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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2020-10-09 21:08:42 UTC
HMDB IDHMDB0000245
Secondary Accession Numbers
  • HMDB00245
Metabolite Identification
Common NamePorphobilinogen
DescriptionPorphobilinogen (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
Data?1582752118
Synonyms
ValueSource
5-(Aminomethyl)-4-(carboxymethyl)-pyrrole-3-propionateHMDB
5-(Aminomethyl)-4-(carboxymethyl)-pyrrole-3-propionic acidHMDB
PBGHMDB
PorphobilinogenHMDB
Chemical FormulaC10H14N2O4
Average Molecular Weight226.2292
Monoisotopic Molecular Weight226.095356946
IUPAC Name3-[5-(aminomethyl)-4-(carboxymethyl)-1H-pyrrol-3-yl]propanoic acid
Traditional Nameporphobilinogen
CAS Registry Number487-90-1
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 KeyQSHWIQZFGQKFMA-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.
KingdomOrganic compounds
Super ClassOrganic nitrogen compounds
ClassOrganonitrogen compounds
Sub ClassAmines
Direct ParentAralkylamines
Alternative Parents
Substituents
  • Aralkylamine
  • Dicarboxylic acid or derivatives
  • Substituted pyrrole
  • Heteroaromatic compound
  • Pyrrole
  • Amino acid
  • Amino acid or derivatives
  • Carboxylic acid derivative
  • Azacycle
  • Carboxylic acid
  • Organoheterocyclic compound
  • Organopnictogen compound
  • Primary amine
  • Organooxygen compound
  • Primary aliphatic amine
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Carbonyl group
  • Organic oxide
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External Descriptors
Ontology
Physiological effect
Disposition
Biological locationRoute of exposureSource