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Related Concept Videos

RNA Splicing01:32

RNA Splicing

Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
RNA Splicing01:32

RNA Splicing

Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
Pre-mRNA Processing: RNA Splicing01:32

Pre-mRNA Processing: RNA Splicing

Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
Alternative RNA Splicing02:18

Alternative RNA Splicing

Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
Alternative RNA Splicing02:18

Alternative RNA Splicing

Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
Pre-mRNA Processing: Modification of pre-mRNA Ends01:35

Pre-mRNA Processing: Modification of pre-mRNA Ends

In eukaryotic cells, transcripts made by RNA polymerase are modified and processed before exiting the nucleus. Unprocessed RNA is called precursor mRNA or pre-mRNA to distinguish it from mature mRNA.
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a cap to the 5' end of the growing transcript. In this process, a 5' phosphate is replaced by modified guanosine that has a methyl group attached (7-methyl guanosine). This 5' cap helps the cell...

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Related Experiment Video

Updated: Jun 18, 2026

ACT1-CUP1 Assays Determine the Substrate-Specific Sensitivities of Spliceosomal Mutants in Budding Yeast
07:31

ACT1-CUP1 Assays Determine the Substrate-Specific Sensitivities of Spliceosomal Mutants in Budding Yeast

Published on: June 30, 2022

Entropic contributions to the splicing process.

Matteo Osella1, Michele Caselle

  • 1Dipartimento di Fisica Teorica and INFN, Università degli Studi di Torino, v. Pietro Giuria 1, 10125 Torino, Italy. mosella@to.infn.it

Physical Biology
|November 26, 2009
PubMed
Summary
This summary is machine-generated.

Depletion attraction, driven by entropy effects, influences splicing by explaining intron length

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Last Updated: Jun 18, 2026

ACT1-CUP1 Assays Determine the Substrate-Specific Sensitivities of Spliceosomal Mutants in Budding Yeast
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Published on: June 30, 2022

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Using the E1A Minigene Tool to Study mRNA Splicing Changes
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Area of Science:

  • Biophysics
  • Molecular Biology
  • Genomics

Background:

  • Depletion attraction is increasingly recognized for its role in cellular organization.
  • This includes organizing transcriptional activity and forming nuclear bodies.

Purpose of the Study:

  • To explore the role of depletion attraction in the eukaryotic messenger RNA (mRNA) splicing process.
  • To investigate how entropy effects and depletion attraction influence splice-site recognition based on intron length.

Main Methods:

  • Theoretical modeling of entropic forces and depletion effects.
  • Analysis of the relationship between intron length and splice-site selection mechanisms.

Main Results:

  • Depletion attraction provides a mechanism to explain the significance of non-specific intron length in splice-site recognition.
  • The model offers evolutionary insights into the genome architecture of higher eukaryotes.

Conclusions:

  • Entropy-driven depletion attraction is a key factor in mRNA splicing regulation.
  • This model contributes to understanding genome organization and evolution in eukaryotes.