Friday, June 24, 2016

Enzymes in Our Bodies: How Do They Function?

Enzymes are organic molecules (characteristically proteins) that drastically increase the pace of nearly all the chemical reaction occurring within the cells.

They are fundamental for life and fulfill an array of significant roles within the body, such as facilitating absorption of food and metabolism.

There are some enzymes that aid in breaking down large molecules into smaller sizes that are far more simply absorbed by the human body. Then, there are other enzymes that assist in binding two molecules to come up with a new one. By and large, enzymes are extremely discerning catalysts. This means that a single kind of enzyme can speed up a particular reaction.

Stated below are some of the most important functions of enzymes:

They are Catalysts for Change


Typically, enzymes are recognized as catalysts as they increase the rate at which reactants bind with one another to conduct a chemical reaction.

A unique trait of enzymes is that while speeding up the process, it remains inchanged. They unite chemical reactants in such a manner that very little amount of energy is needed for the bonds to break down and create new bonds. As a result, they process of creating a product escalates.

They Create Energy


Living beings stock up the energy needed on a daily basis in the state of chemical energy. Typically, adenosine triphosphate (ATP) is the fundamental form of chemical energy. ATP is referred to a fully charged battery that discharges energy to support the enzymatic activities.

Moreover, enzymes are also needed to construct ATP. The fundamental enzyme that creates ATP is known as ATP Synthase. It forms a part of electron transfer chain in a cell’s mitochondria. For each glucose molecule that’s broken down for creating energy, ATP Synthase creates nearly 32-34 adenosine triphosphate molecules.

They are Molecular Machines


Enzymes are often termed as protein machines as they carry out the routine cellular functions. They transport packages to different parts within a cell.

They separate chromosomes while the cell goes through mitosis. They tear cilia to promote movement of cells or to let cells drive the mucus upwards (to the throat). Generally, there are 3 families of motor proteins: myosins, kinesins and dyneins. These catalyze the breakdown of ATP into ADP (adenosine diphoshphate) to collect the energy needed to carry out the grunt work.


They Break Down and Build Up


Typically, cells produce energy by breaking carbon compounds. Some of the common carbon compounds include sugar, proteins etc.

When these compounds are broken down into smaller pieces, the process is known as catabolism. And when new molecules are created from these smaller parts, the process is termed as anabolism. Enzymes carry out these roles at each step of the process.

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