An in vivo characterization of the cleavage site specificity of the insulin cell prohormone processing enzymes.

Abstract excerpt

Most peptide hormones and neurotransmitters are synthesized as larger precursor proteins, which are post-translationally processed to mature bioactive products. An early event in prohormone maturation is endoproteolytic cleavage, occurring usually at pairs of basic amino acids (e.g. Lys-Arg). Since many of the characteristics of a prohormone endoprotease are unknown, distinguishing these enzymes from other...

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