Mass spectrometric characterization and activity of zinc-activated proinsulin C-peptide and C-peptide mutants.

Abstract excerpt

Numerous reports have demonstrated an active role for proinsulin C-peptide in ameliorating chronic complications associated with diabetes mellitus. It has been recently reported that some of these activities are dependent upon activation of C-peptide with certain metal ions, such as Fe(II), Cr(III) or Zn(II). In an effort to gain a greater understanding of the structure/function dependence of the peptide-metal...

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