The Various functions of Protein | Physio4Life

The Various functions of Protein

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The Various functions of Protein

The major role of protein is to provide the building blocks of skeletal muscle via their constituent Amino Acids. Many people are only aware of this function and therefore perceive protein as a macronutrient which only increases muscle mass.


For those who wish to lose fat need to create a calorie deficit. This increases the risk of losing muscle tissue and therefore reducing metabolism. One key practice is to increase protein which improves maintenance of muscle tissue.


Proteins are also involved in many other important processes in the body.


Here are seven other important functions of protein within the human body:


  1. Many proteins function as enzymes which are defined as substances that can accelerate biochemical reactions within the body. If enzymatic activity is compromised, the human body will not function optimally
  2. There are substances that are transported in and out of cells. The transportation is possible through the action of protein. For example, the oxygen we breathe is transported around our body by the protein Haemoglobin.
  3. Many proteins also function as hormones.
  4. Many Proteins are also involved in signalling roles involving cell to cell communication
  5. Two very important proteins, Actin and Myosin are responsible for muscle contraction
  6. Proteins have structural roles within the body, including collagen (skin and bones structure) and Keratin (forms basis for hair and nails).
  7. Antibodies are proteins produced by cells of the immune system and they play an important role in fighting against infections.


Happy Health

Daniel Wellard

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