Record Information
Version1.0
StatusDetected and Quantified
Creation Date2020-12-10 22:03:42 UTC
Update Date2024-04-30 19:33:46 UTC
Metabolite IDMMDBc0000818
Metabolite Identification
Common NameMethylimidazoleacetic acid
DescriptionMethylimidazoleacetic acid is the main metabolite of histamine. This end product of histamine catabolism is formed by N-methylation in the imidazole ring to methylhistamine by histamine methyltransferase (EC 2.1.1.8) and a subsequent oxidative deamination in the side chain by type B monoamine oxidase (EC 1.4.3.4). Based on studies, it is known that as much as 70 to 80 percent of the histamine metabolized in the body is excreted in the urine as methylimidazoleacetic acid. Thus, urinary methylimidazoleacetic acid being the major and specific histamine metabolite is a clear marker of any changes in histamine metabolism in the body. The urinary excretion of methylimidazoleacetic acid is considered a reliable indicator of histamine turnover rate in the body. The excretion of methylimidazoleacetic acid is higher in men than in women. However, this gender difference is abolished when corrected for creatinine excretion. A possible explanation is that basal histamine turnover is related to body size. There is no significant difference in methylimidazoleacetic acid excretion between smokers and non-smokers when analyzing absolute values (mg/24 h). When using methylimidazoleacetic acid values corrected for creatinine excretion female smokers have significantly higher methylimidazoleacetic acid excretion compared to nonsmokers (PMID:11411609 , 7130180 , 10350179 , 10202992 ).
Structure
Synonyms
ValueSource
1,4-Methyl-imidazoleacetic acidChEBI
1-Methylimidazole-4-acetateChEBI
MethylimidazoleacetateChEBI
tele-Methylimidazoleacetic acidChEBI
1-Methyl-4-imidazoleacetic acidKegg
1,4-Methyl-imidazoleacetateGenerator
1-Methylimidazole-4-acetic acidGenerator
tele-MethylimidazoleacetateGenerator
1-Methyl-4-imidazoleacetateGenerator
1,4-MethylimidazoleacetateHMDB
1-Methyl-1H-imidazole-4-acetateHMDB
1-Methyl-1H-imidazole-4-acetic acidHMDB
Methylimidazole acetateHMDB
MIAAHMDB
N Tau-methylimidazoleacetic acidHMDB
Methylimidazoleacetic acid, hydrochlorideMeSH, HMDB
Molecular FormulaC6H8N2O2
Average Mass140.1399
Monoisotopic Mass140.05857751
IUPAC Name2-(1-methyl-1H-imidazol-4-yl)acetic acid
Traditional Namemethylimidazoleacetic acid
CAS Registry NumberNot Available
SMILES
CN1C=NC(CC(O)=O)=C1
InChI Identifier
InChI=1S/C6H8N2O2/c1-8-3-5(7-4-8)2-6(9)10/h3-4H,2H2,1H3,(H,9,10)
InChI KeyZHCKPJGJQOPTLB-UHFFFAOYSA-N