Respuesta :
The poly-A tail makes the RNA molecule more stable and prevents its degradation. Additionally, the poly-A tail allows the mature messenger RNA molecule to be exported from the nucleus and translated into a protein by ribosomes in the cytoplasm.
A poly(A) tail is added to an RNA transcript, usually a messenger RNA, during polyadenylation (mRNA). The poly(A) tail is a section of RNA that solely comprises adenine bases and is made up of many adenosine monophosphates. Polyadenylation is a step in the process that eukaryotes use to create mature mRNA for translation.
The poly(A) tail promotes mRNA breakdown in several bacteria. As a result, it contributes to the whole process of gene expression. When a gene's transcription stops, the polyadenylation process starts. A group of proteins first cleave the 3′-most section of the freshly synthesised pre-mRNA; after that, the proteins create the poly(A) tail at the RNA's 3′ end.
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