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PathWhiz ID Pathway Meta Data

PW125020

Pw125020 View Pathway
metabolic

Acylcarnitine 3-hydroxy-2-propylpentanoylcarnitine

Homo 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.

PW124774

Pw124774 View Pathway
metabolic

Acylcarnitine 3-Hydroxy-2-methylbutanoylcarnitine

Homo 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.

PW125464

Pw125464 View Pathway
metabolic

Acylcarnitine 3-Dodecenoylcarnitine

Homo 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.

PW125316

Pw125316 View Pathway
metabolic

Acylcarnitine 3-Decenoylcarnitine

Homo 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.

PW124777

Pw124777 View Pathway
metabolic

Acylcarnitine 3-Butenylcarnitine

Homo 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.

PW124990

Pw124990 View Pathway
metabolic

Acylcarnitine 3-[(2R)-2-hydroxy-3-methyl-3-[(phosphonooxy)methyl]butanamido]propanoylcarnitine

Homo 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.

PW125913

Pw125913 View Pathway
metabolic

Acylcarnitine 3-[(2-oxoacetyl)oxy]-4-(trimethylazaniumyl)butanoate

Homo sapiens

PW124937

Pw124937 View Pathway
metabolic

Acylcarnitine 3-[(1S,2R,5S)-5-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-3-oxocyclopentyl]propanoylcarnitine

Homo 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.

PW124938

Pw124938 View Pathway
metabolic

Acylcarnitine 3-[(1S,2R,3R)-3-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-5-oxocyclopentyl]propanoylcarnitine

Homo sapiens
3-[(1S,2R,3R)-3-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-5-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,3R)-3-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-5-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,3R)-3-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-5-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,3R)-3-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-5-oxocyclopentyl]propanoyl-CoA reacts with L-carnitine to form 3-[(1S,2R,3R)-3-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-5-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,3R)-3-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-5-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,3R)-3-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-5-oxocyclopentyl]propanoylcarnitine can react with the carnitine O-palmitoyltransferase 2 enzyme found in the mitochondrial inner membrane to once again form 3-[(1S,2R,3R)-3-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-5-oxocyclopentyl]propanoyl-CoA and L-carnitine. 3-[(1S,2R,3R)-3-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-5-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,3R)-3-hydroxy-2-[(1E,3S,5Z,8Z,11Z)-3-hydroxytetradeca-1,5,8,11-tetraen-1-yl]-5-oxocyclopentyl]propanoylcarnitine from forming and thereby preventing it from being transported into the mitochondria.

PW124936

Pw124936 View Pathway
metabolic

Acylcarnitine 3-[(1R,4S,5S,6R)-6-[(1E,3S,5Z,8Z,11Z)-3-hydroperoxytetradeca-1,5,8,11-tetraen-1-yl]-2,3-dioxabicyclo[2.2.1]heptan-5-yl]propanoylcarnitine

Homo sapiens
3-[(1R,4S,5S,6R)-6-[(1E,3S,5Z,8Z,11Z)-3-hydroperoxytetradeca-1,5,8,11-tetraen-1-yl]-2,3-dioxabicyclo[2.2.1]heptan-5-yl]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-[(1R,4S,5S,6R)-6-[(1E,3S,5Z,8Z,11Z)-3-hydroperoxytetradeca-1,5,8,11-tetraen-1-yl]-2,3-dioxabicyclo[2.2.1]heptan-5-yl]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-[(1R,4S,5S,6R)-6-[(1E,3S,5Z,8Z,11Z)-3-hydroperoxytetradeca-1,5,8,11-tetraen-1-yl]-2,3-dioxabicyclo[2.2.1]heptan-5-yl]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-[(1R,4S,5S,6R)-6-[(1E,3S,5Z,8Z,11Z)-3-hydroperoxytetradeca-1,5,8,11-tetraen-1-yl]-2,3-dioxabicyclo[2.2.1]heptan-5-yl]propanoyl-CoA reacts with L-carnitine to form 3-[(1R,4S,5S,6R)-6-[(1E,3S,5Z,8Z,11Z)-3-hydroperoxytetradeca-1,5,8,11-tetraen-1-yl]-2,3-dioxabicyclo[2.2.1]heptan-5-yl]propanoylcarnitine. This reaction is catalyzed by carnitine O-palmitoyltransferase. This enzyme resides in the mitochondrial outer membrane. While this reaction takes place, the 3-[(1R,4S,5S,6R)-6-[(1E,3S,5Z,8Z,11Z)-3-hydroperoxytetradeca-1,5,8,11-tetraen-1-yl]-2,3-dioxabicyclo[2.2.1]heptan-5-yl]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-[(1R,4S,5S,6R)-6-[(1E,3S,5Z,8Z,11Z)-3-hydroperoxytetradeca-1,5,8,11-tetraen-1-yl]-2,3-dioxabicyclo[2.2.1]heptan-5-yl]propanoylcarnitine can react with the carnitine O-palmitoyltransferase 2 enzyme found in the mitochondrial inner membrane to once again form 3-[(1R,4S,5S,6R)-6-[(1E,3S,5Z,8Z,11Z)-3-hydroperoxytetradeca-1,5,8,11-tetraen-1-yl]-2,3-dioxabicyclo[2.2.1]heptan-5-yl]propanoyl-CoA and L-carnitine. 3-[(1R,4S,5S,6R)-6-[(1E,3S,5Z,8Z,11Z)-3-hydroperoxytetradeca-1,5,8,11-tetraen-1-yl]-2,3-dioxabicyclo[2.2.1]heptan-5-yl]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-[(1R,4S,5S,6R)-6-[(1E,3S,5Z,8Z,11Z)-3-hydroperoxytetradeca-1,5,8,11-tetraen-1-yl]-2,3-dioxabicyclo[2.2.1]heptan-5-yl]propanoylcarnitine from forming and thereby preventing it from being transported into the mitochondria.