Translation, Transcription Storyboard
This is a strip of DNA that will undergo a process called transcription. In this process, DNA is unzipped, and then a single helix shape of mRNA is created.
I'm so excited to get copied into mRNA!
In the process of transcription, the strand of DNA is unzipped and the ladder part of the DNA is copied except for thymine, which is replaced with uracil.
Hello, I am a mRNA strand. Nice to meet you!
DNA alone cannot leave the nucleus of a cell. So mRNA is made to create protein in a separate process called translation.
Now that the transcription phase of making mRNA is done, lets go have a look at how mRNA contributes to creating a protein.
Man, I wish that someday I could leave the nucleus. Its a real bummer that I won't every see that day happen.
Ok, so the second phase of making a protein is called translation. During this phase, a ribosome reads the ladder of the mRNA by every three rungs to create a protein. I'll break it down like this.
The ribosome reads the recipe for a protein, and asks it helpers called tRNA's which will bring the amino acid that the ribosome calls for.
As the ribosome goes through the mRNA, the beginning of the protein will form and it will get bigger, ands bigger until the recipe is cooked to perfection by the ribosome and the protein is made.
When the process is complete, you will get a full protein!
Oops, I almost forgot to talk about mutations and what happens if a protein was made incorrectly. The only way a ribosome can mess up is by an mRNA being made incorrectly, which would result in the ribosome reading the strip incorrectly. An example of an error could be a wrong amino acid in the wrong place, or something like that, meaning the wrong type of mRNA would be made. The result of this would be a defective protein, meaning that the protein wouldn’t be able to do its job correctly. The proper word for all of the events that occurred would be called a mutation, or something went wrong and the protein can’t do whatever its job was. An example of a mutation in a protein would be a person who is lactose intolerant. The protein that is suppose to break down the lactose in milk or dairy doesn’t work properly. Another would be a protein for your immune system that is not working properly. This means that your body would not be able to defeat a certain type disease.
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