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FUNCTIONS OF PROTEINS IN THE BODY

Updated on April 27, 2011
 

FUNCTIONS OF PROTEIN IN THE BODY

Protein is the fundamental life force. Proteins are necessary in initiating every biochemical process in the body as well as in providing us an invaluable source of energy. In the absence of protein, the body would simply shut down.

PROTEIN AS ENZYMES

Proteins are responsible for almost every chemical reaction that takes place in the body. These reactions are facilitated by enzymes, which are actually protein catalysts that increase the rate of reaction without themselves being changed in the process.

The amount of enzymes present in the body determines the rate at which a chemical event can occur. Thus if there is deficiency in enzymes, there will be a slower reaction.

Several thousand enzymes have been discovered to date and virtually every one is a protein.

TRANSPORTATION AND STORAGE

Proteins have a unique ability to transport substances across cell membranes that other molecules can't penetrate. Hemoglobin is a type of protein that is responsible for carrying oxygen in red blood cell. Myoglobin is responsible for carrying oxygen. Ferritin is a protein that assist in the storage of iron and stores blood in the liver. Without protein for transportation and storage, we would not have blood to nourish our bodies.

CELL AND TISSUE GROWTH

Continuous supply of amino acids needed by the body in order to build the proteins that create tissue. Throughout our everyday lives, we constantly manufacture new tissues such as hair, teeth, skin and nails. The blood cells and skin cells last about a month while the cells situated in our digestive system lining last only two weeks. When the cells die and slough off, our bodies need new healthy tissue to replace them. It is only through the regeneration of new tissue that we can become healthy again.

MECHANICAL SUPPORT

Collagen, the most abundant protein found in the human body is a type of structural protein that is fibrous in nature. Collagen is responsible for giving strength and support to tissues such as skin and bone that undergo continual wear and tear.

Athletes that work out two or more hours a day rely on the body' s ability to manufacture new collagen, which keeps their joints healthy and strong and prevents injury.

COORDINATION AND MOTION

Do you know that without protein we could not create life ?

Proteins are a major component in muscle contraction. Muscle contraction occurs when two fibrous protein filament glide across each other. On a smaller scale, sperms are propelled in motion by their flagella, which are made up of contractile units made of protein. Thus protein is mainly behind the movement of sperm.

IMMUNE PROTECTION

Antibodies are highly specific proteins that are responsible for detecting a foreign substance or known as "antigen". The body produces a specific antibody to respond to an antigen and inactivate it.

NERVE GENERATION AND IMPULSES

The nervous system is responsible for keeping the body in balance. When a certain stimulus triggers the nervous system, it responds with an appropriate reaction. This cannot occur without a receptor site awaiting the stimulus. These receptor sites are made of protein complexes and are responsible for transmitting nerve messages from cell to cell.

FLUID BALANCE

Prrotein have the unique ability to regulate the amount of fluid within a cell. The amount of protein within a cell will determine the cell's water content, as water is attracted to protein. When protein levels are low, fluid imbalances result. This type of system is important to prevent dehydration , as well as to enhance muscle and nerve cell function.

SOURCES OF PROTEIN

"Amino acids" is the name given to the basic structural unit of proteins. Nitrogen molecules are combined wit hydrogen molecules to make what is called an amino group.

Each amino acid has a carboxyl group which is madeup of carbon, oxygen and hydrogen. To date, more tan 300 amino acids have been described in nature. Out of this 300, only 20 are commonly found in mammals.

Foods high in protein are complete proteins in that they have sufficient quantity and variation of all twenty amino acids, Examples of complete proteins are animal-based foods such as fish, poultry, beef, pork. Eggs and dairy products also have ufficient amino acid composition and are considered complete.

SOURCE : USER's GUIDE TO PROTEIN AND AMINO ACIDS

Written by KERI MARSHALL

Published by: BASIC HEALTH PUBLICATIONS

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    • rodney southern profile image

      rodney southern 9 years ago from Greensboro, NC

      Great job on this! Very enjoyable and informative hub.

    • cristina327 profile image
      Author

      cristina327 9 years ago from Manila

      Thanks Rodney for appreciating this hub.

    • ahmu profile image

      ahmu 9 years ago

      great hub u make cristina i like it

    • cristina327 profile image
      Author

      cristina327 9 years ago from Manila

      Thank you ahmu for appreciating this hub.

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      willkho 9 years ago

      Great information about protein. Thanks for sharing.

      May God continues to bless your ministry.

    • cristina327 profile image
      Author

      cristina327 9 years ago from Manila

      Thank you willkho. God bless you too. Best regards.

    • Rob Jundt profile image

      Rob Jundt 9 years ago from Midwest USA

      Excellent hub. Isn't it amazing how all this complexity happened by "chance." Nice work.

    • RGraf profile image

      Rebecca Graf 8 years ago from Wisconsin

      Very great hub. Good info.

    • profile image

      achu 8 years ago

      proteins are very useful to our body

    • profile image

      ...a...l...i...d 7 years ago

      great!big help for homeworks and researches

    • sheryld30 profile image

      sheryld30 7 years ago from California

      Found to be very helpful, as well, as interesting. Thank you! :)

    • profile image

      tlautner15 7 years ago

      thank you so much for thus hub, it helped me with a project for school that i had to do quickly.

    • profile image

      tarus kenya 6 years ago

      Thanks a lot that is wonderful,have learn a lot. God bless!

    • profile image

      anthony 6 years ago

      Great work done,it is well explained. thsnks.

    • vocalcoach profile image

      Audrey Hunt 6 years ago from Nashville Tn.

      Well, I certainly have learned a lot about protein in your excellent hub. Everyone should read this! Wonderful hub - well-written and informative. Blessings, dear one. :)vocalcoach

    • cristina327 profile image
      Author

      cristina327 6 years ago from Manila

      Thanks vocalcoack for appreciating this hub. YOur comment is a great source of encouragement to me. Blessings and regards.

    • drpastorcarlotta profile image

      Pastor Dr. Carlotta Boles 6 years ago from BREAKOUT MINISTRIES, INC. KC

      WOW!! Very informational! Thank you! Voted-UP!!

    • cristina327 profile image
      Author

      cristina327 6 years ago from Manila

      Hi drpastorcarlotta it is great to hear from you. Thank you for dropping by and appreciating this hub. Remain blessed always and best regards.

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      Elizabeth Esi Crentsil 6 years ago

      its really great i admire u but explain it better my kids don't understand

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      imran javed 5 years ago

      good job seriously very informative

    • profile image

      liah 5 years ago

      i have a biology homework and this helped a lot....graet info

    • profile image

      Renice 5 years ago

      hi hub it was very informative.it helped me a lot with my foods assignment.thnx

    • profile image

      pamela benjamin 5 years ago

      this is a good work. Keep it up!

    • profile image

      Asana 5 years ago

      Very interesting and educative. It will help me to deliever my lecturer with pride.

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      Durgesh chaudhry 5 years ago

      i like this enzyme information

    • profile image

      Brenie nyuruka 5 years ago

      Thanks for the information it was so helpful "kudzidza hakuperi"

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      Edward Mazyopa 5 years ago

      This information is timely as it will help in my end of year exams due in two weeks, thank you so much and keep it on

    • toknowinfo profile image

      toknowinfo 4 years ago

      Thank you for this very informative hub. I learned a lot and appreciate you putting this together.

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      Dr. Atiya 4 years ago

      thnku Hub i got very well info about proteins

    • profile image

      nabila princes 4 years ago

      yes that's good

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