Protein
Proteins nitrogen contain high molecular mask polymeric organic compound in which Alpha amino acid act as a monomeric unit.
The structure of protein are also known as polypeptide chain which contain large number of Alpha amino acid link through peptide bond.
Structures of Protein
There are four structure of protein exist for the explanation of the action of protein in various metabolic activity.
1. Primary Structure of Protein
It is a very simple structure of protein in which the force of attraction between atoms are found to be very negligible as well as primary structure of protein exist simple long thread like structure.
2. Secondary Structure of Protein
It is a little complex structure has compared to primary structure of protein in which nitrogen of Alpha amino acid attract with hydrogen of another Alpha amino acid with the help of hydrogen bond in same polypeptide chain hence bond in a same poly peptide chain hence little become existence which makes secondary structure of proteins a slightly complex.
3. Tertiary structure of Protein
It is more complex structure has compared to primary and secondary structure of protein in such structure polypeptide chain become coiled due to excessive interactomy force of attraction like hydrogen bond, wander wall force of attraction.
4. Quaternary Structure of Protein
It is more complex structure of protein in which the efficiency of protein is hundred percent therefore is also known as native state of protein in such a structure the course of attraction between atoms are maximum all these three important force of attraction like wander wall, hydrogen bond, disulphide bond is present due to all these force of attraction polypeptide chain become maximum coiled and giving rise quarternary structure of protein.
Protein can be classified into two part:
- Fibrous protein
- Globalular protein
1. Fibrous Protein
These are fiber life structure and also insoluble inverter but soluble in a strong acid.
Examples: like keratin protein (in hair) myosin protein (in muscles).
2. Globular Protein
These are proteins which are found in globule form and are soluble in water.
Examples: hemoglobin and albumin in egg.