title: Synthesis of lysine-containing sulphonium salts and their properties as proteinase inhibitors.
abstract: Some sulphonium salts derived from lysine were synthesized with the general structure R-Lys-CH2S+-(alkyl)2. They were examined as inhibitors of the cysteine proteinase clostripain, which has a preference for cleaving peptide bonds at the carboxy group of basic amino acids, and of a number of trypsin-related serine proteinases. Clostripain was irreversibly inactivated by all reagents examined, but in the case of the serine proteinases, depending on the reagent structure, irreversible and reversible inhibitions were observed. These were kinetically characterized.
authors.affiliation: Friedrich Miescher-Institut, Basel, Switzerland.
authors.forename: P
authors.initials: P
authors.lastname: Rauber
authors.forename: B
authors.initials: B
authors.lastname: Walker
authors.forename: S
authors.initials: S
authors.lastname: Stone
authors.forename: E
authors.initials: E
authors.lastname: Shaw
mesh_terms: D003546:Cysteine Endopeptidases; D015853:Cysteine Proteinase Inhibitors; D005341:Fibrinolysin / Q000037:antagonists & inhibitors; D006868:Hydrolysis; D007610:Kallikreins / Q000037:antagonists & inhibitors; D007700:Kinetics; D008239:Lysine; D009861:Onium Compounds / Q000494:pharmacology*; D011480:Protease Inhibitors / Q000138:chemical synthesis / Q000494:pharmacology*; D013452:Sulfonium Compounds / Q000138:chemical synthesis / Q000494:pharmacology*; D014361:Trypsin Inhibitors / Q000494:pharmacology
chemical_list: D015853:Cysteine Proteinase Inhibitors; D009861:Onium Compounds; D011480:Protease Inhibitors; D013452:Sulfonium Compounds; D014361:Trypsin Inhibitors; D007610:Kallikreins; D005341:Fibrinolysin; D003546:Cysteine Endopeptidases; C019913:clostripain; D008239:Lysine