00:01
Hello students, first we'll understand the structure of protein.
00:05
So talking about the primary structure than it is made up of sequence of amino acids which are linked together by peptide bond.
00:12
So let's say this is the amino acid which is linked to another amino acid through this peptide bond.
00:18
So this is the primary structure.
00:20
Talking about the secondary structure than there are two types of secondary structure that is the alpha -beta -beta -plated and alpha helix which are produced by hydrogen bonds forming within the polypeptide.
00:36
So the alpha helix will in such way the let's say these are the amino acid and these are the how the alpha helix are formed and then beta -shaded are in this way.
00:50
So this is the secondary structure.
00:52
Then there is tertiary structure which is a 3d overall fold of the protein which contain this secondary structure.
01:00
So when this secondary structure will fold it will form a 3d structure and will give rise to a tertiary structure and then finally quaternary structure in this let's say this is one 3d structure of protein and this is the other and this is the other.
01:25
So these three different tertiary structure will form a distinct polypeptide chain and all together will known as the quaternary structure of protein.
01:37
This involves different interactions such as van der waals force, hydrogen, hydrophobic, disulfide bonds are present, peptide bonds are present...