|C-peptide is an endogenous peptide that connects the A and B chains of insulin in the proinsulin form. C-peptide binds cell surfaces, activating Ca2+-dependent signaling pathways. In animal models of diabetes, C-peptide improves Na+/K+ ATPase activity, improving neuropathy symptoms, and prevents glomerular pathology, improving kidney function.|C137H225N37O49|3174.54||+4°C|