What is post-transcriptional stage of gene regulation?

Post-transcriptional regulation can occur at any stage after transcription, including RNA splicing, nuclear shuttling, and RNA stability. Once RNA is transcribed, it must be processed to create a mature RNA that is ready to be translated. This involves the removal of introns that do not code for protein.

Which of the following is an example of post-translational gene regulation?

Answer: c. The removal of introns and alternative splicing of exons is an example of post-transcriptional control of gene expression.

Can genes be regulated by post-translational control?

Expression of a gene can be controlled at many levels, including transcription, mRNA splicing, mRNA stability, translation and post-translational events such as protein stability and modification.

What is an example of post-translational control?

Proteins may be modified after their synthesis, folding, and assembly – this process is known as post-translational modification. For example, proteins are phosphorylated by enzymes known as protein kinases, while protein phosphotases remove such phosphate groups.

What are post-transcriptional and post-translational process?

Post-transcriptional mechanisms based on alternative splicing and RNA processing, as well as RNA silencing define the actual transcriptome supporting the cold stress response. Post-translational modifications such as ubiquitination and sumoylation regulate the activity of preexisting molecules.

Where does post-translational control take place?

Post-transcriptional control can occur at any stage after transcription, including RNA splicing, nuclear shuttling, and RNA stability. Once RNA is transcribed, it must be processed to create a mature RNA that is ready to be translated. This involves the removal of introns that do not code for protein.

Which of the following is an example of a post transcriptional modification?

These modifications include phosphorylation, glycosylation, ubiquitination, nitrosylation, methylation, acetylation, lipidation and proteolysis and influence almost all aspects of normal cell biology and pathogenesis.

Which of the following is an example of post translational regulation in prokaryotes?

Which of the following is an example of post translational regulation in prokaryotes? Sterically blocking the ribosome.

What is involved 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.

What happens in post-translational control?

What happens during post-translational modification?

Post-translational modification (PTM) refers to the covalent and generally enzymatic modification of proteins following protein biosynthesis. Proteins are synthesized by ribosomes translating mRNA into polypeptide chains, which may then undergo PTM to form the mature protein product.

What are the levels of gene regulation?

There are three main levels of gene regulation. Control of RNA abundance (transcriptional regulation) initiation, elongation, stability. Control of protein synthesis (translational regulation) ribosome binding, rate of translation, termination. Control of protein activity stability, modification, allosteric effects.

What is gene expression and regulation?

Gene expression regulation. Definition. noun. The modulation of any of the stages of gene expression, hence, it encompasses the various systems that control and determine which genes are switched on and off, and when, how long, and to what extent the genes are expressed.

What is transcription in gene regulation?

Gene regulation happens in transcription, translation, or after translation. During transcription, mRNA is produced, which determines the sequence of amino acids in the protein product, the sequence of tRNA and the sequence of rRNA.