Showing metabocard for Porphobilinogen (HMDB0000245)
Record Information | |||||||||||
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Version | 5.0 | ||||||||||
Status | Detected and Quantified | ||||||||||
Creation Date | 2005-11-16 15:48:42 UTC | ||||||||||
Update Date | 2020-10-09 21:08:42 UTC | ||||||||||
HMDB ID | HMDB0000245 | ||||||||||
Secondary Accession Numbers |
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Metabolite Identification | |||||||||||
Common Name | Porphobilinogen | ||||||||||
Description | Porphobilinogen (PBG) is a pyrrole-containing intermediate in the biosynthesis of porphyrins. It is generated from aminolevulinate (ALA) by the enzyme ALA dehydratase. Porphobilinogen is then converted into hydroxymethylbilane by the enzyme porphobilinogen deaminase (also known as hydroxymethylbilane synthase). Under certain conditions, porphobilinogen can act as a phototoxin, a neurotoxin, and a metabotoxin. A phototoxin leads to cell damage upon exposure to light. A neurotoxin causes damage to nerve cells and nerve tissues. A metabotoxin is an endogenously produced metabolite that causes adverse health effects at chronically high levels. Chronically high levels of porphyrins are associated with porphyrias such as porphyria variegate, acute intermittent porphyria, and hereditary coproporphyria (HCP). There are several types of porphyrias (most are inherited). Hepatic porphyrias are characterized by acute neurological attacks (seizures, psychosis, extreme back and abdominal pain, and an acute polyneuropathy), while the erythropoietic forms present with skin problems (usually a light-sensitive blistering rash and increased hair growth). The neurotoxicity of porphyrins may be due to their selective interactions with tubulin, which disrupt microtubule formation and cause neural malformations (PMID: 3441503 ). | ||||||||||
Structure | |||||||||||
Synonyms |
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Chemical Formula | C10H14N2O4 | ||||||||||
Average Molecular Weight | 226.2292 | ||||||||||
Monoisotopic Molecular Weight | 226.095356946 | ||||||||||
IUPAC Name | 3-[5-(aminomethyl)-4-(carboxymethyl)-1H-pyrrol-3-yl]propanoic acid | ||||||||||
Traditional Name | porphobilinogen | ||||||||||
CAS Registry Number | 487-90-1 | ||||||||||
SMILES | NCC1=C(CC(O)=O)C(CCC(O)=O)=CN1 | ||||||||||
InChI Identifier | InChI=1S/C10H14N2O4/c11-4-8-7(3-10(15)16)6(5-12-8)1-2-9(13)14/h5,12H,1-4,11H2,(H,13,14)(H,15,16) | ||||||||||
InChI Key | QSHWIQZFGQKFMA-UHFFFAOYSA-N | ||||||||||
Chemical Taxonomy | |||||||||||
Description | Belongs to the class of organic compounds known as aralkylamines. These are alkylamines in which the alkyl group is substituted at one carbon atom by an aromatic hydrocarbyl group. | ||||||||||
Kingdom | Organic compounds | ||||||||||
Super Class | Organic nitrogen compounds | ||||||||||
Class | Organonitrogen compounds | ||||||||||
Sub Class | Amines | ||||||||||
Direct Parent | Aralkylamines | ||||||||||
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Substituents |
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Molecular Framework | Aromatic heteromonocyclic compounds | ||||||||||
External Descriptors |
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Ontology | |||||||||||
Physiological effect | Health effect
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Disposition | Biological location
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