The 5′-terminal cap structure of eukaryotic mRNAs is a(n): 7-methylguanosine joined to the mRNA via a 5′ -> 5′ triphosphate linkage.
Here’s a breakdown of the key components:
7-methylguanosine: This is a modified guanine nucleotide with a methyl group attached at the 7th position.
5′ -> 5′ triphosphate linkage: This is an unusual linkage that connects the 7-methylguanosine to the first nucleotide of the mRNA molecule. It’s different from the typical phosphodiester linkage used throughout the rest of the mRNA chain.
The 5′-terminal cap structure of eukaryotic mRNAs is a(n): 7-methylguanosine joined to the mRNA via a 5′ -> 5′ triphosphate linkage.
Here’s a breakdown of the key components: