What Are Proteins:
Proteins are long chains of amino acids. Amino acids are the building blocks of protein. Protein chains are then twisted together in specific ways to create certain molecules.
Proteins play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body’s tissues and organs.
Our human body is made up of approximately 100 trillion cells. Each cell contains thousands of different proteins, which together cause the cell to do its specific job. The proteins are tiny molecules within the cell.
Roles Of Protein In Body:
Unlike carbohydrates or fats which can provide us with energy, proteins typically are used to build parts of the cell. In other words they are some of the raw materials the cell needs to make cells and tissues.
When an excess of protein is eaten, the extra protein can be broken down into energy-yielding compounds.
Because protein is far scarcer than carbohydrates and yields the same 4 calories per gram, the consumption of protein beyond the tissue-building demands of the body becomes an inefficient way to produce energy.
Different Types Of Proteins:
There are many different types of proteins in our bodies. They all have importance in growth, development and functioning of body. Below are some of them:
- Hormone proteins co-ordinate bodily functions, for example, insulin controls our blood sugar concentration by regulating the uptake of glucose into cells.
- Enzymes are proteins that facilitate biochemical reactions, for example, pepsin is a digestive enzyme in our stomach that helps in breaking down proteins consumed through food.
- Transport proteins are responsible for moving molecules around our bodies, for example, haemoglobin transports oxygen through the blood.
- Antibodies are proteins produced by the immune system to help remove foreign substances and fight infections.
- DNA-associated proteins regulate chromosome structure during cell division and/or play a role in regulating gene expression, for example, histones and cohesin proteins
- Contractile proteins are involved in muscle contraction and movement, for example, actin and myosin
- Structural proteins provide support in our bodies, for example, the proteins in our connective tissues, such as collagen and elastin.
Sources Of Proteins:
- Whole Wheat
- Soy beans
- Chicken / Turkey
- Peanut Butter
- Dairy Products
- Cow’s Milk
- Unpolished Rice
- Brown Rice
- White Rice
- Whole-grain Wheat
- Dry Beans
- White Potato