Which of the following statements is correct? A.Capping of mRNAs occurs about 20

Question

Which of the following statements is correct?

A.Capping of mRNAs occurs about 20 nucleotides upstream of a specific sequence in the RNA.

B.Capping of mRNAs involves formation of a 5'-5' triphosphate bridge between the RNA and 7-methylguanosine.

C.Capping of mRNAs occurs about 20 nucleotides downstream of a specific sequence in the RNA.

D.Capping of tRNAs involves the covalent attachment of a 7-methyl guanosine residue.

E.Capping of mRNAs involves formation of a 2'-5' triphosphate bridge between the RNA and 7-methylguanosine.

Explanation / Answer

The statement B is correct.

B. Capping of mRNAs involves formation kf a 5'-5' triphosphate bridge between the RNA and 7-methylguanosine.

Capping is the process tk make a stable and mature mRNA which can undergo translation and synthesie protein.

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