How many disulfide bonds are present in the s | vedclass

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(C) Insulin is a peptide hormone composed of two polypeptide chains,chain $A$ and chain $B$,which are linked together by disulfide bonds.Chain $A$ con

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Three

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(C) Insulin is a peptide hormone composed of two polypeptide chains,chain $A$ and chain $B$,which are linked together by disulfide bonds.Chain $A$ consists of $21$ amino acids,and chain $B$ consists of $30$ amino acids.These two chains are connected by $2$ inter-chain disulfide bonds.Additionally,there is $1$ intra-chain disulfide bond within chain $A$.Therefore,the total number of disulfide bonds in the mature insulin molecule is $2 + 1 = 3$.

List-$I$	List-$II$
$A$. Collagen	$I$. Enzyme
$B$. $\text{GLUT}-4$	$II$. Most abundant enzyme in biosphere
$C$. Trypsin	$III$. Most abundant protein in animal world
$D$. RuBisCO	$IV$. Enables glucose transport into cells

How many disulfide bonds are present in the structure of insulin?

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