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Pathways

PathWhiz ID Pathway Meta Data

PW145020

Pw145020 View Pathway
drug action

Spectinomycin Drug Metabolism Action Pathway

Homo sapiens

PW088232

Pw088232 View Pathway
metabolic

Spermidine and Spermine Biosynthesis

Bos taurus
The Spermidine and Spermine Biosynthesis pathway highlights the creation of these cruicial polyamines. Spermidine and spermine are produced in many tissues, as they are involved in the regulation of genetic processes from DNA synthesis to cell migration, proliferation, differentiation and apoptosis. These positiviely charged amines interact with negatively charged phosphates in nucleic acids to exert their regulatory effects on cellular processes. Spermidine originates from the action of spermidine synthase, which converts the methionine derivative S-adenosylmethionine and the ornithine derivative putrescine into spermidine 5'-methylthioadenosine. Spermidine is subsequently processed into spermine by spermine synthase in the presence of the aminopropyl donor, S-adenosylmethioninamine.

PW088461

Pw088461 View Pathway
metabolic

Spermidine and Spermine Biosynthesis

Caenorhabditis elegans
The Spermidine and Spermine Biosynthesis pathway highlights the creation of these cruicial polyamines. Spermidine and spermine are produced in many tissues, as they are involved in the regulation of genetic processes from DNA synthesis to cell migration, proliferation, differentiation and apoptosis. These positiviely charged amines interact with negatively charged phosphates in nucleic acids to exert their regulatory effects on cellular processes. Spermidine originates from the action of spermidine synthase, which converts the methionine derivative S-adenosylmethionine and the ornithine derivative putrescine into spermidine 5'-methylthioadenosine. Spermidine is subsequently processed into spermine by spermine synthase in the presence of the aminopropyl donor, S-adenosylmethioninamine.

PW088327

Pw088327 View Pathway
metabolic

Spermidine and Spermine Biosynthesis

Rattus norvegicus
The Spermidine and Spermine Biosynthesis pathway highlights the creation of these cruicial polyamines. Spermidine and spermine are produced in many tissues, as they are involved in the regulation of genetic processes from DNA synthesis to cell migration, proliferation, differentiation and apoptosis. These positiviely charged amines interact with negatively charged phosphates in nucleic acids to exert their regulatory effects on cellular processes. Spermidine originates from the action of spermidine synthase, which converts the methionine derivative S-adenosylmethionine and the ornithine derivative putrescine into spermidine 5'-methylthioadenosine. Spermidine is subsequently processed into spermine by spermine synthase in the presence of the aminopropyl donor, S-adenosylmethioninamine.

PW064652

Pw064652 View Pathway
metabolic

Spermidine and Spermine Biosynthesis

Mus musculus
The Spermidine and Spermine Biosynthesis pathway highlights the creation of these cruicial polyamines. Spermidine and spermine are produced in many tissues, as they are involved in the regulation of genetic processes from DNA synthesis to cell migration, proliferation, differentiation and apoptosis. These positiviely charged amines interact with negatively charged phosphates in nucleic acids to exert their regulatory effects on cellular processes. Spermidine originates from the action of spermidine synthase, which converts the methionine derivative S-adenosylmethionine and the ornithine derivative putrescine into spermidine 5'-methylthioadenosine. Spermidine is subsequently processed into spermine by spermine synthase in the presence of the aminopropyl donor, S-adenosylmethioninamine.

PW000037

Pw000037 View Pathway
metabolic

Spermidine and Spermine Biosynthesis

Homo sapiens
The Spermidine and Spermine Biosynthesis pathway highlights the creation of these cruicial polyamines. Spermidine and spermine are produced in many tissues, as they are involved in the regulation of genetic processes from DNA synthesis to cell migration, proliferation, differentiation and apoptosis. These positiviely charged amines interact with negatively charged phosphates in nucleic acids to exert their regulatory effects on cellular processes. Spermidine originates from the action of spermidine synthase, which converts the methionine derivative S-adenosylmethionine and the ornithine derivative putrescine into spermidine 5'-methylthioadenosine. Spermidine is subsequently processed into spermine by spermine synthase in the presence of the aminopropyl donor, S-adenosylmethioninamine.

PW088406

Pw088406 View Pathway
metabolic

Spermidine and Spermine Biosynthesis

Drosophila melanogaster
The Spermidine and Spermine Biosynthesis pathway highlights the creation of these cruicial polyamines. Spermidine and spermine are produced in many tissues, as they are involved in the regulation of genetic processes from DNA synthesis to cell migration, proliferation, differentiation and apoptosis. These positiviely charged amines interact with negatively charged phosphates in nucleic acids to exert their regulatory effects on cellular processes. Spermidine originates from the action of spermidine synthase, which converts the methionine derivative S-adenosylmethionine and the ornithine derivative putrescine into spermidine 5'-methylthioadenosine. Spermidine is subsequently processed into spermine by spermine synthase in the presence of the aminopropyl donor, S-adenosylmethioninamine.

PW002085

Pw002085 View Pathway
metabolic

Spermidine Biosynthesis and Metabolism

Escherichia coli
Spermidine metabolism starts with S-adenosyl-L-methionine reacting with a hydrogen ion through a adenosylmethionine decarboxylase resulting in the release of a carbon dioxide and a S-adenosyl 3-(methylthio)propylamine. The later compound in turn reacts with putrescine resulting in the release of a hydrogen ion, a spermidine and a S-methyl-5'-thioadenosine. S-methyl-5'-thioadenosine in turn reacts with a water molecule through a 5-methylthioadenosine nucleosidase resulting in the release of a adenine and a S-methyl-5-thio-D-ribose which in in turn is released into the environment.

PW123537

Pw123537 View Pathway
metabolic

Spermidine Biosynthesis I

Pseudomonas aeruginosa
Spermidine is formed from decarboxy-SAM and putrescine by catalyzing spermidine synthase (also knowns as polyamine aminopropyltransferase). The source of putrescine is transported from outside of cell by putrescine/spermidine ABC transporter. Decarboxy-SAM comes from S-Adenosylmethionine with catalyzation of adenosylmethionine decarboxylase and cofactors: pyruvic acid and magnesium. The other product of the aminopropyltransferase reaction is S-methyl-5'-thioadenosine (MTA), which can be recycled back to L-methionine in many organisms, but not in E. coli. Inhibition of E. coli adenosylmethionine decarboxylase by spermidine appears to be the most significant regulator of polyamine biosynthesis, probably limiting it when the intracellular spermidine concentration becomes excessive. In E. coli most intracellular spermidine is bound to nucleic acids and phospholipids. (EcoCyc)

PW002040

Pw002040 View Pathway
metabolic

Spermidine Biosynthesis I

Escherichia coli
Spermidine is formed from decarboxy-SAM and putrescine by catalyzing spermidine synthase (also knowns as polyamine aminopropyltransferase). The source of putrescine is transported from outside of cell by putrescine/spermidine ABC transporter. Decarboxy-SAM comes from S-Adenosylmethionine with catalyzation of adenosylmethionine decarboxylase and cofactors: pyruvic acid and magnesium. The other product of the aminopropyltransferase reaction is S-methyl-5'-thioadenosine (MTA), which can be recycled back to L-methionine in many organisms, but not in E. coli. Inhibition of E. coli adenosylmethionine decarboxylase by spermidine appears to be the most significant regulator of polyamine biosynthesis, probably limiting it when the intracellular spermidine concentration becomes excessive. In E. coli most intracellular spermidine is bound to nucleic acids and phospholipids. (EcoCyc)