noun[mass noun] Biochemistry
A substance produced by the pancreas which is converted to insulin.
More example sentences
- Following cleavage of the 24 amino acid signal peptide the protein folds into proinsulin.
- Unlike the single chain precursor of insulin, proinsulin, this new construct retains up to 40 per cent of insulin activity.
- The processing of proinsulin to insulin within the secretory granules of the Golgi complex is dependent on critical levels of pH as well as ATP.
Definition of proinsulin in:
- The US English dictionary