Kexin
Definition:
EC Tree > 3 Hydrolases > 3.4 Acting on peptide bonds (peptidases) > 3.4.21 Serine endopeptidases > 3.4.21.61 Kexin
Kexin (kex2 protease) is a Ca2+-activated subtilisin-like proprotein convertase in family S8, containing Cys near active-site His and inhibited by p-mercuribenzoate, with similar enzymes in mammals; it cleaves Lys-Arg and Arg-Arg bonds to process the yeast alpha-factor pheromone and killer-toxin precursors. By processing fungal mating pheromones and killer toxin it enables yeast secretion.
Kexin (kex2 protease) is a Ca2+-activated subtilisin-like proprotein convertase in family S8, containing Cys near active-site His and inhibited by p-mercuribenzoate, with similar enzymes in mammals; it cleaves Lys-Arg and Arg-Arg bonds to process the yeast alpha-factor pheromone and killer-toxin precursors. By processing fungal mating pheromones and killer toxin it enables yeast secretion.
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