What is meant by polycistronic mRNA?
Polycistronic mRNA is a mRNA that encodes several proteins and is characteristic of many bacterial and chloroplast mRNAs. Polycistronic mRNAs consist of a leader sequence which precedes the first gene. The gene is followed by an intercistronic region and then another gene.
How is polycistronic mRNA translation?
One key characteristic of prokaryotic mRNAs is that they can be polycistronic. A polycistronic mRNA contains two or more cistrons, each of which can be translated to an individual protein independently. Consequently, more than one protein can be produced from the same polycistronic mRNA.
How is polycistronic mRNA formed?
In prokaryotes, genes which encode proteins with relationships in a metabolic pathway form Operons – which produce polycistronic mRNA’s. An operon is in bacterial DNA, a cluster of contiguous genes transcribed from one promoter that gives rise to a polycistronic mRNA.
What is polycistronic mRNA Mcq?
Polycistronic mRNA molecule carries the coding region for several proteins and thus, is transcribed from more than one genes. These proteins function together in a biological process. They are present in bacteria. But monocistronic mRNA molecule encodes a single protein and thus, is transcribed from one gene.
What is polycistronic mRNA quizlet?
Polycistronic mRNA refers to a messenger RNA which encodes two or more proteins. Polycistronic messenger RNAs participates in the process of protein synthesis (translation) in prokaryotes.
What does polycistronic vs Monocistronic mean?
The monocistronic transcription unit contains a structural gene coding for only one polypeptide (mostly in eukaryotic cells), whereas the polycistronic transcription unit contains structural genes coding for more than one polypeptides (mostly in prokaryotic cells).
What is polycistronic and Monocistronic?
What is Monocistronic and polycistronic?
What is meant by polycistronic mRNA give an example quizlet?
euchromatin. What is meant by polycistronic mRNA? Give an example. It is a messenger RNA polymer that carries the code for more than one polypeptide chain; lactose and tryptophan operons would be examples.)
What is the difference between Monocistronic and polycistronic mRNA and what kind of cells do they describe?
The main difference between monocistronic and polycistronic mRNA is that the monocistronic mRNA produces a single protein while polycistronic mRNA produces several proteins that are functionally-related. Furthermore, eukaryotes have monocistronic mRNA while prokaryotes have polycistronic mRNA.