Choline is a cation with the chemical formula [(CH3)3NCH2CH2OH]+. Choline forms various salts, for example choline chloride and choline bitartrate.
Phosphatidylethanolamine (PE) is a class of phospholipids found in biological membranes. They are synthesized by the addition of cytidine diphosphate-ethanolamine to diglycerides, releasing cytidine monophosphate. S-Adenosyl methionine can subsequently methylate the amine of phosphatidylethanolamines to yield phosphatidylcholines.
N-Acetylserotonin O-methyltransferase, also known as ASMT, is an enzyme which catalyzes the final reaction in melatonin biosynthesis: converting Normelatonin to melatonin. This reaction is embedded in the more general tryptophan metabolism pathway. The enzyme also catalyzes a second reaction in tryptophan metabolism: the conversion of 5-hydroxy-indoleacetate to 5-methoxy-indoleacetate. The other enzyme which catalyzes this reaction is n-acetylserotonin-o-methyltransferase-like-protein.
In enzymology, an amine N-methyltransferase is an enzyme that is ubiquitously present in non-neural tissues and that catalyzes the N-methylation of tryptamine and structurally related compounds.
In enzymology, a caffeate O-methyltransferase is an enzyme that catalyzes the chemical reaction
In enzymology, a carnosine N-methyltransferase is an enzyme that catalyzes the chemical reaction
In enzymology, a glycine N-methyltransferase is an enzyme that catalyzes the chemical reaction
Guanidinoacetate N-methyltransferase is an enzyme that catalyzes the chemical reaction and is encoded by gene GAMT located on chromosome 19p13.3.
In enzymology, a homocysteine S-methyltransferase is an enzyme that catalyzes the chemical reaction
In enzymology, an indolepyruvate C-methyltransferase is an enzyme that catalyzes the chemical reaction
In enzymology, a methionine S-methyltransferase is an enzyme that catalyzes the chemical reaction
In enzymology, a nicotinate N-methyltransferase is an enzyme that catalyzes the chemical reaction
In enzymology, a phenol O-methyltransferase is an enzyme that catalyzes the chemical reaction
Phosphatidylethanolamine N-methyltransferase is a transferase enzyme which converts phosphatidylethanolamine (PE) to phosphatidylcholine (PC) in the liver. In humans it is encoded by the PEMT gene within the Smith–Magenis syndrome region on chromosome 17.
In enzymology, a phosphoethanolamine N-methyltransferase is an enzyme that catalyzes the chemical reaction
In enzymology, a putrescine N-methyltransferase is an enzyme that catalyzes the chemical reaction
In enzymology, a thioether S-methyltransferase is an enzyme that catalyzes the chemical reaction.
In enzymology, a thiol S-methyltransferase is an enzyme that catalyzes the chemical reaction
In enzymology, a tyramine N-methyltransferase is an enzyme that catalyzes the chemical reaction
Caffeine synthase is a methyltransferase enzyme involved in the caffeine biosynthesis pathway. It is expressed in tea species, coffee species, and cocoa species. The enzyme catalyses the following reactions:
