Which of the following is the most abundant protein in animal world?

Option 2 : Collagen

The correct answer is option 2, i.e. Collagen.

• Collagen is the most abundant protein in the world.
• It is responsible for skin elasticity.
• It mainly provides structural support in connective tissue, muscle and skin.
• Amino acids are known as the “building blocks” of protein and they are required in muscle building, tissue repair.
• Insulin is a hormone, contains two polypeptide change connected sulfur bond.
• Receptors are made by proteins, essential for many biochemical pathways.
• GLUT-4 enables glucose transport into cells.