Proteins are complex molecules that play many critical roles in the body. They are made up of hundreds or thousands of smaller units called amino acids, which are attached to one another in long chains. There are 20 different types of amino acids that can be combined to make a protein, and the sequence of amino acids determines each protein’s unique 3-dimensional structure and its specific function.

Here are some of the important functions of proteins in the body/06%3A_Proteins/6.05%3A_Proteins_Functions_in_the_Body):

• Repair and build tissues: Proteins help repair and build the bodys tissues, including muscle tissue, skin, and organs.

• Enzymes: Proteins act as enzymes, which carry out almost all of the thousands of chemical reactions that take place in cells. They also assist with the formation of new molecules by reading the genetic information stored in DNA.

• Hormones: Some proteins act as hormones, transmitting signals to coordinate biological processes between different cells, tissues, and organs.

• Structural component: Proteins provide structure and support for cells and tissues. On a larger scale, they also allow the body to move.

• Transport/storage: Proteins bind and carry atoms and small molecules within the body, such as oxygen in the blood.

• Maintain pH and fluid balance: Proteins help maintain proper pH and fluid balance in the body.

• Immune system: Proteins help keep the immune system strong by acting as antibodies that bind to specific foreign particles, such as viruses and bacteria, to help protect the body.

• Energy source: Proteins can act as an energy source when carbohydrates and fats are not available.

In summary, proteins are essential to good health and perform various jobs in the body, including building and repairing tissues, carrying out chemical reactions, transmitting signals, providing structure and support, and maintaining proper pH and fluid balance.