8 Significant Functions Of Protein In Your Body

Proteins are vital macronutrients that play numerous roles in the body, from building and repairing tissues to supporting immune function. Understanding the function of protein and how it works in the body can help you appreciate its importance in your diet. In this blog, we'll explore what protein is, how it functions in the human body, the top eight functions of proteins, and major sources of protein.

What Is Protein?

Proteins are large, complex molecules made up of amino acids, which are the building blocks of life. These amino acids are linked together in specific sequences to form proteins, which then fold into unique three-dimensional shapes. These shapes determine the specific function of each protein. There are 20 different amino acids, and the sequence and structure of these amino acids dictate the diverse roles proteins play in the body.

How Does Protein Work in the Human Body?

Before sharing insights into the incredible functions of protein in the body, let’s take a moment to understand how it works! The protein we eat, how it breaks down in our body, and how it gives us the fuel we need – let’s explore!

Step 1: Ingestion and Digestion

The journey of protein in the body begins with ingestion. When you eat foods rich in protein, such as meat, beans, or dairy, the proteins are broken down by enzymes in the stomach into smaller peptides.

Step 2: Digestion in the Small Intestine

These peptides then move to the small intestine, where they are further broken down into individual amino acids by pancreatic enzymes.

Step 3: Absorption

The amino acids are absorbed through the walls of the small intestine into the bloodstream. This is a critical step in the function of protein, as it allows these building blocks to be distributed throughout the body.

Step 4: Distribution and Utilization

Once in the bloodstream, amino acids are transported to various cells and tissues. They are utilized for a variety of functions, including building new proteins, repairing tissues, and supporting metabolic processes.

Top 8 Functions of Proteins

So, now it's time to reveal the importance of protein in the body!

1. Enzyme Catalysis

It is one of the most significant functions of proteins! Proteins act as enzymes that speed up biochemical reactions in the body. These enzymes are crucial for digestion, energy production, and many other metabolic processes.

2. Structural Support

When it comes to the important function of protein in the body, nothing would come first than the matter of structural support! Proteins provide structural support to cells and tissues. Collagen, for example, is a protein that gives strength and elasticity to skin, bones, and connective tissues.

3. Transport and Storage

Among the variety of functions of proteins, it is another important function! Proteins help transport and store molecules. Hemoglobin, a protein in red blood cells, transports oxygen from the lungs to tissues throughout the body.

4. Cellular Communication

The function of protein is also involved in cellular communication, sending and receiving signals that regulate bodily functions. Receptor proteins on cell surfaces bind to signaling molecules and trigger a response within the cell.

5. Immune Response

It is one of the most recognized protein functions! Proteins play a key role in the immune system. Antibodies, which are proteins, recognize and neutralize foreign invaders like bacteria and viruses.

6. Movement

Proteins are essential for movement. Actin and myosin, proteins found in muscle fibers, work together to contract and relax muscles.

7. Hormonal Regulation

Some proteins function as hormones, which regulate physiological processes. Insulin, for instance, is a protein hormone that helps control blood sugar levels.

8. Cellular Signaling

Last but not the least, the functions of proteins Proteins are crucial for cellular signaling pathways. They transmit signals within and between cells, ensuring proper cellular function and response to the environment.

Major Sources of Protein

Protein can be sourced from both plant and animal foods. Major animal sources include meat, fish, poultry, eggs, and dairy products. Plant sources of protein include beans, lentils, tofu, tempeh, nuts, seeds, and certain grains like quinoa.

For more details on vegetarian protein sources, check out our previous blog on Top Veg Protein Sources to Fuel Your Fitness Goal.

Additionally, protein powders are a convenient and efficient source of protein, especially for those with increased protein needs or dietary restrictions. For gym-goers, fitness enthusiasts, and sports persons, if you are short on time and need an extra boost of protein in your daily diet, don’t forget about Scitron whey protein powder!

Scitron Advance Whey Protein is one of the tastiest, Labdoor-certified protein powders, serving 25.5 grams of high-quality protein per serving.

For different fitness goals like losing weight, gaining muscle, mass gain, and improving gut health along with maintaining your protein needs, you can also add our Scitron Advance Isolate Whey, Scitron Nitro Series Premium Whey Protein, and Scitron Hydrolyzed Synbiotic!

Summing Up!

The function of protein in the body is multifaceted and essential for overall health. From enzyme catalysis and structural support to immune response and cellular signaling, proteins are involved in nearly every aspect of bodily function. Ensuring an adequate intake of protein from various sources, including plant and animal foods, as well as protein supplements, can help maintain these crucial functions of proteins.

Need a more healthy recipe inspo? We've got you covered! Check out our Recipes now! Unleash the power of protein and unlock your full potential.