An example of a sulphur-containing amino acid is:

Which of the following bonds is $NOT$ involved in the quaternary structure of proteins?

Why are amino acids amphoteric in nature?

$A$ - In the solution of different $pH$,the structure of amino acids changes.
$R$ - It is because of the ionisable nature of $-NH_2$ and $-COOH$ groups.

Which functional group is involved in the formation of disulfide bonds in proteins?

The basic structure of proteins was proposed by which of the following scientists?