What are the top 10 main functions of Proteins?

by wellnessnutrition | 2021-04-26

Proteins are the building blocks of the human body. They are a class of macromolecules that help in numerous functions of the human body. Organized at four levels, proteins work as enzymes, carriers, and hormones. Proteins do most of the duties in the cells regarding structure, function, and regulation of the body tissues as well as body organs. They are made up of around twenty amino acids, attached to a long chain. Often people question ‘what are the 10 main functions of the protein.’ This blog brings into the limelight the same issue.

TOP 10 Main Functions of Proteins

Coming on to the main issue of what are the 10 main functions of protein, we have the following:

Transports Oxygen

The most eminent function of protein is that it makes up red blood cells. The result is that more oxygen is transported in the human body and adds to one’s hemoglobin, which is usually found in red blood cells.

Growth and Maintenance

The second of the ten main functions of protein is that it caters to the growth and maintenance of human body tissues. Proteins constantly remain in a state of turnover. Usually, our body breaks down the same amount of proteins that it uses to build and repair tissues. In other situations like illness, surgery, and pregnancy, it breaks more protein and so it becomes crucial to consume protein supplements.

Biochemical Reactions

Proteins also manage the biochemical reactions of the human body, both taking place inside and outside of the cell. Protein substrates and catalyzes reactions that are essential to your metabolism. Digestive enzymes also control sugar.


The next of the ten main functions of protein is that it acts as a messenger. Some proteins are hormones that are chemical messengers. They manage communication between cells, tissues, and organs.


Furthermore, proteins are fibrous, and they provide cells and tissues with stiffness and rigidity. They have keratin, collagen, and elastin, which together form a connective framework of certain structures.

Maintains ph

Ph refers to the acid, base ratio in your blood and other bodily fuels. ph is maintained with the right dose of proteins in your body.

Balances fluids

Protein has this important function where they maintain fluid balance in the human body. The protein albumin and globulin help in maintain fluid balance by attracting and retaining water. If there is a deficiency of proteins it leads to problems like swelling, and kwashiorkor.

Bolsters immune health

Furthermore, proteins help in forming immunoglobulin, or antibodies, which in turn fights infection. Antibodies are proteins in modified forms, they fight all the foreign invaders in one’s body. It is because of these antibodies that a particular bacteria or virus is prohibited to multiply.

Transports and stores nutrients

Many of us do not know proteins help in the transportation and storing of nutrients. Protein carries essential substances throughout our bloodstream. These substances include vitamins, minerals, blood sugar, cholesterol, and oxygen. Proteins also carry specific substances that bind with other specific substances.

Provides energy

Final on the list is that protein provides energy. Protein contains four calories per gram which is equivalent to the same energy that carbs contain. Protein, however, is favorable to consume, since it performs tons of other functions along with providing carbs.

That wraps up the  10 main functions of proteins in the human body.

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