What bonds are present in each type of structure of a protein?
PRIMARY PROTEIN STRUCTURE
This is the sequence of amino acids in a polypeptide chain. These are bonded together by strong covalent bonds.
SECONDARY PROTEIN STRUCTURE
The secondary structure is the shape that the polypeptide chain forms as a result of hydrogen bonding. Hydrogen bonds can only form between nitrogen, oxygen, hydrogen and flourine.
These bonds form spiral shapes called alpha helicles or beta pleated sheets.
TERTIARY STRUCTURE
This is the folding of the secondary structure to form a complex 3 dimensional structure. This is achieved by the following bonding:
1. Disulphide bonds
2. Ionic bonds
3. Hydrogen bonds
JJ
Related Biology A Level answers
All answers ▸How does a signal move from one neurone to another and how does this process change for different motor responses?
In answer section.
How is the electrical activity of a heartbeat coordinated?
Identify the differences between motor and sensory neurons in terms of features and function.