PathWhiz ID | Pathway | Meta Data |
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PW273007View Pathway |
Valine DegradationStreptomyces avermitilis
Valine degradation is a crucial metabolic pathway involved in breaking down the essential amino acid valine into molecules that can enter the tricarboxylic acid (TCA) cycle, thereby contributing to energy production and various biosynthetic processes. This pathway involves several enzymatic reactions that sequentially convert valine into succinyl-CoA, a key TCA cycle intermediate. This degradation process not only aids in cellular energy generation but also provides precursors for the synthesis of other important biomolecules.
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Creator: Julia Wakoli Created On: June 11, 2024 at 12:56 Last Updated: June 11, 2024 at 12:56 |
PW002489View Pathway |
Valine DegradationSaccharomyces cerevisiae
The degradation of valine starts either in the mitochondria or the cytosol. L-valine reacts with 2-oxoglutarate through a branch-chain amino acid aminotransferase resulting in the release of L-glutamate and 3-methyl-2-oxobutanoate. The latter compound reacts with 2-oxoisovalerate carboxy-lyase resulting in the release of carbon dioxide and isobutanal. Isobutanal can then be turned into isobutanol through a alcohol dehydrogenase
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Creator: miguel ramirez Created On: February 29, 2016 at 11:30 Last Updated: February 29, 2016 at 11:30 |
PW088346View Pathway |
Valine, Leucine, and Isoleucine DegradationRattus norvegicus
Valine, isoleuciine, and leucine are essential amino acids and are identified as the branched-chain amino acids (BCAAs). The catabolism of all three amino acids starts in muscle and yields NADH and FADH2 which can be utilized for ATP generation. The catabolism of all three of these amino acids uses the same enzymes in the first two steps. The first step in each case is a transamination using a single BCAA aminotransferase, with α-ketoglutarate as the amine acceptor. As a result, three different α-keto acids are produced and are oxidized using a common branched-chain α-keto acid dehydrogenase (BCKD), yielding the three different CoA derivatives. Isovaleryl-CoA is produced from leucine by these two reactions, alpha-methylbutyryl-CoA from isoleucine, and isobutyryl-CoA from valine. These acyl-CoA’s undergo dehydrogenation, catalyzed by three different but related enzymes, and the breakdown pathways then diverge. Leucine is ultimately converted into acetyl-CoA and acetoacetate; isoleucine into acetyl-CoA and succinyl-CoA; and valine into propionyl-CoA (and subsequently succinyl-CoA). Under fasting conditions, substantial amounts of all three amino acids are generated by protein breakdown. In muscle, the final products of leucine, isoleucine, and valine catabolism can be fully oxidized via the citric acid cycle; in the liver, they can be directed toward the synthesis of ketone bodies (acetoacetate and acetyl-CoA) and glucose (succinyl-CoA). Because isoleucine catabolism terminates with the production of acetyl-CoA and propionyl-CoA, it is both glucogenic and ketogenic. Because leucine gives rise to acetyl-CoA and acetoacetyl-CoA, it is classified as strictly ketogenic.
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Creator: Ana Marcu Created On: August 10, 2018 at 14:10 Last Updated: August 10, 2018 at 14:10 |
PW088253View Pathway |
Valine, Leucine, and Isoleucine DegradationBos taurus
Valine, isoleuciine, and leucine are essential amino acids and are identified as the branched-chain amino acids (BCAAs). The catabolism of all three amino acids starts in muscle and yields NADH and FADH2 which can be utilized for ATP generation. The catabolism of all three of these amino acids uses the same enzymes in the first two steps. The first step in each case is a transamination using a single BCAA aminotransferase, with α-ketoglutarate as the amine acceptor. As a result, three different α-keto acids are produced and are oxidized using a common branched-chain α-keto acid dehydrogenase (BCKD), yielding the three different CoA derivatives. Isovaleryl-CoA is produced from leucine by these two reactions, alpha-methylbutyryl-CoA from isoleucine, and isobutyryl-CoA from valine. These acyl-CoA’s undergo dehydrogenation, catalyzed by three different but related enzymes, and the breakdown pathways then diverge. Leucine is ultimately converted into acetyl-CoA and acetoacetate; isoleucine into acetyl-CoA and succinyl-CoA; and valine into propionyl-CoA (and subsequently succinyl-CoA). Under fasting conditions, substantial amounts of all three amino acids are generated by protein breakdown. In muscle, the final products of leucine, isoleucine, and valine catabolism can be fully oxidized via the citric acid cycle; in the liver, they can be directed toward the synthesis of ketone bodies (acetoacetate and acetyl-CoA) and glucose (succinyl-CoA). Because isoleucine catabolism terminates with the production of acetyl-CoA and propionyl-CoA, it is both glucogenic and ketogenic. Because leucine gives rise to acetyl-CoA and acetoacetyl-CoA, it is classified as strictly ketogenic.
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Creator: Ana Marcu Created On: August 10, 2018 at 11:56 Last Updated: August 10, 2018 at 11:56 |
PW064671View Pathway |
Valine, Leucine, and Isoleucine DegradationMus musculus
Valine, isoleuciine, and leucine are essential amino acids and are identified as the branched-chain amino acids (BCAAs). The catabolism of all three amino acids starts in muscle and yields NADH and FADH2 which can be utilized for ATP generation. The catabolism of all three of these amino acids uses the same enzymes in the first two steps. The first step in each case is a transamination using a single BCAA aminotransferase, with α-ketoglutarate as the amine acceptor. As a result, three different α-keto acids are produced and are oxidized using a common branched-chain α-keto acid dehydrogenase (BCKD), yielding the three different CoA derivatives. Isovaleryl-CoA is produced from leucine by these two reactions, alpha-methylbutyryl-CoA from isoleucine, and isobutyryl-CoA from valine. These acyl-CoA’s undergo dehydrogenation, catalyzed by three different but related enzymes, and the breakdown pathways then diverge. Leucine is ultimately converted into acetyl-CoA and acetoacetate; isoleucine into acetyl-CoA and succinyl-CoA; and valine into propionyl-CoA (and subsequently succinyl-CoA). Under fasting conditions, substantial amounts of all three amino acids are generated by protein breakdown. In muscle, the final products of leucine, isoleucine, and valine catabolism can be fully oxidized via the citric acid cycle; in the liver, they can be directed toward the synthesis of ketone bodies (acetoacetate and acetyl-CoA) and glucose (succinyl-CoA). Because isoleucine catabolism terminates with the production of acetyl-CoA and propionyl-CoA, it is both glucogenic and ketogenic. Because leucine gives rise to acetyl-CoA and acetoacetyl-CoA, it is classified as strictly ketogenic.
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Creator: Carin Li Created On: January 22, 2018 at 00:27 Last Updated: January 22, 2018 at 00:27 |
PW000051View Pathway |
Valine, Leucine, and Isoleucine DegradationHomo sapiens
Valine, isoleuciine, and leucine are essential amino acids and are identified as the branched-chain amino acids (BCAAs). The catabolism of all three amino acids starts in muscle and yields NADH and FADH2 which can be utilized for ATP generation. The catabolism of all three of these amino acids uses the same enzymes in the first two steps. The first step in each case is a transamination using a single BCAA aminotransferase, with α-ketoglutarate as the amine acceptor. As a result, three different α-keto acids are produced and are oxidized using a common branched-chain α-keto acid dehydrogenase (BCKD), yielding the three different CoA derivatives. Isovaleryl-CoA is produced from leucine by these two reactions, alpha-methylbutyryl-CoA from isoleucine, and isobutyryl-CoA from valine. These acyl-CoA’s undergo dehydrogenation, catalyzed by three different but related enzymes, and the breakdown pathways then diverge. Leucine is ultimately converted into acetyl-CoA and acetoacetate; isoleucine into acetyl-CoA and succinyl-CoA; and valine into propionyl-CoA (and subsequently succinyl-CoA). Under fasting conditions, substantial amounts of all three amino acids are generated by protein breakdown. In muscle, the final products of leucine, isoleucine, and valine catabolism can be fully oxidized via the citric acid cycle; in the liver, they can be directed toward the synthesis of ketone bodies (acetoacetate and acetyl-CoA) and glucose (succinyl-CoA). Because isoleucine catabolism terminates with the production of acetyl-CoA and propionyl-CoA, it is both glucogenic and ketogenic. Because leucine gives rise to acetyl-CoA and acetoacetyl-CoA, it is classified as strictly ketogenic.
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Creator: WishartLab Created On: August 01, 2013 at 13:54 Last Updated: August 01, 2013 at 13:54 |
PW064779View Pathway |
Valine,leucine,isoleucine degradationHomo sapiens
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Creator: Carin Li Created On: June 25, 2018 at 14:08 Last Updated: June 25, 2018 at 14:08 |
PW132221View Pathway |
Valproate bismuth Drug MetabolismHomo sapiens
Valproate bismuth is a drug that is not metabolized by the human body as determined by current research and biotransformer analysis. Valproate bismuth passes through the liver and is then excreted from the body mainly through the kidney.
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Creator: Ray Kruger Created On: September 21, 2023 at 20:14 Last Updated: September 21, 2023 at 20:14 |
PW146698View Pathway |
drug action
Valproate bismuth Drug Metabolism Action PathwayHomo sapiens
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Creator: Ray Kruger Created On: October 07, 2023 at 18:49 Last Updated: October 07, 2023 at 18:49 |
PW124228View Pathway |
drug action
Valproate w/ Template (New) Drug Action Action PathwayHomo sapiens
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Creator: Nitya Khetarpal Created On: October 15, 2020 at 21:45 Last Updated: October 15, 2020 at 21:45 |