3 Prime Poly-a Tail
3 Prime Poly-a Tail - Related Videos
08:16
Measurement of Poly A Tail Length from Drosophila Larva Brain and Cell Line
0 Views •
2024
The protocol describes an efficient and reliable method for quantifying the poly(A) length of the gene of interest from the Drosophila nervous system, which can be easily adapted to tissues or cell types from other species.
11:24
A 3-D Tail Explant Culture to Study Vertebrate Segmentation in Zebrafish
0 Views •
Cited by 2 •
2021
Here, we present the protocol for 3-D tissue culture of the zebrafish posterior body axis, enabling live study of vertebrate segmentation. This explant model provides control over axis elongation, alteration of morphogen sources, and subcellular resolution tissue-level live imaging.
10:17
The Tail Suspension Test
0 Views •
Cited by 534 •
2012
The tail-suspension test is validated as an experimental procedure to assess antidepressant efficacy of drug treatments in mice. Mice are suspended by their tails for six minutes and escape-related behaviors are assessed. We describe procedures used in conducting the tail suspension test.
03:21
Murine Tail Lymphedema Model: An In Vivo Technique to Generate Sustained Lymphedema in Murine Tail
0 Views •
2025
This video describes an in vivo technique to generate murine tail lymphedema, an abnormal fluid accumulation in the interstitial tissue space leading to swelling in the tail. The model is applied to study mechanisms and therapy for lymphedema.
07:26
Isolation of Genomic DNA from Mouse Tails
0 Views •
Cited by 23 •
2007
FAQs
The pre-mRNA is first cleaved downstream of a polyadenylation signal. Poly(A) polymerase then adds adenine nucleotides to the newly formed 3′ end without using a DNA template. This template-independent step distinguishes tail formation from ordinary DNA-directed synthesis and provides an RNA-processing stage that can be examined in studies of gene expression.
Poly(A)-binding proteins associate with the adenine-rich tail and help determine how the transcript behaves after processing. Their interactions contribute to regulation of RNA stability, nuclear export, and ribosome recruitment. Consequently, the tail is not an isolated sequence feature; its associated proteins help connect RNA processing with later stages of messenger RNA use.
Differences in poly(A) tail length can influence whether a messenger RNA remains stable or undergoes degradation, while interactions with poly(A)-binding proteins affect translation and other post-transcriptional events. Examining tail length therefore helps researchers relate RNA structure to functional outcomes, including persistence in the cell and recruitment of ribosomes for protein production.
The modification provides a regulatory point after transcription has produced the RNA. Through tail length and protein interactions, it can affect stability, degradation, nuclear export, and translation. This makes polyadenylation relevant to post-transcriptional regulation, where gene-expression outcomes are shaped by how RNA is processed and handled rather than only by DNA sequence.
A study can follow the sequence from pre-mRNA cleavage downstream of the polyadenylation signal to addition of adenine nucleotides by poly(A) polymerase, followed by association of poly(A)-binding proteins. Researchers can then relate these stages to tail length, RNA stability, degradation, nuclear export, or ribosome recruitment, depending on the biological question.
Polyadenylation is relevant when researchers investigate RNA purification, gene-expression regulation, or synthetic messenger RNA. In these settings, the tail provides a feature connected to RNA stability, processing, and translation. Studying how its length and protein interactions affect transcript behavior can support analysis of engineered RNA and research or therapeutic applications involving synthetic mRNA.