title: Enzyme cleavable and biotinylated photoaffinity ligand with diazirine.
abstract: The efficient synthesis of an enzyme cleavable biotinylated diazirinyl photoaffinity ligand is described to allow the effective manipulation of the photolabeled biocomponents. The compound contains a glutamic acid gamma-methyl ester, which is a precursor of the substrate for V8 protease, between the diazirinyl photophor and biotin moiety. After alkaline hydrolysis of the ester, the compound can be proteolyzed at the Glu moiety by V8 protease. The photophore was introduced to L-Phe p-nitroanilide and the ligand was applied to photolabel of chymotrypsin to manipulate the application of the concept.
authors.affiliation: Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan. hasimoto@obihiro.ac.jp
authors.forename: Makoto
authors.initials: M
authors.lastname: Hashimoto
authors.forename: Shun'ji
authors.initials: S
authors.lastname: Okamoto
authors.forename: Kensuke
authors.initials: K
authors.lastname: Nabeta
authors.forename: Yasumaru
authors.initials: Y
authors.lastname: Hatanaka
mesh_terms: D019921:Biotinylation; D002918:Chymotrypsin / Q000032:analysis* / Q000737:chemistry; D003432:Cross-Linking Reagents; D003978:Diazomethane / Q000737:chemistry*; D007700:Kinetics; D008024:Ligands; D019920:Photoaffinity Labels / Q000138:chemical synthesis* / Q000378:metabolism; D012697:Serine Endopeptidases / Q000378:metabolism*
chemical_list: D003432:Cross-Linking Reagents; D008024:Ligands; D019920:Photoaffinity Labels; D003978:Diazomethane; D012697:Serine Endopeptidases; D002918:Chymotrypsin; C028344:glutamyl endopeptidase