What is polycistronic transcription?

What is polycistronic transcription?

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.

What is meant by polycistronic gene?

The term polycistronic is used to describe an mRNA corresponding to multiple genes whose expression is also controlled by a single promoter and a single terminator. Polycistronic mRNAs are also called operons. All eukaryotic mRNAs are monocistronic.

Is prokaryotic transcription polycistronic?

Prokaryotic transcription often covers more than one gene and produces polycistronic mRNAs that specify more than one protein.

What is the advantage of Polycistronic mRNA?

In bacteria, gene expression is structured in operons containing polycistronic mRNAs encoding multiple proteins. This has the clear advantage that expression of several proteins can be regulated synchronously using a single promoter and terminator.

What are the benefits of polycistronic mRNA to bacterial cells?

What are the benefits of polycistronic mRNA to bacterial cells? All of the proteins for a single enzymatic pathway will be coordinately available. Polycistronic mRNA is shorter than monocistronic mRNA. Polycistronic mRNA undergoes pre-mRNA processing.

What is Polycistronic DNA Class 12?

mRNA carrying genetic information of many genes for synthesis of protein molecules is called polycistronic mRNA.

What is the advantage of polycistronic mRNA?

What is a Polycistronic message are they found in prokaryotes or eukaryotes?

Polycistronic mRNA is mRNA that codes for multiple different protein products. Generally, Polycistronic mRNA is found in prokaryotes. For example, if a bacterial cell wants to use lactose as an energy source it will transcribe an mRNA molecule that encodes for multiple protein products necessary for lactose metabolism.

What is the benefit to a polycistronic arrangement?

What are the benefits of polycistronic mRNA to bacterial cells? Select all of the correct answers….

1	Polycistronic mRNA undergoes pre-mRNA processing.
3	Polycistronic mRNA is shorter than monocistronic mRNA.