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Insulin in Humans

Question

Human insulin contains how many amino acids on B chain?
$51$
$21$
$30$
$31$

A

51

B

31

C

21

D

30

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Solution

Verified by Toppr

Insulin is a protein which is made up of two polypeptide chains. The two polypeptide chains are designated as A and B. A chain has 21 amino acid residues and B chain has 30 amino acid residues. The two chains are linked by disulphide bonds.
So, the correct answer is C.

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Similar Questions

Q1

Human insulin contains how many amino acids on B chain?

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Q2

Total amino acids in insulin (bovine) are 51 in polypeptide chains A and B. How many amino acids are there in chain A?

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Q3

In Insulin molecule, there are two chains A and B. "A" contains "X" amino acids & "B" contains "Y" amino acids. The values of X and Y are:

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Q4

Which of the following statements regarding the structure of proinsulin and mature insulin are not correct?
(i) Proinsulin is made up of three polypeptide chains A, B, and C.
(ii) C-polypeptide chain with 33 amino acids is removed prior to insulin formation.
(iii) Mature insulin is made up of 51 amino acids and arranged in two polypeptide chains-A and B.
(iv) Polypeptide chain A has 30 amino acids and polypeptide chain B has 21 amino acids.
(v) Polypeptide chains A and B are interconnected by only one S-S linkage.

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Q5

Insulin (bovine) has

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amino acids in

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and

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A

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