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Types of RNA

by Georgina Cornwall, PhD
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    00:01 into the cytosol. I did say there is just one enzyme involved in transcription. However, in the whole process of gene expression, we have a lot of RNAs.

    00:12 First of all, I have introduced you to messenger RNA that carries the message. It is the printout of our recipe from the original blueprint that we got on food network or which ever recipe website you love. Then we have our translational RNAs. We have seen sort of how that work. We will be looking at those in much more detail also. And we have our ribosomal RNAs. Ribosomal RNAs are involved in putting together the ribosomes, so a lot of the ribosome is protein, a lot of it is ribosomal RNA. And then we have small nuclear RNA we will see it come together to make SNRPs that help in some of that posttranscriptional processing that happens to messenger RNA in eukaryotic cells. And then we will see these signal recognition particles that are RNAs. They are small RNA's that are involved in getting the messenger RNA or the protein polypeptide into the endoplasmic reticulum. You will recall that some ribosomes are bound to the endoplasmic reticulum and some of them are floating around freely. The difference being the freely floating ribosomes are making things to stay in the cell whereas the ones bound to the endoplasmic reticulum are making things to go. They need signal recognition particles to help the polypeptide make its way into the endoplasmic reticulum and leave. And later on, we will be introducing some small RNAs like micro RNAs and siRNAs and those will be introduced actually further on in the course when we look at biotechnology and genomics and perhaps a little bit in gene regulation. Lots of different RNAs involved in the process of transcription and translation or gene expression.


    About the Lecture

    The lecture Types of RNA by Georgina Cornwall, PhD is from the course Gene Expression.


    Included Quiz Questions

    1. tRNA
    2. snRNA
    3. mRNA
    4. rRNA
    5. miRNA

    Author of lecture Types of RNA

     Georgina Cornwall, PhD

    Georgina Cornwall, PhD


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