# The number of disulphide linkages present in insulin are

$\begin {array} {1 1} (A)\;3 & \quad (B)\;4 \\ (C)\;1 & \quad (D)\;2 \end {array}$

Insulin is composed of two chains it has 2 disulphide linkages

Insulin has 3 disulphide bridges
Ans : (A)