Aliases for HNMT Gene
External Ids for HNMT Gene
Previous GeneCards Identifiers for HNMT Gene
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]
GeneCards Summary for HNMT Gene
HNMT (Histamine N-Methyltransferase) is a Protein Coding gene. Diseases associated with HNMT include Asthma and Autosomal Recessive Non-Syndromic Intellectual Disability. Among its related pathways are Histidine metabolism and Histidine, lysine, phenylalanine, tyrosine, proline and tryptophan catabolism. GO annotations related to this gene include N-methyltransferase activity and histamine N-methyltransferase activity.
UniProtKB/Swiss-Prot for HNMT Gene
Inactivates histamine by N-methylation. Plays an important role in degrading histamine and in regulating the airway response to histamine.
Protein arginine methyltransferases are enyzmes that catalyze the transfer of methyl groups from S-adenosylmethionine (SAM) to the arginine residues on histones and other proteins. The dysregulation of this methylation is critical in the development of certain cancers.