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Life Sciences => Cells, Microbes & Viruses => Topic started by: scientizscht on 16/06/2019 20:34:25

Title: How do aminoacids connect to the appropriate tRNAs? What do ribosomes do?
Post by: scientizscht on 16/06/2019 20:34:25

What is the ribosome actually do? I know it rolls across an mRNA but what is its function?

How do aminoacids connect to the appropriate tRNAs?

Thanks!

Title: Re: How do aminoacids connect to the appropriate tRNAs? What do ribosomes do?
Post by: evan_au on 16/06/2019 22:09:09

You could start here:
https://en.wikipedia.org/wiki/Transfer_RNA
https://en.wikipedia.org/wiki/Ribosome

If a picture is worth a thousand words, a moving picture is worth a million words:

Title: Re: How do aminoacids connect to the appropriate tRNAs? What do ribosomes do?
Post by: scientizscht on 17/06/2019 08:26:49

Thanks I have read the Wikipedia articles already but can't find the answer to my questions.

I will watch the video later but I don't think it will have the information I need.

As for the ribosome I want to know which particular reaction it catalyses.

As for tRNA, how they bind the specific amino acid.

Title: Re: How do aminoacids connect to the appropriate tRNAs? What do ribosomes do?
Post by: evan_au on 17/06/2019 10:10:43

This one might help...

There is a family of separate enzymes (each as complex as t-RNA) which ensures that exactly the right amino acid gets attached to the right t-RNA.

Humans use 20 amino acids, so there are 20 of these enzymes, see:
https://en.wikipedia.org/wiki/Aminoacyl_tRNA_synthetase

Title: Re: How do aminoacids connect to the appropriate tRNAs? What do ribosomes do?
Post by: scientizscht on 18/06/2019 08:37:07

That's what I needed thanks.

As for the ribosome? Does it catalyse the binding of tRNAs to mRNAs? The formation of peptide bonds? Anything else?
What is its exact role?