(11 nodes) Biosynthesis and regeneration of tetrahydrobiopterin and catabolism of phenylalanine network (Homo sapiens)

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	DBH	Soluble dopamine beta-hydroxylase; Conversion of dopamine to noradrenaline. (617 aa)
	MAOA	Amine oxidase [flavin-containing] A; Catalyzes the oxidative deamination of biogenic and xenobiotic amines and has important functions in the metabolism of neuroactive and vasoactive amines in the central nervous system and peripheral tissues. MAOA preferentially oxidizes biogenic amines such as 5-hydroxytryptamine (5-HT), norepinephrine and epinephrine. (527 aa)
	GCH1	GTP cyclohydrolase 1; Positively regulates nitric oxide synthesis in umbilical vein endothelial cells (HUVECs). May be involved in dopamine synthesis. May modify pain sensitivity and persistence. Isoform GCH-1 is the functional enzyme, the potential function of the enzymatically inactive isoforms remains unknown. Belongs to the GTP cyclohydrolase I family. (250 aa)
	COMT	Catechol O-methyltransferase; Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol; Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-dependent O-methyltransferase family. (271 aa)
	PAH	Phenylalanine-4-hydroxylase; Catalyzes the hydroxylation of L-phenylalanine to L-tyrosine. Belongs to the biopterin-dependent aromatic amino acid hydroxylase family. (452 aa)
	MAOB	Amine oxidase [flavin-containing] B; Catalyzes the oxidative deamination of biogenic and xenobiotic amines and has important functions in the metabolism of neuroactive and vasoactive amines in the central nervous system and peripheral tissues. MAOB preferentially degrades benzylamine and phenylethylamine; Belongs to the flavin monoamine oxidase family. (520 aa)
	ASMT	Acetylserotonin O-methyltransferase; Isoform 1 catalyzes the transfer of a methyl group onto N- acetylserotonin, producing melatonin (N-acetyl-5-methoxytryptamine). Isoform 2 and isoform 3 lack enzyme activity. Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-independent O-methyltransferase family. (373 aa)
	DNAJC12	DnaJ heat shock protein family member C12. (198 aa)
	AANAT	Serotonin N-acetyltransferase; Controls the night/day rhythm of melatonin production in the pineal gland. Catalyzes the N-acetylation of serotonin into N- acetylserotonin, the penultimate step in the synthesis of melatonin. Belongs to the acetyltransferase family. AANAT subfamily. (252 aa)
	PNMT	Phenylethanolamine N-methyltransferase; Converts noradrenaline to adrenaline; Belongs to the class I-like SAM-binding methyltransferase superfamily. NNMT/PNMT/TEMT family. (282 aa)
	PTS	6-pyruvoyl tetrahydrobiopterin synthase; Involved in the biosynthesis of tetrahydrobiopterin, an essential cofactor of aromatic amino acid hydroxylases. Catalyzes the transformation of 7,8-dihydroneopterin triphosphate into 6-pyruvoyl tetrahydropterin; Belongs to the PTPS family. (145 aa)

Your Current Organism:

Homo sapiens

NCBI taxonomy Id: 9606
Other names: H. sapiens, human, man

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Browse interactions in tabular form:

node1	node2	node1 accession	node2 accession	node1 annotation	node2 annotation	score
AANAT	ASMT	ENSP00000250615	ENSP00000370639	Serotonin N-acetyltransferase; Controls the night/day rhythm of melatonin production in the pineal gland. Catalyzes the N-acetylation of serotonin into N- acetylserotonin, the penultimate step in the synthesis of melatonin. Belongs to the acetyltransferase family. AANAT subfamily.	Acetylserotonin O-methyltransferase; Isoform 1 catalyzes the transfer of a methyl group onto N- acetylserotonin, producing melatonin (N-acetyl-5-methoxytryptamine). Isoform 2 and isoform 3 lack enzyme activity. Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-independent O-methyltransferase family.	0.994
AANAT	COMT	ENSP00000250615	ENSP00000354511	Serotonin N-acetyltransferase; Controls the night/day rhythm of melatonin production in the pineal gland. Catalyzes the N-acetylation of serotonin into N- acetylserotonin, the penultimate step in the synthesis of melatonin. Belongs to the acetyltransferase family. AANAT subfamily.	Catechol O-methyltransferase; Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol; Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-dependent O-methyltransferase family.	0.455
AANAT	MAOA	ENSP00000250615	ENSP00000340684	Serotonin N-acetyltransferase; Controls the night/day rhythm of melatonin production in the pineal gland. Catalyzes the N-acetylation of serotonin into N- acetylserotonin, the penultimate step in the synthesis of melatonin. Belongs to the acetyltransferase family. AANAT subfamily.	Amine oxidase [flavin-containing] A; Catalyzes the oxidative deamination of biogenic and xenobiotic amines and has important functions in the metabolism of neuroactive and vasoactive amines in the central nervous system and peripheral tissues. MAOA preferentially oxidizes biogenic amines such as 5-hydroxytryptamine (5-HT), norepinephrine and epinephrine.	0.943
AANAT	MAOB	ENSP00000250615	ENSP00000367309	Serotonin N-acetyltransferase; Controls the night/day rhythm of melatonin production in the pineal gland. Catalyzes the N-acetylation of serotonin into N- acetylserotonin, the penultimate step in the synthesis of melatonin. Belongs to the acetyltransferase family. AANAT subfamily.	Amine oxidase [flavin-containing] B; Catalyzes the oxidative deamination of biogenic and xenobiotic amines and has important functions in the metabolism of neuroactive and vasoactive amines in the central nervous system and peripheral tissues. MAOB preferentially degrades benzylamine and phenylethylamine; Belongs to the flavin monoamine oxidase family.	0.937
ASMT	AANAT	ENSP00000370639	ENSP00000250615	Acetylserotonin O-methyltransferase; Isoform 1 catalyzes the transfer of a methyl group onto N- acetylserotonin, producing melatonin (N-acetyl-5-methoxytryptamine). Isoform 2 and isoform 3 lack enzyme activity. Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-independent O-methyltransferase family.	Serotonin N-acetyltransferase; Controls the night/day rhythm of melatonin production in the pineal gland. Catalyzes the N-acetylation of serotonin into N- acetylserotonin, the penultimate step in the synthesis of melatonin. Belongs to the acetyltransferase family. AANAT subfamily.	0.994
ASMT	COMT	ENSP00000370639	ENSP00000354511	Acetylserotonin O-methyltransferase; Isoform 1 catalyzes the transfer of a methyl group onto N- acetylserotonin, producing melatonin (N-acetyl-5-methoxytryptamine). Isoform 2 and isoform 3 lack enzyme activity. Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-independent O-methyltransferase family.	Catechol O-methyltransferase; Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol; Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-dependent O-methyltransferase family.	0.505
ASMT	MAOA	ENSP00000370639	ENSP00000340684	Acetylserotonin O-methyltransferase; Isoform 1 catalyzes the transfer of a methyl group onto N- acetylserotonin, producing melatonin (N-acetyl-5-methoxytryptamine). Isoform 2 and isoform 3 lack enzyme activity. Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-independent O-methyltransferase family.	Amine oxidase [flavin-containing] A; Catalyzes the oxidative deamination of biogenic and xenobiotic amines and has important functions in the metabolism of neuroactive and vasoactive amines in the central nervous system and peripheral tissues. MAOA preferentially oxidizes biogenic amines such as 5-hydroxytryptamine (5-HT), norepinephrine and epinephrine.	0.492
ASMT	MAOB	ENSP00000370639	ENSP00000367309	Acetylserotonin O-methyltransferase; Isoform 1 catalyzes the transfer of a methyl group onto N- acetylserotonin, producing melatonin (N-acetyl-5-methoxytryptamine). Isoform 2 and isoform 3 lack enzyme activity. Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-independent O-methyltransferase family.	Amine oxidase [flavin-containing] B; Catalyzes the oxidative deamination of biogenic and xenobiotic amines and has important functions in the metabolism of neuroactive and vasoactive amines in the central nervous system and peripheral tissues. MAOB preferentially degrades benzylamine and phenylethylamine; Belongs to the flavin monoamine oxidase family.	0.416
ASMT	PAH	ENSP00000370639	ENSP00000448059	Acetylserotonin O-methyltransferase; Isoform 1 catalyzes the transfer of a methyl group onto N- acetylserotonin, producing melatonin (N-acetyl-5-methoxytryptamine). Isoform 2 and isoform 3 lack enzyme activity. Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-independent O-methyltransferase family.	Phenylalanine-4-hydroxylase; Catalyzes the hydroxylation of L-phenylalanine to L-tyrosine. Belongs to the biopterin-dependent aromatic amino acid hydroxylase family.	0.405
COMT	AANAT	ENSP00000354511	ENSP00000250615	Catechol O-methyltransferase; Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol; Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-dependent O-methyltransferase family.	Serotonin N-acetyltransferase; Controls the night/day rhythm of melatonin production in the pineal gland. Catalyzes the N-acetylation of serotonin into N- acetylserotonin, the penultimate step in the synthesis of melatonin. Belongs to the acetyltransferase family. AANAT subfamily.	0.455
COMT	ASMT	ENSP00000354511	ENSP00000370639	Catechol O-methyltransferase; Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol; Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-dependent O-methyltransferase family.	Acetylserotonin O-methyltransferase; Isoform 1 catalyzes the transfer of a methyl group onto N- acetylserotonin, producing melatonin (N-acetyl-5-methoxytryptamine). Isoform 2 and isoform 3 lack enzyme activity. Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-independent O-methyltransferase family.	0.505
COMT	DBH	ENSP00000354511	ENSP00000376776	Catechol O-methyltransferase; Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol; Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-dependent O-methyltransferase family.	Soluble dopamine beta-hydroxylase; Conversion of dopamine to noradrenaline.	0.979
COMT	GCH1	ENSP00000354511	ENSP00000477796	Catechol O-methyltransferase; Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol; Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-dependent O-methyltransferase family.	GTP cyclohydrolase 1; Positively regulates nitric oxide synthesis in umbilical vein endothelial cells (HUVECs). May be involved in dopamine synthesis. May modify pain sensitivity and persistence. Isoform GCH-1 is the functional enzyme, the potential function of the enzymatically inactive isoforms remains unknown. Belongs to the GTP cyclohydrolase I family.	0.447
COMT	MAOA	ENSP00000354511	ENSP00000340684	Catechol O-methyltransferase; Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol; Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-dependent O-methyltransferase family.	Amine oxidase [flavin-containing] A; Catalyzes the oxidative deamination of biogenic and xenobiotic amines and has important functions in the metabolism of neuroactive and vasoactive amines in the central nervous system and peripheral tissues. MAOA preferentially oxidizes biogenic amines such as 5-hydroxytryptamine (5-HT), norepinephrine and epinephrine.	0.996
COMT	MAOB	ENSP00000354511	ENSP00000367309	Catechol O-methyltransferase; Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol; Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-dependent O-methyltransferase family.	Amine oxidase [flavin-containing] B; Catalyzes the oxidative deamination of biogenic and xenobiotic amines and has important functions in the metabolism of neuroactive and vasoactive amines in the central nervous system and peripheral tissues. MAOB preferentially degrades benzylamine and phenylethylamine; Belongs to the flavin monoamine oxidase family.	0.996
COMT	PAH	ENSP00000354511	ENSP00000448059	Catechol O-methyltransferase; Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol; Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-dependent O-methyltransferase family.	Phenylalanine-4-hydroxylase; Catalyzes the hydroxylation of L-phenylalanine to L-tyrosine. Belongs to the biopterin-dependent aromatic amino acid hydroxylase family.	0.401
COMT	PNMT	ENSP00000354511	ENSP00000269582	Catechol O-methyltransferase; Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol; Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-dependent O-methyltransferase family.	Phenylethanolamine N-methyltransferase; Converts noradrenaline to adrenaline; Belongs to the class I-like SAM-binding methyltransferase superfamily. NNMT/PNMT/TEMT family.	0.965
DBH	COMT	ENSP00000376776	ENSP00000354511	Soluble dopamine beta-hydroxylase; Conversion of dopamine to noradrenaline.	Catechol O-methyltransferase; Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol; Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-dependent O-methyltransferase family.	0.979
DBH	MAOA	ENSP00000376776	ENSP00000340684	Soluble dopamine beta-hydroxylase; Conversion of dopamine to noradrenaline.	Amine oxidase [flavin-containing] A; Catalyzes the oxidative deamination of biogenic and xenobiotic amines and has important functions in the metabolism of neuroactive and vasoactive amines in the central nervous system and peripheral tissues. MAOA preferentially oxidizes biogenic amines such as 5-hydroxytryptamine (5-HT), norepinephrine and epinephrine.	0.987
DBH	MAOB	ENSP00000376776	ENSP00000367309	Soluble dopamine beta-hydroxylase; Conversion of dopamine to noradrenaline.	Amine oxidase [flavin-containing] B; Catalyzes the oxidative deamination of biogenic and xenobiotic amines and has important functions in the metabolism of neuroactive and vasoactive amines in the central nervous system and peripheral tissues. MAOB preferentially degrades benzylamine and phenylethylamine; Belongs to the flavin monoamine oxidase family.	0.984