Fig.1 shows the structure of catalase



What are proteins?

Large molecules that are composed of polymers of amino acids that are linked together due to the presence of peptide bonds are called proteins. This is a macromolecule that differs from carbohydrates and lipids due to the presence of the nitrogen element. Excited yet?

What about ‘Protein structure’?

The following video has been very helpful for my lecture on this topic. You may find so as well. The four different levels of proteins are discussed and examples are given which I found easier to visualize. Who wouldn’t like that? Its times like these I love videos on my work. Want to know about primary, secondary, tertiary and quaternary structure sit back and have a look. 🙂 Be on the lookout.



Wow!!!!! Who would have thought proteins were this complex??

Think I’m lying?? I dare you to go find out yourself and I’m sure this will be you…




Functions you ask?

Proteins can perform a wide variety of tasks that ensure the healthy functioning of our bodily systems. Yes, they are very important as they virtually function in all of our body cells! Such functions are as follows:

  • As antibodies which help the body to fight against diseases.
  • For repair and maintenance of cells and tissues.
  • As enzymes which speed up the cellular reactions taking place in the body.
  • As hormones which send and receive messages in the blood. E.g. insulin and oxytocin.
  • For contractility as some proteins are responsible for movement e.g. actin or myosin.
  • For structure as fibrous proteins provide support. E.g. collagen or keratin.
  • For transport of substances in and out of the cell and through the blood. E.g. carrier proteins and haemoglobin.

Need to hear it for yourself? This video may do just that for you. Who knew you could find so many things on proteins. Be on the lookout.

Proteins build muscles!!!!!!!!!!!!!!


Fig2: Building muscle

Denaturing proteins…


Fig3: denaturation.

Yes! L Proteins can be destroyed…

Denaturation of proteins entails upsetting and destroying both the secondary and tertiary structures of proteins. (Ophardt 2003) The following can destroy protein structures:

1)       Heat- increased vibrations and translations break hydrogen bonds.

2)       UV Radiation- similar to heat.

3)       Strong acids or bases- salt formation disturbs hydrogen bonds.

4)       Urea- great demand to form hydrogen bonds.

5)       Some organic solvents-ionic groups present in the proteins is changed. I.e. the ionic groups become hydrolysed.

6)       Agitation- the hydrogen bonds are cut off and this disrupts the conformation of the protein. (Matthew 2012)



The act of developing pure muscle mass has become a norm. I have wondered over time, how do they get so big? Apart from the training diet is utterly imperative. That is where protein intake comes to play. ‘Functional proteins such as motor proteins which include myosin, kinesin, and dynein generate the forces exerted by contracting muscles’, says ironman magazine.25-30% of protein per total calorie intake to further their goal of maintaining and improving their body composition. These facts are beyond me so I urge you if interested to check out more. You would be surprised.








Bailey, Regina. 2014. “Protein Function.” Accessed February 15, 2014.http://biology.about.com/od/molecularbiology/a/aa101904a.htm

Matthew, Jason. 2012. “Amino acids and proteins pt. 2.mov.” Accessed February 15, 2014. http://www.youtube.com/watch?v=ZWLNkEJloJA&feature=youtu.be

Ophardt, Charles E. 2003. Virtual Chembook El mhurst College. Accessed February 15, 2014. http://www.elmhurst.edu/~chm/vchembook/568denaturation.html

 What is bodybuilding? Accessed February 16 2014


TEA Biotechnology Podcast 1.7, Protein structure. Accessed February 16.


What do proteins do?












Random thoughts

I thought i would share a little on the day I had today. It was an interesting day some surprises that I was quite pleased about. I had a pretty bad weekend so i decided to let that go today and focus on being Cherome. At times though I wonder how can we get through these weeks on campus with as little stress as possible? Can anyone help me with that? Anyway just felt like venting. Much love 🙂


Now we have seen that Amino acids vary but let’s take a look at those that are necessary and that which are not so much. Essential versus non-essential amino acids.



Fig.2: Essential and Non-essential Amino Acids.

Did you know that amino acid ends are affected by pH and this is one reason why enzymes work best at an optimum pH.

In thinking about amino acids we came across an interesting topic of amino acid disease and you would not believe the various types there are. I was like WOW and the names were quite creative.



Take a look at this one for example. Maple syrup urine disease.

This is one unique disease that is caused by the bodies’ inability to process certain amino acids well enough. This bad boy is an inherited case as well. Now maybe it’s time you do a little background search on your parents. But I didn’t say go do it. Beginning at a very young and tender age it can be pointed out by factors such as:

  • Poor feeding habits
  • Lack of energy
  • Slow development
  • Vomiting

Why do these innocent kids have to suffer!!!!!




For more info take a look you might be interested…







Done by: Cherome.