Proteins are extremely complicated molecules of living things. They are: Nitrogenous compound made up of a variable number of amino acids. The human body probably contains at least 10,000 different kinds of proteins .The name protein is derived from the Greek word "proteins" meaning of 'prime importance'.
Proteins are present in all living organisms and without proteins life would not be possible. They are present in muscles, skin, hair and other tissue that make up the bulk of the body non-bony structure .All proteins contain the element of carbon, hydrogen, oxygen, nitrogen and sulpher. They may also contain phosphorus and traces of other elements like iron, copper, iodine, manganese and zinc.
Protein takes an essential part in the formation of protoplasm, which is essence of all forms of life. Enzymes, which are biological catalysts, are protein in nature. Without them life is not possible. Many proteins have specialized function. Hemoglobin acts as a carrier of oxygen. Some proteins act as hormones which have regularity function for example; insulin, thyroxin etc. Nucleoproteins, which are complexes of proteins with nucleic acids, serve as carrier of heredity from one generation to the other generation.
Proteins are present in all living organisms and without proteins life would not be possible. They are present in muscles, skin, hair and other tissue that make up the bulk of the body non-bony structure .All proteins contain the element of carbon, hydrogen, oxygen, nitrogen and sulpher. They may also contain phosphorus and traces of other elements like iron, copper, iodine, manganese and zinc.
Protein takes an essential part in the formation of protoplasm, which is essence of all forms of life. Enzymes, which are biological catalysts, are protein in nature. Without them life is not possible. Many proteins have specialized function. Hemoglobin acts as a carrier of oxygen. Some proteins act as hormones which have regularity function for example; insulin, thyroxin etc. Nucleoproteins, which are complexes of proteins with nucleic acids, serve as carrier of heredity from one generation to the other generation.