How can v stop transcription to take place when it has already reached translation stage?

Question

transcription is transfer of info. from dna to rna/// In translation mRNA is decoded to produce a specific polypeptide##and translation is necessarily preceded by transcription///m sure abt all this'''but how do we stop protein synthesis (translation) from mRNA(produced as a result of transcription)

transcription n translation can be called as protein biosynthesis//so they r like 2 stages of protein synthesis^^^

Answer 1

The use of drugs to stop translation is a non-physiological way.
Cells have mechanisms of regulating translation. E.g. you can have binding of proteins on the mRNA, inhibiting the binding of the ribosomes. These proteins are released when there is a proper stimulus and translation can occur.

For example the mRNA for ferritin (involved in iron storage) has the protein aconitase bound to it under conditions of iron starvation, thus no ferritin is produced and the iron in the cell is used for its needs instead of being stored. When there is an excess of iron, iron ions bind to aconitase forcing it to release the mRNA of ferritin, translation occurs and thus the cell can store iron with ferritin.

Answer 2

Transcription and translation are two separate processes, so translation is not a "stage" of transcription. In procaryotes ribosomes attach to the new mRNA while it is still being synthesized (transcribed), but still, these are 2 processes. You can stop the transcription by specific inhibitors - the best known being actinomycin-D.

Answer 3

In prokaryotes, translation is taking place , and at the same time transcription is taking place, but in eukaryoutes, their is a splicing mechanism caused by the existence of the nucleus, where the introns are removed and only exons are left, so this mecanism : splicing (posttranscription) is the answer for your question..

Answer 4

mRNA can prevent protein production by interference. In some cases the mRNA can effectively inactivate other mRNAs by binding to them or binding to protein complexes which down regulate the production of that mRNA. This negative feedback mechanism is used to prevent the overproduction of certain proteins.

Answer 5

some genes are self-regulating.

take the lac operon, for instance.
http://web.mit.edu/esgbio/www/pge/lac.html

Answer 6

dont understand your question