![Loader](/assets/loader_gears-10067f3a4c2984639d7edf1d9004a521da8e33a6d776660c0c1ba77f155d23c5.gif)
PathWhiz ID | Pathway | Meta Data |
---|---|---|
PW145513 |
drug action
Cholic Acid Drug Metabolism Action PathwayHomo sapiens
|
Creator: Ray Kruger Created On: October 07, 2023 at 15:58 Last Updated: October 07, 2023 at 15:58 |
PW012887 |
Choline Biosynthesis IArabidopsis thaliana
Choline is a nitrogen-containing, water-soluble nutrient that is incorporated into the headgroups of membrane phospholipids such as phosphatidylcholine. Two pathways exist for choline biosynthesis whereby serine becomes choline. Both of these pathways take place in the cytosol. This is the first pathway of choline biosynthesis. First, serine decarboxylase (SDC) uses a proton and a pyridoxal 5'-phosphate cofactor to catalyze the conversion of L-serine to ethanolamine, producing carbon dioxide as a byproduct. Second, ethanolamine kinase, localized to the cell membrane (coloured dark green in the image), uses ATP to catalyze the conversion of ethanolamine to O-phosphoethanolamine. Note that this is only the probable ethanolamine kinase in Arabidopsis thaliana and requires further research to confirm its function. Steps 3, 4, and 5 are catalyzed by phosphoethanolamine N-methyltransferase (PEAMT). These three sequential N-methylation steps convert phosphoethanolamine to phosphocholine and utilize S-adenosyl-L-methionine as a methyl donor. The intermediates are as follows: O-Phosphoethanolamine, N-methylethanolamine phosphate, and N-dimethylethanolamine phosphate. Sixth, phosphoethanolamine/phosphocholine phosphatase catalyzes the synthesis of choline from phosphocholine. It requires magnesium as a cofactor.
|
Creator: Carin Li Created On: February 21, 2017 at 17:55 Last Updated: February 21, 2017 at 17:55 |
PW012888 |
Choline Biosynthesis IIArabidopsis thaliana
Choline is a nitrogen-containing, water-soluble nutrient that is incorporated into the headgroups of membrane phospholipids such as phosphatidylcholine. Two pathways exist for choline biosynthesis whereby serine becomes choline. Both of these pathways take place in the cytosol. This is the second pathway of choline biosynthesis. First, serine decarboxylase (SDC) uses a proton and a pyridoxal 5'-phosphate cofactor to catalyze the conversion of L-serine to ethanolamine, producing carbon dioxide as a byproduct. Second, ethanolamine kinase, localized to the cell membrane (coloured dark green in the image), uses ATP to catalyze the conversion of ethanolamine to O-phosphoethanolamine. Note that this is only the probable ethanolamine kinase in Arabidopsis thaliana and requires further research to confirm its function. Steps 3, 4, and 5 are catalyzed by phosphoethanolamine N-methyltransferase (PEAMT). These three sequential N-methylation steps convert phosphoethanolamine to phosphocholine and utilize S-adenosyl-L-methionine as a methyl donor. The intermediates are as follows: O-Phosphoethanolamine, N-methylethanolamine phosphate, and N-dimethylethanolamine phosphate. Sixth, choline-phosphate cytidylyltransferase (CCT) uses CTP to convert phosphocholine to CDP-choline. Seventh, choline/ethanolaminephosphotransferase (AAPT) uses a 1,2-diacyl-sn-glycerol and either magnesium or manganese ions as cofactors to convert CDP-choline into a phosphatidyl choline, producing CMP and a proton as byproducts. Eighth, phospholipase D uses a calcium cofactor and water to convert a phosphatidylcholine to choline, producing a 1,2-diacyl-sn-glycerol 3-phosphate and a proton as byproducts.
|
Creator: Carin Li Created On: February 21, 2017 at 21:28 Last Updated: February 21, 2017 at 21:28 |
PW146066 |
drug action
Choline C 11 Drug Metabolism Action PathwayHomo sapiens
|
Creator: Ray Kruger Created On: October 07, 2023 at 17:19 Last Updated: October 07, 2023 at 17:19 |
PW132602 |
Choline C-11 Drug MetabolismHomo sapiens
Choline C-11 is a drug that is not metabolized by the human body as determined by current research and biotransformer analysis. Choline C-11 passes through the liver and is then excreted from the body mainly through the kidney.
|
Creator: Ray Kruger Created On: September 21, 2023 at 22:35 Last Updated: September 21, 2023 at 22:35 |
PW146199 |
drug action
Choline C-11 Drug Metabolism Action PathwayHomo sapiens
|
Creator: Ray Kruger Created On: October 07, 2023 at 17:39 Last Updated: October 07, 2023 at 17:39 |
PW144268 |
drug action
Choline Drug Metabolism Action PathwayHomo sapiens
|
Creator: Ray Kruger Created On: October 07, 2023 at 13:04 Last Updated: October 07, 2023 at 13:04 |
PW002494 |
Choline MetabolismSaccharomyces cerevisiae
The metabolism of choline containing lipids begins with glycerone phosphate either reacting with glycerol-3-phosphate dehydrogenase resulting in the release of glycerol-3-phosphate or it can react with glycerol-3-phosphate O-acyltransferase / dihydroxyacetone phosphate acyltransferase resulting in the release of a 1-acylglycerone 3-phosphate. Glycerol-3-phosphate reacts with glycerol-3-phosphate O-acyltransferase resulting in the release of an acyl glycerol phosphate. 1-acylglycerone 3-phosphate 1-acyl dihydroxyacetone phosphate reductase resulting in the release of a acyl glycerol phosphate. The latter compound then reacts with a oleoyl-CoA: lysophosphatidate acyltransferase resulting in the release of a phosphatidic acid. The latter compound reacts with Phosphatidic acid phosphohydrolase 1 resulting in the release of diacyl glycerol. This compound can be metabolized through a CTP-dependent diacylglycerol kinase 1 resulting in the release of a phosphatidic acid.
Phosphatidylcholine is degraded by a phospholipase resulting in the release of choline and phosphatidic acid.
Phosphatidylcholine can react with lysophospholipase resulting in the release of two fatty acids and a glycerophosphocholine. The latter compound reacts with a glycerophosphodiester phosphodiesterase resulting in the release of glycerol 3-phosphate and choline. Choline is phosphorylated through a choline kinase resulting in the release of phosphorycholine which can react with choline-phosphate cytidyltransferase resulting in the release of citicoline. The latter compound reacts with a diacylglycerol through a diacylglycerol cholinephosphotransferase resulting in the release of a phosphatidylcholine.
|
Creator: miguel ramirez Created On: March 03, 2016 at 11:10 Last Updated: March 03, 2016 at 11:10 |
PW132268 |
Choline salicylate Drug MetabolismHomo sapiens
Choline salicylate is a drug that is not metabolized by the human body as determined by current research and biotransformer analysis. Choline salicylate passes through the liver and is then excreted from the body mainly through the kidney.
|
Creator: Ray Kruger Created On: September 21, 2023 at 20:30 Last Updated: September 21, 2023 at 20:30 |
PW146735 |
drug action
Choline salicylate Drug Metabolism Action PathwayHomo sapiens
|
Creator: Ray Kruger Created On: October 07, 2023 at 18:55 Last Updated: October 07, 2023 at 18:55 |