Which is central to the addition of the 7-methylguanosine cap to mRNA?
A) RNA polymerase 1
B) guanine-N7 methyltransferase
C) GMP
D) snoRNA

Question

Quizplus · Accepted Answer

The addition of the 7-methylguanosine cap to mRNA is catalyzed by the enzyme guanine-N7 methyltransferase, which adds a methyl group to the nitrogen at position 7 of the guanine base. This modification is important for mRNA stability, processing, and translation initiation. It is not catalyzed by RNA polymerase 1, which is responsible for transcribing rRNA genes, nor is it directly related to GMP or snoRNA.

Which Is Central to the Addition of the 7-Methylguanosine Cap