Which of the following are involved in post-transcriptional control?

Which of the following are involved in post-transcriptional control?

Which of the following are involved in post-transcriptional control? Answer d. All of the above (control of RNA splicing, RNA shuttling, and RNA stability) are involved in post-transcriptional control.

What is involved in post-transcriptional regulation?

Posttranscriptional regulation includes alternative splicing (which determines the translated mRNA sequence itself), stability of the mRNA strand (which can be actively degraded in a regulated manner), transport of the mRNA to the ribosome, and binding of mRNA to the ribosome.

What are three post-transcriptional processes?

In this section, we will discuss the three processes that make up these post- transcriptional modifications: 5′ capping, addition of the poly A tail, and splicing.

What happens in post translational control?

Post-translational control can be defined as the mechanisms by which protein structure can be altered after translation. Alternatively, the sequence or number of the amino acids in a protein can be altered. These changes can alter the structure or function of the protein, or they can target it for destruction.

Which of the following are involved in post transcriptional control group of answer choices?

Which of the following are involved in post-transcriptional control? Answer d. All of the above (control of RNA splicing, RNA shuttling, and RNA stability) are involved in post-transcriptional control. Binding of an RNA binding protein will ________ the stability of the RNA molecule.

Where does post transcriptional modification occur?

RNA Transport from the Nucleus to the Cytoplasm Post-transcriptional modifications of pre-mRNA, such as capping, splicing, and polyadenylation, take place in the nucleus. After these modifications have been completed, the mature mRNA molecules have to be translocated into the cytoplasm, where protein synthesis occurs.

What are some examples of post translational regulation?

Such post-translational modifications are generally reversible, one enzyme adds the modifying group and another can remove it. For example, proteins are phosphorylated by enzymes known as protein kinases, while protein phosphotases remove such phosphate groups.

Where do post-transcriptional modifications occur?

Post-transcriptional modifications of pre-mRNA, such as capping, splicing, and polyadenylation, take place in the nucleus. After these modifications have been completed, the mature mRNA molecules have to be translocated into the cytoplasm, where protein synthesis occurs.

How are miRNAs involved in post transcriptional control?

Answer d. All of the above (control of RNA splicing, RNA shuttling, and RNA stability) are involved in post-transcriptional control. Binding of a miRNAs will ________ the stability of the RNA molecule. Answer b. Binding of a miRNAs will decrease the stability of the RNA molecule.

Which is the first stage of post transcriptional control?

RNA splicing, the first stage of post-transcriptional control. In eukaryotic cells, the RNA transcript often contains regions, called introns, that are removed prior to translation. The regions of RNA that code for protein are called exons (Figure 1).

How does post translational control of gene expression work?

In Summary: Post-Translational Control of Gene Expression. The RNA stability can be increased, leading to longer residency time in the cytoplasm, or decreased, leading to shortened time and less protein synthesis. RNA stability is controlled by RNA-binding proteins (RPBs) and microRNAs (miRNAs).

What happens after RNA is transcribed into a protein?

This processing after an RNA molecule has been transcribed, but before it is translated into a protein, is called post-transcriptional modification. As with the epigenetic and transcriptional stages of processing, this post-transcriptional step can also be regulated to control gene expression in the cell.