Question

What are the functions of (i) methylated guanosine cap (ii) poly ""A"" tail in a matured RNA.

Answer 1

Answer:

Functions of Methylated Guanosine Cap:

Attachment of mRNA :Attachment of mRNA to smaller ribosomal subunit during initiation of translation.

Function of poly A tail:

Protection of translational region. Tail length and longetivity of mRNA are also positively correlated.

Answer 2

Answer:

Functions of addition of poly A tail in mature mRNA are: 1) It protects the mRNA from enzymatic degradation in cytoplasm. 2) It helps in transcription termination and translation. 3) It helps in transfer of mRNA from nucleus to cytoplasm.