NCBI Taxonomy: 209983
Pyrrhocoroidea (ncbi_taxid: 209983)
found 14 associated metabolites at superfamily taxonomy rank level.
Ancestor: Pentatomomorpha
Child Taxonomies: Largidae, Pyrrhocoridae
Dihydrobiopterin
Dihydrobiopterin, also known as BH2, 7,8-dihydrobiopterin, L-erythro-7,8-dihydrobiopterin, quinonoid dihydrobiopterin or q-BH2, belongs to the class of organic compounds known as biopterins and derivatives. These are coenzymes containing a 2-amino-pteridine-4-one derivative. Dihydrobiopterin is also classified as a pteridine. Pteridines are aromatic compounds composed of fused pyrimidine and pyrazine rings. Dihydrobiopterin is produced during the synthesis of neurotransmitters L-DOPA, dopamine, norepinephrine and epinephrine. It is restored to the required cofactor tetrahydrobiopterin via the NADPH-dependant reduction of dihydrobiopterin reductase. Dihydrobiopterin can also be converted to tetrahydrobiopterin by nitric oxide synthase (NOS) which is catalyzed by the flavoprotein "diaphorase" activity of NOS. This activity is located on the reductase (C-terminal) domain of NOS, whereas the high affinity tetrahydrobiopterin site involved in NOS activation is located on the oxygenase (N-terminal) domain (PMID: 8626754). Sepiapterin reductase (SPR) is another enzyme that plays a role in the production of dihydrobiopterin. SPR catalyzes the reduction of sepiapterin to dihydrobiopterin (BH2), the precursor for tetrahydrobiopterin (BH4). BH4 is a cofactor critical for nitric oxide biosynthesis and alkylglycerol and aromatic amino acid metabolism (PMID: 25550200). Dihydrobiopterin is known to be synthesized in several parts of the body, including the pineal gland. Dihydrobiopterin exists in all eukaryotes, ranging from yeast to humans. In humans, dihydrobiopterin is involved in several metabolic disorders including dihydropteridine reductase (DHPR) deficiency. DHPR deficiency is a severe form of hyperphenylalaninemia (HPA) due to impaired regeneration of tetrahydrobiopterin (BH4) leading to decreased levels of neurotransmitters (dopamine, serotonin) and folate in cerebrospinal fluid, and causing neurological symptoms such as psychomotor delay, hypotonia, seizures, abnormal movements, hypersalivation, and swallowing difficulties. Dihydrobiopterin is also associated with another metabolic disorder known as sepiapterin reductase deficiency (SRD). Sepiapterin reductase catalyzes the (NADP-dependent) reduction of carbonyl derivatives, including pteridines, and plays an important role in tetrahydrobiopterin biosynthesis. Low dihydrofolate reductase activity in the brain leads to the accumulation of dihydrobiopterin, which in turn, inhibits tyrosine and tryptophan hydroxylases. This uncouples neuronal nitric oxide synthase, leading to neurotransmitter deficiencies and neuronal cell death. SRD is characterized by low cerebrospinal fluid neurotransmitter levels and the presence of elevated cerebrospinal fluid dihydrobiopterin. SRD is characterized by motor delay, axial hypotonia, language delay, diurnal fluctuation of symptoms, dystonia, weakness, oculogyric crises, dysarthria, parkinsonian signs and hyperreflexia. Dihydrobiopterin (BH2) is an oxidation product of tetrahydrobiopterin. Tetrahydrobiopterin is a natural occurring cofactor of the aromatic amino acid hydroxylase and is involved in the synthesis of tyrosine and the neurotransmitters dopamine and serotonin. Tetrahydrobiopterin is also essential for nitric oxide synthase catalyzed oxidation of L-arginine to L-citrulline and nitric oxide. [HMDB] 7,8-Dihydro-L-biopterin is an oxidation product of tetrahydrobiopterin.
ecdysone
A 6-oxo steroid that is 5beta-cholest-7-en-6-one substituted by hydroxy groups at positions 2, 3, 14, 22 and 25 respectively (the 2beta, 3beta, 22R stereoisomer). It is a steroid prohormone of the major insect moulting hormone 20-hydroxyecdysone. D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones Ecdysone, also known as molting hormone, belongs to pentahydroxy bile acids, alcohols and derivatives class of compounds. Those are bile acids, alcohols or derivatives bearing five hydroxyl groups. Thus, ecdysone is considered to be a sterol lipid molecule. Ecdysone is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Ecdysone can be synthesized from 5beta-cholestane. Ecdysone is also a parent compound for other transformation products, including but not limited to, (25R)-11alpha,20,26-trihydroxyecdysone, (24R)-11alpha,20,24-trihydroxyecdysone, and ecdysone 25-O-D-glucopyranoside. Ecdysone can be found in spinach, which makes ecdysone a potential biomarker for the consumption of this food product. Ecdysone is a steroidal prohormone of the major insect molting hormone 20-hydroxyecdysone, which is secreted from the prothoracic glands. Insect molting hormones (ecdysone and its homologues) are generally called ecdysteroids. Ecdysteroids act as moulting hormones of arthropods but also occur in other related phyla where they can play different roles. In Drosophila melanogaster, an increase in ecdysone concentration induces the expression of genes coding for proteins that the larva requires, and it causes chromosome puffs (sites of high expression) to form in polytene chromosomes. Recent findings in Chris Q. Doe lab have found a novel role of this hormone in regulating temporal gene transitions within neural stem cells. Ecdysone and other ecdysteroids also appear in many plants mostly as a protection agent (toxins or antifeedants) against herbivorous insects. These phytoecdysteroids have been reputed to have medicinal value and are part of herbal adaptogenic remedies like Cordyceps, yet an ecdysteroid precursor in plants has been shown to have cytotoxic properties. A pesticide sold with the name MIMIC has ecdysteroid activity, although its chemical structure has little resemblance to the ecdysteroids . Ecdysone (α-Ecdysone), a major steroid hormone in insects and herbs, triggers mineralocorticoid receptor (MR) activation and induces cellular apoptosis. Ecdysone plays essential roles in coordinating developmental transitions and homeostatic sleep regulation through its active metabolite 20-hydroxyecdysone (Crustecdysone; 20E; HY-N6979)[1][2].
D-Biopterin
D-Biopterin is a pterin which is a chemical compound composed of a pyrazine ring and a pyrimidine ring. The level of biopterin decreases in the urine of patients with guanosine triphosphate cyclohydrolase I. (PMID 10770663) [HMDB] D-Biopterin is a pterin which is a chemical compound composed of a pyrazine ring and a pyrimidine ring. The level of biopterin decreases in the urine of patients with guanosine triphosphate cyclohydrolase I. (PMID 10770663). 6-Biopterin (L-Biopterin), a pterin derivative, is a NO synthase cofactor.
Ecdysone
dihydrobiopterin
7,8-Dihydro-L-biopterin is an oxidation product of tetrahydrobiopterin.
(1r,2s)-1-(4-hydroxy-2-imino-1h-pteridin-6-yl)propane-1,2,3-triol
C9H11N5O4 (253.08110059999998)