One form of posttranscriptional modification of most eukaryotic RNA transcripts is the addition of a poly-A sequence at the 3' end. The absence of a poly-A sequence leads to rapid degradation of the transcript. Poly-A sequences of various lengths are also added to many prokaryotic RNA transcripts where, instead of promoting stability, they enhance degradation. In both cases, RNA secondary structures, stabilizing proteins, or degrading enzymes interact with poly-A sequences.
Considering the activities of RNAs, what might be the general functions of 3-polyadenylation? Check all that apply.
A. regulation of mRNA association with cellular components, like proteins, lipids, or nucleic acids
B. regulation of mRNA splicing
C. regulation of mRNA transport to the cytoplasm
D. regulation of mRNA proofreading
E. regulation of mRNA longevity
F. regulation of introns' length
Solved
Show answers
More tips
Answers on questions: Biology
- M Mathematics Please help meee I WILL GIVE YOU BRAINLIEST...
- M Mathematics I neeed the answers to these two please explain...
- S Spanish ¿tú (patinar) mucho en la primavera? Ud. no (trabajar) en San Francisco, ¿verdad? La profesora Uribe (enseñar) la clase de ciencias. Tú y Carolina (necesitar) cuadernos de argollas...
Ответ:
Explanation:
Most of mature eukaryotic mRNA have 50-250 adenine residue at the 3'end, called Poly A tailThese nucleotides are not encoded by the genome but are added after transcription, process called is both template and primer independent process catalysed by polyadenylate polymerase (PAP)PAP uses ATP as a precursor and adds the nucleotides using same chemistry as RNA PolymerasePrimary function of Poly A tail is to protect mRNA from exonuclease at 3' end It also helps in export of mature mRNA from the nucleus to the cytoplasmServes as recognition signal for translation factors during translation initiationОтвет:
Explanation:
Hindi ko maintindihan ang wika mo