to the formation of a carbanion with the potential for a nucleophilic attack on the carbonyl group of the substrate. In all TPP-dependent enzymes, the abstraction of the proton from the C2 atom is the first step in catalysis, which is followed by a nucleophilic attack of this carbanion on the substrate. Subsequent cleavage of a C-C bond releases the first product with the formation of a second carbanion (enamine). This formation is the second feature of TPP catalysis common to all TPP-dependent enzymes. Depending on the enzyme and the substrate(s), the reaction intermediates and products differ. Methyl-branched fatty acids, as phytanic acid, undergo peroxisomal beta-oxidation in which they are shortened by 1 carbon atom. This process includes four steps: activation, 2-hydroxylation, thiamine pyrophosphate-dependent cleavage, and aldehyde dehydrogenation. In the third step, 2-hydroxy-3-methylacyl-CoA is cleaved in the peroxisomal matrix by 2-hydroxyphytanoyl-CoA lyase (2-HPCL), which uses thiamine pyrophosphate (TPP) as a cofactor. The thiamine pyrophosphate dependence of the third step is unique in peroxisomal mammalian enzymology. Human pathology due to a deficient alpha-oxidation is mostly linked to mutations in the gene coding for the second enzyme of the sequence, phytanoyl-CoA hydroxylase (EC 1.14.11.18) (PMID:12694175, 11899071, 9924800). D018977 - Micronutrients > D014815 - Vitamins KEIO_ID C077

   

Isobutyryl-CoA

{[(2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-4-hydroxy-2-({[hydroxy({hydroxy[(3R)-3-hydroxy-2,2-dimethyl-3-{[2-({2-[(2-methylpropanoyl)sulfanyl]ethyl}carbamoyl)ethyl]carbamoyl}propoxy]phosphoryl}oxy)phosphoryl]oxy}methyl)oxolan-3-yl]oxy}phosphonic acid

C25H42N7O17P3S (837.1571)


Isobutyryl-CoA is a substrate for Acyl-CoA dehydrogenase (short-chain specific, mitochondrial), Acyl-CoA dehydrogenase (medium-chain specific, mitochondrial) and Acyl-CoA dehydrogenase (long-chain specific, mitochondrial). [HMDB] Isobutyryl-CoA is a substrate for Acyl-CoA dehydrogenase (short-chain specific, mitochondrial), Acyl-CoA dehydrogenase (medium-chain specific, mitochondrial) and Acyl-CoA dehydrogenase (long-chain specific, mitochondrial). Acquisition and generation of the data is financially supported in part by CREST/JST.

   

Dihydrolipoamide

Dihydrolipoamide, (+-)-isomer

C8H17NOS2 (207.0752)


Dihydrolipoamide is an intermediate in glycolysis/gluconeogenesis, citrate cycle (TCA cycle), alanine, aspartate and pyruvate metabolism, and valine, leucine and isoleucine degradation (KEGG ID C00579). It is converted to lipoamide via the enzyme dihydrolipoamide dehydrogenase [EC:1.8.1.4]. Dihydrolipoamide is also a substrate of enzyme Acyltransferases [EC 2.3.1.-]. (KEGG) [HMDB]. Dihydrolipoamide is found in many foods, some of which are enokitake, mugwort, welsh onion, and tea. Dihydrolipoamide is an intermediate in glycolysis/gluconeogenesis, citrate cycle (TCA cycle), alanine, aspartate and pyruvate metabolism, and valine, leucine and isoleucine degradation (KEGG ID C00579). It is converted to lipoamide via the enzyme dihydrolipoamide dehydrogenase [EC:1.8.1.4]. Dihydrolipoamide is also a substrate of enzyme Acyltransferases [EC 2.3.1.-]. (KEGG).

   

Pentanoyl-CoA

{[(2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-4-hydroxy-2-({[hydroxy({[hydroxy({3-hydroxy-2,2-dimethyl-3-[(2-{[2-(pentanoylsulfanyl)ethyl]carbamoyl}ethyl)carbamoyl]propoxy})phosphoryl]oxy})phosphoryl]oxy}methyl)oxolan-3-yl]oxy}phosphonic acid

C26H44N7O17P3S (851.1727)


Pentanoyl CoA is an acyl-CoA with the C-5 Acyl chain. Acyl-CoA (or formyl-CoA) is a coenzyme involved in the metabolism of fatty acids. It is a temporary compound formed when coenzyme A (CoA) attaches to the end of a long-chain fatty acid, inside living cells. The CoA is then removed from the chain, carrying two carbons from the chain with it, forming acetyl-CoA. This is then used in the citric acid cycle to start a chain of reactions, eventually forming many adenosine triphosphates. To be oxidatively degraded, a fatty acid must first be activated in a two-step reaction catalyzed by acyl-CoA synthetase. First, the fatty acid displaces the diphosphate group of ATP, then coenzyme A (HSCoA) displaces the AMP group to form an Acyl-CoA. The acyladenylate product of the first step has a large free energy of hydrolysis and conserves the free energy of the cleaved phosphoanhydride bond in ATP. The second step, transfer of the acyl group to CoA (the same molecule that carries acetyl groups as acetyl-CoA), conserves free energy in the formation of a thioester bond. Consequently, the overall reaction Fatty acid + CoA + ATP <=> Acyl-CoA + AMP + PPi has a free energy change near zero. Subsequent hydrolysis of the product PPi (by the enzyme inorganic pyrophosphatase) is highly exergonic, and this reaction makes the formation of acyl-CoA spontaneous and irreversible. Fatty acids are activated in the cytosol, but oxidation occurs in the mitochondria. Because there is no transport protein for CoA adducts, acyl groups must enter the mitochondria via a shuttle system involving the small molecule carnitine. Pentanoyl coA is a acyl-CoA with the C-5 Acyl chain.

   

Isovaleryl-CoA

(2R)-4-({[({[(2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-4-hydroxy-3-(phosphonooxy)oxolan-2-yl]methoxy}(hydroxy)phosphoryl)oxy](hydroxy)phosphoryl}oxy)-2-hydroxy-3,3-dimethyl-N-[2-({2-[(3-methylbutanoyl)sulfanyl]ethyl}-C-hydroxycarbonimidoyl)ethyl]butanimidic acid

C26H44N7O17P3S (851.1727)


Isovaleryl-CoA is an intermediate metabolite in the catabolic pathway of leucine. The accumulation of derivatives of isovaleryl-CoA occurs in patients affected with isovaleric acidemia (IVA, OMIM 243500) an autosomal recessive inborn error of leucine metabolism caused by a deficiency of the mitochondrial enzyme isovaleryl-CoA dehydrogenase (IVD, EC 1.3.99.10, a flavoenzyme that catalyzes the conversion of isovaleryl-CoA to 3-methylcrotonyl-CoA). IVA was the first organic acidemia recognized in humans and can cause significant morbidity and mortality. Early diagnosis and treatment with a protein restricted diet and supplementation with carnitine and glycine are effective in promoting normal development in severely affected individuals. Both intra- and interfamilial variability have been recognized. Initially, two phenotypes with either an acute neonatal or a chronic intermittent presentation were described. More recently, a third group of individuals with mild biochemical abnormalities who can be asymptomatic have been identified through newborn screening of blood spots by tandem mass spectrometry. The majority of patients with IVA today are diagnosed pre-symptomatically through newborn screening by use of MS/MS which reveals elevations of the marker metabolite C5 acylcarnitine in dried blood spots. C5 acylcarnitine represents a mixture of isomers (isovalerylcarnitine, 2-methylbutyrylcarnitine, and pivaloylcarnitine). (PMID: 16602101, Am J Med Genet C Semin Med Genet. 2006 May 15;142(2):95-103.) [HMDB]. Isovaleryl-CoA is found in many foods, some of which are purple laver, alaska wild rhubarb, macadamia nut (m. tetraphylla), and green zucchini. Isovaleryl-CoA is an intermediate metabolite in the catabolic pathway of leucine. The accumulation of derivatives of isovaleryl-CoA occurs in patients affected with isovaleric acidemia (IVA, OMIM: 243500), an autosomal recessive inborn error of leucine metabolism caused by a deficiency of the mitochondrial enzyme isovaleryl-CoA dehydrogenase (IVD, EC 1.3.99.10), a flavoenzyme that catalyzes the conversion of isovaleryl-CoA into 3-methylcrotonyl-CoA. IVA was the first organic acidemia recognized in humans and can cause significant morbidity and mortality. Early diagnosis and treatment with a protein-restricted diet and supplementation with carnitine and glycine are effective in promoting normal development in severely affected individuals. Both intra- and interfamilial variability have been recognized. Initially, two phenotypes with either an acute neonatal or a chronic intermittent presentation were described. More recently, a third group of individuals with mild biochemical abnormalities who can be asymptomatic have been identified through newborn screening of blood spots by tandem mass spectrometry. The majority of patients with IVA today are diagnosed pre-symptomatically through newborn screening by use of MS/MS which reveals elevations of the marker metabolite C5 acylcarnitine in dried blood spots. C5 Acylcarnitine represents a mixture of isomers (isovalerylcarnitine, 2-methylbutyrylcarnitine, and pivaloylcarnitine) (PMID: 16602101).

   

2,6-DICHLOROPHENOL

2,6-DICHLOROPHENOL

C6H4Cl2O (161.9639)


   

Aloperine

rel-(6R,6aR,13R,13aS)-2,3,4,6,6a,7,8,9,10,12,13,13a-Dodecahydro-1H-6,13-methanodipyrido[1,2-a:3,2-e]azocine

C15H24N2 (232.1939)


Aloperine is a natural product found in Thinicola incana, Sophora alopecuroides, and other organisms with data available. Aloperine is an alkaloid in sophora plants such as Sophora alopecuroides L, which has shown anti-cancer, anti-inflammatory and anti-virus properties[1]. Aloperine is widely used to treat patients with allergic contact dermatitis eczema and other skin inflammation in China[2]. Aloperine induces apoptosis and autophagy in HL-60 cells[1]. Aloperine is an alkaloid in sophora plants such as Sophora alopecuroides L, which has shown anti-cancer, anti-inflammatory and anti-virus properties[1]. Aloperine is widely used to treat patients with allergic contact dermatitis eczema and other skin inflammation in China[2]. Aloperine induces apoptosis and autophagy in HL-60 cells[1].

   

2,4-Dinitrophenylhydrazine

2,4-Dinitro-3,5,6-trideuterophenylhydrazine

C6H6N4O4 (198.0389)


   

Ketoleucine

4-methyl-2-oxopentanoic acid

C6H10O3 (130.063)


4-Methyl-2-oxopentanoic acid (α-Ketoisocaproic acid), an abnormal metabolite, is both a neurotoxin and a metabotoxin.

   

lipoamide

5-(1,2-dithiolan-3-yl)pentanamide

C8H15NOS2 (205.0595)


A monocarboxylic acid amide resulting from the formal condensation of the carboxy group of lipoic acid with ammonia.

   

L-Malic acid

(2S)-2-hydroxybutanedioic acid

C4H6O5 (134.0215)


An optically active form of malic acid having (S)-configuration. Occurs naturally in apples and various other fruits. Flavour enhancer, pH control agent. L-Malic acid is found in many foods, some of which are mulberry, black cabbage, european plum, and fig. (S)-Malic acid ((S)-2-Hydroxysuccinic acid) is a dicarboxylic acid in naturally occurring form, contributes to the pleasantly sour taste of fruits and is used as a food additive. (S)-Malic acid ((S)-2-Hydroxysuccinic acid) is a dicarboxylic acid in naturally occurring form, contributes to the pleasantly sour taste of fruits and is used as a food additive.

   

Ketoleucine

4-methyl-2-oxopentanoic acid

C6H10O3 (130.063)


A 2-oxo monocarboxylic acid that is pentanoic acid (valeric acid) substituted with a keto group at C-2 and a methyl group at C-4. A metabolite that has been found to accumulate in maple syrup urine disease. 4-Methyl-2-oxopentanoic acid (α-Ketoisocaproic acid), an abnormal metabolite, is both a neurotoxin and a metabotoxin.

   

Acetyl-CoA

Acetyl coenzyme A

C23H38N7O17P3S (809.1258)


An acyl-CoA having acetyl as its S-acetyl component.

   

CoA 5:0

3-methylbutanoyl-coenzyme A;3-methylbutyryl-CoA;3-methylbutyryl-coenzyme A;beta-methylbutanoyl-CoA;beta-methylbutanoyl-coenzyme A;beta-methylbutyryl-CoA;beta-methylbutyryl-coenzyme A;isovaleryl-coenzyme A

C26H44N7O17P3S (851.1727)


   

CoA 4:0

{[(2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-4-hydroxy-2-({[hydroxy({hydroxy[(3R)-3-hydroxy-2,2-dimethyl-3-{[2-({2-[(2-methylpropanoyl)sulfanyl]ethyl}carbamoyl)ethyl]carbamoyl}propoxy]phosphoryl}oxy)phosphoryl]oxy}methyl)oxolan-3-yl]oxy}phosphonic acid

C25H42N7O17P3S (837.1571)


   

dihydrolipoamide

6,8-disulfanyloctanimidic acid

C8H17NOS2 (207.0752)


   

97-67-6

(S)-(−)-2-Hydroxysuccinic acid

C4H6O5 (134.0215)


(S)-Malic acid ((S)-2-Hydroxysuccinic acid) is a dicarboxylic acid in naturally occurring form, contributes to the pleasantly sour taste of fruits and is used as a food additive. (S)-Malic acid ((S)-2-Hydroxysuccinic acid) is a dicarboxylic acid in naturally occurring form, contributes to the pleasantly sour taste of fruits and is used as a food additive.

   

Pentanoyl-CoA

{[(2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-4-hydroxy-2-({[hydroxy({[hydroxy({3-hydroxy-2,2-dimethyl-3-[(2-{[2-(pentanoylsulfanyl)ethyl]carbamoyl}ethyl)carbamoyl]propoxy})phosphoryl]oxy})phosphoryl]oxy}methyl)oxolan-3-yl]oxy}phosphonic acid

C26H44N7O17P3S (851.1727)


Pentanoyl CoA is an acyl-CoA with the C-5 Acyl chain. Acyl-CoA (or formyl-CoA) is a coenzyme involved in the metabolism of fatty acids. It is a temporary compound formed when coenzyme A (CoA) attaches to the end of a long-chain fatty acid, inside living cells. The CoA is then removed from the chain, carrying two carbons from the chain with it, forming acetyl-CoA. This is then used in the citric acid cycle to start a chain of reactions, eventually forming many adenosine triphosphates. To be oxidatively degraded, a fatty acid must first be activated in a two-step reaction catalyzed by acyl-CoA synthetase. First, the fatty acid displaces the diphosphate group of ATP, then coenzyme A (HSCoA) displaces the AMP group to form an Acyl-CoA. The acyladenylate product of the first step has a large free energy of hydrolysis and conserves the free energy of the cleaved phosphoanhydride bond in ATP. The second step, transfer of the acyl group to CoA (the same molecule that carries acetyl groups as acetyl-CoA), conserves free energy in the formation of a thioester bond. Consequently, the overall reaction Fatty acid + CoA + ATP <=> Acyl-CoA + AMP + PPi has a free energy change near zero. Subsequent hydrolysis of the product PPi (by the enzyme inorganic pyrophosphatase) is highly exergonic, and this reaction makes the formation of acyl-CoA spontaneous and irreversible. Fatty acids are activated in the cytosol, but oxidation occurs in the mitochondria. Because there is no transport protein for CoA adducts, acyl groups must enter the mitochondria via a shuttle system involving the small molecule carnitine. Pentanoyl coA is a acyl-CoA with the C-5 Acyl chain.

   

Isovaleryl-CoA

Isovaleryl-CoA

C26H44N7O17P3S (851.1727)


A methylbutanoyl-CoA is the S-isovaleryl derivative of coenzyme A.

   

Thiamine diphosphate

Thiamine diphosphate

C12H19N4O7P2S+ (425.045)


D018977 - Micronutrients > D014815 - Vitamins

   

Isobutyryl-CoA

Isobutyryl-CoA

C25H42N7O17P3S (837.1571)


A short-chain, methyl-branched fatty acyl-CoA that is the S-isobutyryl derivative of coenzyme A.

   

pentanoyl-CoA

pentanoyl-CoA

C26H44N7O17P3S (851.1727)


A short-chain fatty acyl-CoA that results from the formal condensation of the thiol group of coenzyme A with the carboxy group of pentanoic acid.

   

2,4-Dinitrophenylhydrazine

2,4-Dinitrophenylhydrazine

C6H6N4O4 (198.0389)