PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8147263-3 1993 Addition of an MAO inhibitor such as pargyline to tissue preparations can increase the HNMT activity assayed --presumably as a result of inhibition of N tau-methylhistamine metabolism by MAO. Pargyline 37-46 histamine N-methyltransferase Homo sapiens 87-91 8147263-7 1993 The activity of the purified HNMT was increased approximately 50% in the presence of pargyline. Pargyline 85-94 histamine N-methyltransferase Homo sapiens 29-33 8147263-8 1993 However, enzyme kinetic experiments showed that pargyline, like many other amines, was a competitive inhibitor of HNMT. Pargyline 48-57 histamine N-methyltransferase Homo sapiens 114-118 8147263-12 1993 When the concentration of the cosubstrate for the reaction, S-adenosyl-L-methionine, was varied in the presence of variable concentrations of pargyline, inhibition of HNMT by pargyline was noncompetitive with regard to the methyl donor, with Kii and Kis values of 1.23 and 0.95 mM, respectively. Pargyline 175-184 histamine N-methyltransferase Homo sapiens 167-171 8147263-13 1993 Finally, several amine compounds related structurally to pargyline were also found to be inhibitors of HNMT. Pargyline 57-66 histamine N-methyltransferase Homo sapiens 103-107