PathWhiz ID | Pathway | Meta Data |
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PW124937View Pathway |
Acylcarnitine 3-[(1S,2R,5S)-5-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-3-oxocyclopentyl]propanoylcarnitineHomo sapiens
3-[(1S,2R,5S)-5-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-3-oxocyclopentyl]propanoylcarnitine is an acylcarnitine. The general role of acylcarnitines is to transport acyl-groups, organic acids and fatty acids, from the cytoplasm into the mitochondria so that they can be broken down to produce energy. As part of this process, 3-[(1S,2R,5S)-5-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-3-oxocyclopentyl]propanoic acid is first transported into the cell via the long-chain fatty acid transport protein 1 (FATP1). Once inside the cell it undergoes a reaction to form an acyl-CoA derivative called 3-[(1S,2R,5S)-5-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-3-oxocyclopentyl]propanoyl-CoA. This reaction is facilitated by the long-chain fatty-acid CoA ligase 1 protein, which adds a CoA moiety to appropriate acyl groups. Many acyl-CoA groups will then further react with other zwitterionic compounds such as carnitine (to form acylcarnitines) and amino acids (to form acyl amides). The carnitine needed to form acylcarnitines inside the cell is transported into the cell by the organic cation/carnitine transporter 2. In forming an acylcarnitine derivative, 3-[(1S,2R,5S)-5-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-3-oxocyclopentyl]propanoyl-CoA reacts with L-carnitine to form 3-[(1S,2R,5S)-5-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-3-oxocyclopentyl]propanoylcarnitine. This reaction is catalyzed by carnitine O-palmitoyltransferase. This enzyme resides in the mitochondrial outer membrane. While this reaction takes place, the 3-[(1S,2R,5S)-5-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-3-oxocyclopentyl]propanoylcarnitine is moved into the mitochondrial intermembrane space. Following the reaction, the newly synthesized acylcarnitine is transported into the mitochondrial matrix by a mitochondrial carnitine/acylcarnitine carrier protein found in the mitochondrial inner membrane. Once in the matrix, 3-[(1S,2R,5S)-5-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-3-oxocyclopentyl]propanoylcarnitine can react with the carnitine O-palmitoyltransferase 2 enzyme found in the mitochondrial inner membrane to once again form 3-[(1S,2R,5S)-5-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-3-oxocyclopentyl]propanoyl-CoA and L-carnitine. 3-[(1S,2R,5S)-5-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-3-oxocyclopentyl]propanoyl-CoA then enters into the mitochondrial beta-oxidation pathway to form aceytl-CoA. Acetyl-CoA can go on to enter the TCA cycle, or it can react with L-carnitine to form L-acetylcarnitine in a reaction catalyzed by Carnitine O-acetyltransferase. This reaction can occur in both directions, and L-acetylcarnitine and CoA can react to form acetyl-CoA and L-carnitine in certain circumstances. Finally, acetyl-CoA in the cytosol can be catalyzed by acetyl-CoA carboxylase 1 to form malonyl-CoA, which inhibits the action of carnitine O-palmitoyltransferase 1, thereby preventing 3-[(1S,2R,5S)-5-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-3-oxocyclopentyl]propanoylcarnitine from forming and thereby preventing it from being transported into the mitochondria.
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Creator: Jeanne Coleongco Created On: April 16, 2021 at 17:54 Last Updated: April 16, 2021 at 17:54 |
PW125913View Pathway |
Acylcarnitine 3-[(2-oxoacetyl)oxy]-4-(trimethylazaniumyl)butanoateHomo sapiens
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Creator: Jeanne Coleongco Created On: April 29, 2021 at 16:30 Last Updated: April 29, 2021 at 16:30 |
PW124990View Pathway |
Acylcarnitine 3-[(2R)-2-hydroxy-3-methyl-3-[(phosphonooxy)methyl]butanamido]propanoylcarnitineHomo sapiens
3-[(2R)-2-hydroxy-3-methyl-3-[(phosphonooxy)methyl]butanamido]propanoylcarnitine is an acylcarnitine. The general role of acylcarnitines is to transport acyl-groups, organic acids and fatty acids, from the cytoplasm into the mitochondria so that they can be broken down to produce energy. As part of this process, 3-[(2R)-2-hydroxy-3-methyl-3-[(phosphonooxy)methyl]butanamido]propanoic acid is first transported into the cell via the long-chain fatty acid transport protein 1 (FATP1). Once inside the cell it undergoes a reaction to form an acyl-CoA derivative called 3-[(2R)-2-hydroxy-3-methyl-3-[(phosphonooxy)methyl]butanamido]propanoyl-CoA. This reaction is facilitated by the long-chain fatty-acid CoA ligase 1 protein, which adds a CoA moiety to appropriate acyl groups. Many acyl-CoA groups will then further react with other zwitterionic compounds such as carnitine (to form acylcarnitines) and amino acids (to form acyl amides). The carnitine needed to form acylcarnitines inside the cell is transported into the cell by the organic cation/carnitine transporter 2. In forming an acylcarnitine derivative, 3-[(2R)-2-hydroxy-3-methyl-3-[(phosphonooxy)methyl]butanamido]propanoyl-CoA reacts with L-carnitine to form 3-[(2R)-2-hydroxy-3-methyl-3-[(phosphonooxy)methyl]butanamido]propanoylcarnitine. This reaction is catalyzed by carnitine O-palmitoyltransferase. This enzyme resides in the mitochondrial outer membrane. While this reaction takes place, the 3-[(2R)-2-hydroxy-3-methyl-3-[(phosphonooxy)methyl]butanamido]propanoylcarnitine is moved into the mitochondrial intermembrane space. Following the reaction, the newly synthesized acylcarnitine is transported into the mitochondrial matrix by a mitochondrial carnitine/acylcarnitine carrier protein found in the mitochondrial inner membrane. Once in the matrix, 3-[(2R)-2-hydroxy-3-methyl-3-[(phosphonooxy)methyl]butanamido]propanoylcarnitine can react with the carnitine O-palmitoyltransferase 2 enzyme found in the mitochondrial inner membrane to once again form 3-[(2R)-2-hydroxy-3-methyl-3-[(phosphonooxy)methyl]butanamido]propanoyl-CoA and L-carnitine. 3-[(2R)-2-hydroxy-3-methyl-3-[(phosphonooxy)methyl]butanamido]propanoyl-CoA then enters into the mitochondrial beta-oxidation pathway to form aceytl-CoA. Acetyl-CoA can go on to enter the TCA cycle, or it can react with L-carnitine to form L-acetylcarnitine in a reaction catalyzed by Carnitine O-acetyltransferase. This reaction can occur in both directions, and L-acetylcarnitine and CoA can react to form acetyl-CoA and L-carnitine in certain circumstances. Finally, acetyl-CoA in the cytosol can be catalyzed by acetyl-CoA carboxylase 1 to form malonyl-CoA, which inhibits the action of carnitine O-palmitoyltransferase 1, thereby preventing 3-[(2R)-2-hydroxy-3-methyl-3-[(phosphonooxy)methyl]butanamido]propanoylcarnitine from forming and thereby preventing it from being transported into the mitochondria.
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Creator: Jeanne Coleongco Created On: April 16, 2021 at 18:19 Last Updated: April 16, 2021 at 18:19 |
PW124777View Pathway |
Acylcarnitine 3-ButenylcarnitineHomo sapiens
3-Butenylcarnitine is an acylcarnitine. The general role of acylcarnitines is to transport acyl-groups, organic acids and fatty acids, from the cytoplasm into the mitochondria so that they can be broken down to produce energy. As part of this process, 3-Butenic acid is first transported into the cell via the long-chain fatty acid transport protein 1 (FATP1). Once inside the cell it undergoes a reaction to form an acyl-CoA derivative called 3-Butenyl-CoA. This reaction is facilitated by the long-chain fatty-acid CoA ligase 1 protein, which adds a CoA moiety to appropriate acyl groups. Many acyl-CoA groups will then further react with other zwitterionic compounds such as carnitine (to form acylcarnitines) and amino acids (to form acyl amides). The carnitine needed to form acylcarnitines inside the cell is transported into the cell by the organic cation/carnitine transporter 2. In forming an acylcarnitine derivative, 3-Butenyl-CoA reacts with L-carnitine to form 3-Butenylcarnitine. This reaction is catalyzed by carnitine O-palmitoyltransferase. This enzyme resides in the mitochondrial outer membrane. While this reaction takes place, the 3-Butenylcarnitine is moved into the mitochondrial intermembrane space. Following the reaction, the newly synthesized acylcarnitine is transported into the mitochondrial matrix by a mitochondrial carnitine/acylcarnitine carrier protein found in the mitochondrial inner membrane. Once in the matrix, 3-Butenylcarnitine can react with the carnitine O-palmitoyltransferase 2 enzyme found in the mitochondrial inner membrane to once again form 3-Butenyl-CoA and L-carnitine. 3-Butenyl-CoA then enters into the mitochondrial beta-oxidation pathway to form aceytl-CoA. Acetyl-CoA can go on to enter the TCA cycle, or it can react with L-carnitine to form L-acetylcarnitine in a reaction catalyzed by Carnitine O-acetyltransferase. This reaction can occur in both directions, and L-acetylcarnitine and CoA can react to form acetyl-CoA and L-carnitine in certain circumstances. Finally, acetyl-CoA in the cytosol can be catalyzed by acetyl-CoA carboxylase 1 to form malonyl-CoA, which inhibits the action of carnitine O-palmitoyltransferase 1, thereby preventing 3-Butenylcarnitine from forming and thereby preventing it from being transported into the mitochondria.
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Creator: Jeanne Coleongco Created On: April 16, 2021 at 16:13 Last Updated: April 16, 2021 at 16:13 |
PW125316View Pathway |
Acylcarnitine 3-DecenoylcarnitineHomo sapiens
3-Decenoylcarnitine is an acylcarnitine. The general role of acylcarnitines is to transport acyl-groups, organic acids and fatty acids, from the cytoplasm into the mitochondria so that they can be broken down to produce energy. As part of this process, 3-decenoic acid is first transported into the cell via the long-chain fatty acid transport protein 1 (FATP1). Once inside the cell it undergoes a reaction to form an acyl-CoA derivative called 3-decenoyl-CoA. This reaction is facilitated by the long-chain fatty-acid CoA ligase 1 protein, which adds a CoA moiety to appropriate acyl groups. Many acyl-CoA groups will then further react with other zwitterionic compounds such as carnitine (to form acylcarnitines) and amino acids (to form acyl amides). The carnitine needed to form acylcarnitines inside the cell is transported into the cell by the organic cation/carnitine transporter 2. In forming an acylcarnitine derivative, 3-decenoyl-CoA reacts with L-carnitine to form 3-decenoylcarnitine. This reaction is catalyzed by carnitine O-palmitoyltransferase. This enzyme resides in the mitochondrial outer membrane. While this reaction takes place, the 3-decenoylcarnitine is moved into the mitochondrial intermembrane space. Following the reaction, the newly synthesized acylcarnitine is transported into the mitochondrial matrix by a mitochondrial carnitine/acylcarnitine carrier protein found in the mitochondrial inner membrane. Once in the matrix, 3-decenoylcarnitine can react with the carnitine O-palmitoyltransferase 2 enzyme found in the mitochondrial inner membrane to once again form 3-decenoyl-CoA and L-carnitine. 3-Decenoyl-CoA then enters into the mitochondrial beta-oxidation pathway to form aceytl-CoA. Acetyl-CoA can go on to enter the TCA cycle, or it can react with L-carnitine to form L-acetylcarnitine in a reaction catalyzed by Carnitine O-acetyltransferase. This reaction can occur in both directions, and L-acetylcarnitine and CoA can react to form acetyl-CoA and L-carnitine in certain circumstances. Finally, acetyl-CoA in the cytosol can be catalyzed by acetyl-CoA carboxylase 1 to form malonyl-CoA, which inhibits the action of carnitine O-palmitoyltransferase 1, thereby preventing 3-decenoylcarnitine from forming and thereby preventing it from being transported into the mitochondria.
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Creator: Jeanne Coleongco Created On: April 16, 2021 at 23:36 Last Updated: April 16, 2021 at 23:36 |
PW125464View Pathway |
Acylcarnitine 3-DodecenoylcarnitineHomo sapiens
3-Dodecenoylcarnitine is an acylcarnitine. The general role of acylcarnitines is to transport acyl-groups, organic acids and fatty acids, from the cytoplasm into the mitochondria so that they can be broken down to produce energy. As part of this process, 3-dodecenoic acid is first transported into the cell via the long-chain fatty acid transport protein 1 (FATP1). Once inside the cell it undergoes a reaction to form an acyl-CoA derivative called 3-dodecenoyl-CoA. This reaction is facilitated by the long-chain fatty-acid CoA ligase 1 protein, which adds a CoA moiety to appropriate acyl groups. Many acyl-CoA groups will then further react with other zwitterionic compounds such as carnitine (to form acylcarnitines) and amino acids (to form acyl amides). The carnitine needed to form acylcarnitines inside the cell is transported into the cell by the organic cation/carnitine transporter 2. In forming an acylcarnitine derivative, 3-dodecenoyl-CoA reacts with L-carnitine to form 3-dodecenoylcarnitine. This reaction is catalyzed by carnitine O-palmitoyltransferase. This enzyme resides in the mitochondrial outer membrane. While this reaction takes place, the 3-dodecenoylcarnitine is moved into the mitochondrial intermembrane space. Following the reaction, the newly synthesized acylcarnitine is transported into the mitochondrial matrix by a mitochondrial carnitine/acylcarnitine carrier protein found in the mitochondrial inner membrane. Once in the matrix, 3-dodecenoylcarnitine can react with the carnitine O-palmitoyltransferase 2 enzyme found in the mitochondrial inner membrane to once again form 3-dodecenoyl-CoA and L-carnitine. 3-Dodecenoyl-CoA then enters into the mitochondrial beta-oxidation pathway to form aceytl-CoA. Acetyl-CoA can go on to enter the TCA cycle, or it can react with L-carnitine to form L-acetylcarnitine in a reaction catalyzed by Carnitine O-acetyltransferase. This reaction can occur in both directions, and L-acetylcarnitine and CoA can react to form acetyl-CoA and L-carnitine in certain circumstances. Finally, acetyl-CoA in the cytosol can be catalyzed by acetyl-CoA carboxylase 1 to form malonyl-CoA, which inhibits the action of carnitine O-palmitoyltransferase 1, thereby preventing 3-dodecenoylcarnitine from forming and thereby preventing it from being transported into the mitochondria.
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Creator: Jeanne Coleongco Created On: April 17, 2021 at 00:47 Last Updated: April 17, 2021 at 00:47 |
PW124774View Pathway |
Acylcarnitine 3-Hydroxy-2-methylbutanoylcarnitineHomo sapiens
3-Hydroxy-2-methylbutanoylcarnitine is an acylcarnitine. The general role of acylcarnitines is to transport acyl-groups, organic acids and fatty acids, from the cytoplasm into the mitochondria so that they can be broken down to produce energy. As part of this process, 3-hydroxy-2-methylbutanoic acid is first transported into the cell via the long-chain fatty acid transport protein 1 (FATP1). Once inside the cell it undergoes a reaction to form an acyl-CoA derivative called 3-hydroxy-2-methylbutanoyl-CoA. This reaction is facilitated by the long-chain fatty-acid CoA ligase 1 protein, which adds a CoA moiety to appropriate acyl groups. Many acyl-CoA groups will then further react with other zwitterionic compounds such as carnitine (to form acylcarnitines) and amino acids (to form acyl amides). The carnitine needed to form acylcarnitines inside the cell is transported into the cell by the organic cation/carnitine transporter 2. In forming an acylcarnitine derivative, 3-hydroxy-2-methylbutanoyl-CoA reacts with L-carnitine to form 3-hydroxy-2-methylbutanoylcarnitine. This reaction is catalyzed by carnitine O-palmitoyltransferase. This enzyme resides in the mitochondrial outer membrane. While this reaction takes place, the 3-hydroxy-2-methylbutanoylcarnitine is moved into the mitochondrial intermembrane space. Following the reaction, the newly synthesized acylcarnitine is transported into the mitochondrial matrix by a mitochondrial carnitine/acylcarnitine carrier protein found in the mitochondrial inner membrane. Once in the matrix, 3-hydroxy-2-methylbutanoylcarnitine can react with the carnitine O-palmitoyltransferase 2 enzyme found in the mitochondrial inner membrane to once again form 3-hydroxy-2-methylbutanoyl-CoA and L-carnitine. 3-Hydroxy-2-methylbutanoyl-CoA then enters into the mitochondrial beta-oxidation pathway to form aceytl-CoA. Acetyl-CoA can go on to enter the TCA cycle, or it can react with L-carnitine to form L-acetylcarnitine in a reaction catalyzed by Carnitine O-acetyltransferase. This reaction can occur in both directions, and L-acetylcarnitine and CoA can react to form acetyl-CoA and L-carnitine in certain circumstances. Finally, acetyl-CoA in the cytosol can be catalyzed by acetyl-CoA carboxylase 1 to form malonyl-CoA, which inhibits the action of carnitine O-palmitoyltransferase 1, thereby preventing 3-hydroxy-2-methylbutanoylcarnitine from forming and thereby preventing it from being transported into the mitochondria.
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Creator: Jeanne Coleongco Created On: April 16, 2021 at 16:11 Last Updated: April 16, 2021 at 16:11 |
PW125020View Pathway |
Acylcarnitine 3-hydroxy-2-propylpentanoylcarnitineHomo sapiens
3-hydroxy-2-propylpentanoylcarnitine is an acylcarnitine. The general role of acylcarnitines is to transport acyl-groups, organic acids and fatty acids, from the cytoplasm into the mitochondria so that they can be broken down to produce energy. As part of this process, 3-hydroxy-2-propylpentanoic acid is first transported into the cell via the long-chain fatty acid transport protein 1 (FATP1). Once inside the cell it undergoes a reaction to form an acyl-CoA derivative called 3-hydroxy-2-propylpentanoyl-CoA. This reaction is facilitated by the long-chain fatty-acid CoA ligase 1 protein, which adds a CoA moiety to appropriate acyl groups. Many acyl-CoA groups will then further react with other zwitterionic compounds such as carnitine (to form acylcarnitines) and amino acids (to form acyl amides). The carnitine needed to form acylcarnitines inside the cell is transported into the cell by the organic cation/carnitine transporter 2. In forming an acylcarnitine derivative, 3-hydroxy-2-propylpentanoyl-CoA reacts with L-carnitine to form 3-hydroxy-2-propylpentanoylcarnitine. This reaction is catalyzed by carnitine O-palmitoyltransferase. This enzyme resides in the mitochondrial outer membrane. While this reaction takes place, the 3-hydroxy-2-propylpentanoylcarnitine is moved into the mitochondrial intermembrane space. Following the reaction, the newly synthesized acylcarnitine is transported into the mitochondrial matrix by a mitochondrial carnitine/acylcarnitine carrier protein found in the mitochondrial inner membrane. Once in the matrix, 3-hydroxy-2-propylpentanoylcarnitine can react with the carnitine O-palmitoyltransferase 2 enzyme found in the mitochondrial inner membrane to once again form 3-hydroxy-2-propylpentanoyl-CoA and L-carnitine. 3-hydroxy-2-propylpentanoyl-CoA then enters into the mitochondrial beta-oxidation pathway to form aceytl-CoA. Acetyl-CoA can go on to enter the TCA cycle, or it can react with L-carnitine to form L-acetylcarnitine in a reaction catalyzed by Carnitine O-acetyltransferase. This reaction can occur in both directions, and L-acetylcarnitine and CoA can react to form acetyl-CoA and L-carnitine in certain circumstances. Finally, acetyl-CoA in the cytosol can be catalyzed by acetyl-CoA carboxylase 1 to form malonyl-CoA, which inhibits the action of carnitine O-palmitoyltransferase 1, thereby preventing 3-hydroxy-2-propylpentanoylcarnitine from forming and thereby preventing it from being transported into the mitochondria.
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Creator: Jeanne Coleongco Created On: April 16, 2021 at 18:33 Last Updated: April 16, 2021 at 18:33 |
PW124831View Pathway |
Acylcarnitine 3-Hydroxy-6-octenoylcarnitineHomo sapiens
3-Hydroxy-6-octenoylcarnitine is an acylcarnitine. The general role of acylcarnitines is to transport acyl-groups, organic acids and fatty acids, from the cytoplasm into the mitochondria so that they can be broken down to produce energy. As part of this process, 3-hydroxy-6-octenoic acid is first transported into the cell via the long-chain fatty acid transport protein 1 (FATP1). Once inside the cell it undergoes a reaction to form an acyl-CoA derivative called 3-hydroxy-6-octenoyl-CoA. This reaction is facilitated by the long-chain fatty-acid CoA ligase 1 protein, which adds a CoA moiety to appropriate acyl groups. Many acyl-CoA groups will then further react with other zwitterionic compounds such as carnitine (to form acylcarnitines) and amino acids (to form acyl amides). The carnitine needed to form acylcarnitines inside the cell is transported into the cell by the organic cation/carnitine transporter 2. In forming an acylcarnitine derivative, 3-hydroxy-6-octenoyl-CoA reacts with L-carnitine to form 3-hydroxy-6-octenoylcarnitine. This reaction is catalyzed by carnitine O-palmitoyltransferase. This enzyme resides in the mitochondrial outer membrane. While this reaction takes place, the 3-hydroxy-6-octenoylcarnitine is moved into the mitochondrial intermembrane space. Following the reaction, the newly synthesized acylcarnitine is transported into the mitochondrial matrix by a mitochondrial carnitine/acylcarnitine carrier protein found in the mitochondrial inner membrane. Once in the matrix, 3-hydroxy-6-octenoylcarnitine can react with the carnitine O-palmitoyltransferase 2 enzyme found in the mitochondrial inner membrane to once again form 3-hydroxy-6-octenoyl-CoA and L-carnitine. 3-Hydroxy-6-octenoyl-CoA then enters into the mitochondrial beta-oxidation pathway to form aceytl-CoA. Acetyl-CoA can go on to enter the TCA cycle, or it can react with L-carnitine to form L-acetylcarnitine in a reaction catalyzed by Carnitine O-acetyltransferase. This reaction can occur in both directions, and L-acetylcarnitine and CoA can react to form acetyl-CoA and L-carnitine in certain circumstances. Finally, acetyl-CoA in the cytosol can be catalyzed by acetyl-CoA carboxylase 1 to form malonyl-CoA, which inhibits the action of carnitine O-palmitoyltransferase 1, thereby preventing 3-hydroxy-6-octenoylcarnitine from forming and thereby preventing it from being transported into the mitochondria.
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Creator: Jeanne Coleongco Created On: April 16, 2021 at 16:38 Last Updated: April 16, 2021 at 16:38 |
PW125380View Pathway |
Acylcarnitine 3-HydroxydecanedioylcarnitineHomo sapiens
3-Hydroxydecanedioylcarnitine is an acylcarnitine. The general role of acylcarnitines is to transport acyl-groups, organic acids and fatty acids, from the cytoplasm into the mitochondria so that they can be broken down to produce energy. As part of this process, 3-hydroxydecanedioic acid is first transported into the cell via the long-chain fatty acid transport protein 1 (FATP1). Once inside the cell it undergoes a reaction to form an acyl-CoA derivative called 3-hydroxydecanedioyl-CoA. This reaction is facilitated by the long-chain fatty-acid CoA ligase 1 protein, which adds a CoA moiety to appropriate acyl groups. Many acyl-CoA groups will then further react with other zwitterionic compounds such as carnitine (to form acylcarnitines) and amino acids (to form acyl amides). The carnitine needed to form acylcarnitines inside the cell is transported into the cell by the organic cation/carnitine transporter 2. In forming an acylcarnitine derivative, 3-hydroxydecanedioyl-CoA reacts with L-carnitine to form 3-hydroxydecanedioylcarnitine. This reaction is catalyzed by carnitine O-palmitoyltransferase. This enzyme resides in the mitochondrial outer membrane. While this reaction takes place, the 3-hydroxydecanedioylcarnitine is moved into the mitochondrial intermembrane space. Following the reaction, the newly synthesized acylcarnitine is transported into the mitochondrial matrix by a mitochondrial carnitine/acylcarnitine carrier protein found in the mitochondrial inner membrane. Once in the matrix, 3-hydroxydecanedioylcarnitine can react with the carnitine O-palmitoyltransferase 2 enzyme found in the mitochondrial inner membrane to once again form 3-hydroxydecanedioyl-CoA and L-carnitine. 3-Hydroxydecanedioyl-CoA then enters into the mitochondrial beta-oxidation pathway to form aceytl-CoA. Acetyl-CoA can go on to enter the TCA cycle, or it can react with L-carnitine to form L-acetylcarnitine in a reaction catalyzed by Carnitine O-acetyltransferase. This reaction can occur in both directions, and L-acetylcarnitine and CoA can react to form acetyl-CoA and L-carnitine in certain circumstances. Finally, acetyl-CoA in the cytosol can be catalyzed by acetyl-CoA carboxylase 1 to form malonyl-CoA, which inhibits the action of carnitine O-palmitoyltransferase 1, thereby preventing 3-hydroxydecanedioylcarnitine from forming and thereby preventing it from being transported into the mitochondria.
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Creator: Jeanne Coleongco Created On: April 17, 2021 at 00:08 Last Updated: April 17, 2021 at 00:08 |