Describe the ways messenger RNA is post transcriptionally processed. What are the significance of these events?

Describe the ways messenger RNA is post transcriptionally processed. What are the significance of these events?

Expert Solution

Answer=

the ways messenger RNA is post transcriptionally processed are as follows:

1] 5' Cap -Both ends of a pre-mRNA are modified by the addition of chemical groups.The group at the beginning i.e.5' end is called as cap.

The 5'cap is added to the first nucleotide in the transcript during transcription.The cap is a modified guanine G nucleotide,

significance- It protects the transcript from being broken down.

also helps the ribosome attach to the mRNA and start reading it to make a protein.

2]Poly A tail= The polyadenylation is the addition of a poly A tail to a mRNA.

The poly A tail consists of multiple adenosine monophosphates ,it is a stretch of RNA that has only adenine bases.

This process begins as the transcription of a gene terminates.

significance- The poly A tail is important for nuclear export,translation and stability of mRNA.

It protects the mRNA molecule from enzymatic degradation in the cytoplasm and aids in transcriptional termination,export of mRNA from the nucleus and translation.

3]RNA splicing- In this splicing ,specific parts of the pre-mRNA ,called introns are recognized and removedby a protein-and -RNA complex called the spliciosomes.Introns can be viewed as junk sequences .

The xons are pieces of RNA that are pasted together by the spliceosome to make final ,mature mRNA .

4]Alternative splicing - More than one mRNA can be made from the same gene.

Through alternative splicing ,we can encode more different proteins than we have genes in our DNA.

gladiator answered 2 years ago

How is messenger RNA made and processed to mature RNA. List all the steps

After the synthesis of RNA from DNA via transcription, RNA is processed in a number of...

After the synthesis of RNA from DNA via transcription, RNA is processed in a number of ways before it is released from the nucleus. What are the steps to RNA processing?

Describe two ways an RNA virus can induce oncogenesis

[____________________________] regulation (control) determines how the primary RNA transcript is spliced or otherwise processed

Describe two ways in which proteins with RNA Recognition Motifs recognize their corresponding RNAs.

describe the structure and events associated with human oogenesis and indicate the ways in which it...

describe the structure and events associated with human oogenesis and indicate the ways in which it is significantly different from spermatogenesis?

Describe several ways in which post-transcriptional regulation can occur

6. RNA _________ is post-transcriptional alteration of sequences in mRNAs. 10. RNA splicing involves two ...

6. RNA ___________________ is post-transcriptional alteration of sequences in mRNAs. 10. RNA splicing involves two __________ reactions? 14. Peptide bond formation in translation occurs by an _______________catalyzed reaction 17. The protein kinase Raf phosphorylates the protein kinase _______, which then phosphorylates (on both threonine and tyrosine residues) ______________________________. 18. Expression of the immediate early genes triggers the expression of a battery of other downstream genes called ________________________________________________.

Describe two ways DNA is different than RNA. Name two roles that hydrogen bonds play in...

Describe two ways DNA is different than RNA. Name two roles that hydrogen bonds play in DNA? What is the difference between 10 nm fiber, 30 nm fiber and the DNA loops? Describe histones. What are they made of (ie the types of subunits). How do they interact with DNA?

What role does interference RNA play in post-transcriptional and translation control of gene expression?

Question