1.

Why is proinsulin so called? How is insulin different from it?

Answer»

Proinsulin is called so because it is an inactive form of insulin.

S. No.InsulinProinsulin
(i)It is made up of two short polypeptide chains A and B linked by disulphideAlong with the two polypeptide chains in insulin. It contains an extra stretch called C peptide.
(ii)bridges.
It is functional.It is non-functional


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