PathWhiz ID | Pathway | Meta Data |
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PW000837View Pathway |
S-Adenosyl-L-Methionine BiosynthesisEscherichia coli
S-adenosyl-L-methionine biosynthesis(SAM) is synthesized in the cytosol of the cell from L-methionine and ATP. This reaction is catalyzed by methionine adenosyltransferase. L methione is taken up from the environment through a complex reaction coupled transport and then proceeds too synthesize the s adenosylmethionine through a adenosylmethionine synthase. S-adenosylmethionine then interacts with a hydrogen ion through an adenosylmethionine decarboxylase resulting in a carbon dioxide and a S-adenosyl 3-methioninamine. This compound interacts with a putrescine through a spermidine synthase resulting in a spermidine, a hydrogen ion and a S-methyl-5'-thioadenosine. The latter compound is degraded by interacting with a water molecule through a 5' methylthioadenosine nucleosidase resulting in an adenine and a S-methylthioribose which is then release into the environment
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Creator: miguel ramirez Created On: April 05, 2015 at 17:23 Last Updated: April 05, 2015 at 17:23 |
PW002080View Pathway |
S-Adenosyl-L-Methionine CycleEscherichia coli
The S-adenosyl-L-methionine cycle starts with S-adenosyl-L-methionine reacting with (a demethylated methyl donor ) dimethylglycine resulting in the release of a hydrogen ion, a betain (a methylated methyl donor) and a S-adenosyl-L-homocysteine. The s-adenosyl-L-homocysteine reacts with a water molecule through a S-adenosylhomocysteine nucleosidase resulting in the release of a adenine and a ribosyl-L-homocysteine. This compound in turn reacts with a s-ribosylhomocysteine lyase resulting in the release of a l-homocysteine and a autoinducer 2. The L-homocysteine reacts with a N5-methyl-tetrahydropteroyl tri-L-glutamate through a methionine synthase resulting in the release of a tetrahydropteroyl tri-L-glutamate and a methione. The methionine in turn reacts with a water molecule and ATP molecule through a methionine adenosyltransferase resulting in the release of a diphosphate, a phosphate and a s-adenosyl-L-methionine.
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Creator: miguel ramirez Created On: October 13, 2015 at 12:59 Last Updated: October 13, 2015 at 12:59 |
PW122008View Pathway |
disease
S-Adenosylhomocysteine (SAH) Hydrolase DeficiencyRattus norvegicus
S-Adenosylhomocysteine hydrolase deficiency, also known as AdoHcy hydrolase deficiency or adenosylhomocysteinase (AHCY) deficiency, is an autosomal recessive disorder characterized by a defective AHCY gene. AHCY codes for the enzyme S-adenosylhomocysteine hydrolase (AdoHcyase) which efficiently eliminates S-adenosylhomocysteine (SAH) by catalyzing its hydrolysis into adenosine and homocysteine. SAH is both a byproduct of S-adenosylmethionine-dependent methyltransferases and a powerful methyltransferase inhibitor. For these reasons, AdoHcyase is thought to play an essential role in regulating methylations. AdoHcyase deficiency causes a buildup of homocysteine which may be then converted into methionine or cysteine. The accumulation of methionine as a result of AHCY deficiency may lead to signs and symptoms associated with hypermethioninemia, including mental and motor retardation, dysmorphism (unusual facial features), and abnormalities in liver function.
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Creator: Ana Marcu Created On: September 10, 2018 at 15:51 Last Updated: September 10, 2018 at 15:51 |
PW121783View Pathway |
disease
S-Adenosylhomocysteine (SAH) Hydrolase DeficiencyMus musculus
S-Adenosylhomocysteine hydrolase deficiency, also known as AdoHcy hydrolase deficiency or adenosylhomocysteinase (AHCY) deficiency, is an autosomal recessive disorder characterized by a defective AHCY gene. AHCY codes for the enzyme S-adenosylhomocysteine hydrolase (AdoHcyase) which efficiently eliminates S-adenosylhomocysteine (SAH) by catalyzing its hydrolysis into adenosine and homocysteine. SAH is both a byproduct of S-adenosylmethionine-dependent methyltransferases and a powerful methyltransferase inhibitor. For these reasons, AdoHcyase is thought to play an essential role in regulating methylations. AdoHcyase deficiency causes a buildup of homocysteine which may be then converted into methionine or cysteine. The accumulation of methionine as a result of AHCY deficiency may lead to signs and symptoms associated with hypermethioninemia, including mental and motor retardation, dysmorphism (unusual facial features), and abnormalities in liver function.
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Creator: Ana Marcu Created On: September 10, 2018 at 15:49 Last Updated: September 10, 2018 at 15:49 |
PW000102View Pathway |
disease
S-Adenosylhomocysteine (SAH) Hydrolase DeficiencyHomo sapiens
S-Adenosylhomocysteine hydrolase deficiency, also known as AdoHcy hydrolase deficiency or adenosylhomocysteinase (AHCY) deficiency, is an autosomal recessive disorder characterized by a defective AHCY gene. AHCY codes for the enzyme S-adenosylhomocysteine hydrolase (AdoHcyase) which efficiently eliminates S-adenosylhomocysteine (SAH) by catalyzing its hydrolysis into adenosine and homocysteine. SAH is both a byproduct of S-adenosylmethionine-dependent methyltransferases and a powerful methyltransferase inhibitor. For these reasons, AdoHcyase is thought to play an essential role in regulating methylations. AdoHcyase deficiency causes a buildup of homocysteine which may be then converted into methionine or cysteine. The accumulation of methionine as a result of AHCY deficiency may lead to signs and symptoms associated with hypermethioninemia, including mental and motor retardation, dysmorphism (unusual facial features), and abnormalities in liver function.
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Creator: WishartLab Created On: August 01, 2013 at 15:52 Last Updated: August 01, 2013 at 15:52 |
PW127245View Pathway |
disease
S-Adenosylhomocysteine (SAH) Hydrolase DeficiencyHomo sapiens
S-Adenosylhomocysteine hydrolase deficiency, also known as AdoHcy hydrolase deficiency or adenosylhomocysteinase (AHCY) deficiency, is an autosomal recessive disorder characterized by a defective AHCY gene. AHCY codes for the enzyme S-adenosylhomocysteine hydrolase (AdoHcyase) which efficiently eliminates S-adenosylhomocysteine (SAH) by catalyzing its hydrolysis into adenosine and homocysteine. SAH is both a byproduct of S-adenosylmethionine-dependent methyltransferases and a powerful methyltransferase inhibitor. For these reasons, AdoHcyase is thought to play an essential role in regulating methylations. AdoHcyase deficiency causes a buildup of homocysteine which may be then converted into methionine or cysteine. The accumulation of methionine as a result of AHCY deficiency may lead to signs and symptoms associated with hypermethioninemia, including mental and motor retardation, dysmorphism (unusual facial features), and abnormalities in liver function.
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Creator: Ray Kruger Created On: November 21, 2022 at 17:03 Last Updated: November 21, 2022 at 17:03 |
PW122237View Pathway |
signaling
SA-dependent resistanceArabidopsis thaliana
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Creator: Guest: Anonymous Created On: September 21, 2018 at 05:34 Last Updated: September 21, 2018 at 05:34 |
PW146311View Pathway |
drug action
Saccharide isomerate Drug Metabolism Action PathwayHomo sapiens
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Creator: Ray Kruger Created On: October 07, 2023 at 17:55 Last Updated: October 07, 2023 at 17:55 |
PW000112View Pathway |
disease
Saccharopinuria/Hyperlysinemia IIHomo sapiens
Saccharopinuria (also known as: saccharopinemia, saccharopine dehydrogenase deficiency, and alpha-aminoadipic semialdehyde synthase deficiency) is caused by a partial deficiency of aminoadipic semialdehyde synthase (AASS) enzyme and causes an increase in saccharopine in the urine. Saccharopinuria is another form of hyperlysinemia. AASS has lysine ketoglutarate reductase (LKR) and saccharopine dehydrogenase (SDH) activity. AASS acts in the first 2 steps in lysine degradation. A defect in this enzyme results in accumulation of citrulline, lysine and saccharopin in the plasma; lysine in the spinal fluid; and citrulline, lysine and saccharopine in the urine. Symptoms include growth and mental retardation.
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Creator: WishartLab Created On: August 01, 2013 at 15:52 Last Updated: August 01, 2013 at 15:52 |
PW127265View Pathway |
disease
Saccharopinuria/Hyperlysinemia IIHomo sapiens
Saccharopinuria (also known as: saccharopinemia, saccharopine dehydrogenase deficiency, and alpha-aminoadipic semialdehyde synthase deficiency) is caused by a partial deficiency of aminoadipic semialdehyde synthase (AASS) enzyme and causes an increase in saccharopine in the urine. Saccharopinuria is another form of hyperlysinemia. AASS has lysine ketoglutarate reductase (LKR) and saccharopine dehydrogenase (SDH) activity. AASS acts in the first 2 steps in lysine degradation. A defect in this enzyme results in accumulation of citrulline, lysine and saccharopin in the plasma; lysine in the spinal fluid; and citrulline, lysine and saccharopine in the urine. Symptoms include growth and mental retardation.
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Creator: Ray Kruger Created On: November 24, 2022 at 17:32 Last Updated: November 24, 2022 at 17:32 |