What is proinsulin?

1 Answer

Answer :

Insulin is synthesised as a large single polypeptide. Middle part of it is then removed, to form the A and B chains of insulin.

Related questions

Description : Proinsulin has (A) 74 amino acids (B) 86 amino acids (C) 105 amino acids (D) 109 amino acids

Last Answer : Answer : B

Description : Pre-proinsulin contains a signal sequence having (A) 9 amino acid residues (B) 19 amino acid residues (C) 27 amino acid residues (D) 33 amino acid residues

Last Answer : Answer : B

Description : A protein rich in hydroxyproline is (A) Prolamin (B) Procollagen (C) Collagen (D) Proinsulin

Last Answer : Answer : C

Description : Which of the following statements is not correct? (a) In man insulin is synthesised as a proinsulin. (b) The proinsulin has an extra peptide called C-peptide. (c) The functional insulin has A and B chains linked together by hydrogen bonds. (d) Genetically engineered insulin is produced in E.Coli.

Last Answer : (c) The functional insulin has A and B chains linked together by hydrogen bonds.

Description : With regard to insulin: a. it is a 51 amino acid peptide b. it is formed by removal of C-chain from proinsulin c. it is produced by the alpha cells of the pancreas d. it alters the rate of enzyme synthesis

Last Answer : it alters the rate of enzyme synthesis

Description : Human insulins are obtained by the following sources/methods except: A. Cadaver pancreas B. Proinsulin recombinant bacterial C. Precursor yeast recombinant D. Enzyme modification of pork insulin

Last Answer : . Cadaver pancreas