LongevityMap Gene
Gene details
- HGNC symbol
- HNMT
- Aliases
- HMT; MRT51; HNMT-S1; HNMT-S2
- Common name
- histamine N-methyltransferase
- Description
- In mammals, histamine is metabolized by two major pathways: N(tau)-methylation via histamine N-methyltransferase and oxidative deamination via diamine oxidase. This gene encodes the first enzyme which is found in the cytosol and uses S-adenosyl-L-methionine as the methyl donor. In the mammalian brain, the neurotransmitter activity of histamine is controlled by N(tau)-methylation as diamine oxidase is not found in the central nervous system. A common genetic polymorphism affects the activity levels of this gene product in red blood cells. Multiple alternatively spliced transcript variants that encode different proteins have been found for this gene. [provided by RefSeq, Jul 2008]
- Cytogenetic Location
- 2q22.1
- UCSC Genome Browser
- View 2q22.1 on the UCSC genome browser
- OMIM
- 605238
- Ensembl
- ENSG00000150540
- UniProt/Swiss-Prot
- B4DWC1_HUMAN
- Entrez Gene
- 3176
- UniGene
- 42151
- 1000 Genomes
- 1000 Genomes
Homologs in model organisms
Studies (1)
Significant/Non-significant: 0/1
- Longevity Association
- Non-significant
- Population
- Italian (Southern)
- Study Design
- A two-stage case-control study was performed to identify the association between longevity and variation of in homeostasis regulation pathway genes. 317 SNPs in 104 genes were analyzed in 78 cases (≥90 years, median age 98 years, 42 females) and 71 controls (<90 years, median age 67 years, 32 females) in stage 1. Then, 31 candidate SNPs identified in stage 1 (π markers = 0.1) were analyzed in an independent sample composed by 288 cases (≥90 years, median age 92 years, 163 females) and 554 controls (<90 years, median age 67 years, 277 females).
- Conclusions
- After adjustment for multiple testing, no significant association was identified between various SNPs and longevity.
- Indentifier
- rs3100701
- Reference