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Related Concept Videos

Tagging and Fusion Proteins01:24

Tagging and Fusion Proteins

Proteins are involved in several cellular processes and biochemical reactions. Analyzing a specific protein of interest requires it to be isolated from the other proteins in the cell. This is achieved by overexpressing the specific gene in a suitable host to produce large quantities of the target protein. A tag or label is recombined with the gene to produce a fusion protein containing the target protein and the tag. The tags on these fusion proteins can then be used for easy detection and...
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...
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...
Exon Recombination02:32

Exon Recombination

The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes. 
Exon shuffling follows “splice frame rules.” Each exon has three reading...
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...

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Related Experiment Video

Updated: Jun 13, 2026

Synthesis of an Intein-mediated Artificial Protein Hydrogel
15:06

Synthesis of an Intein-mediated Artificial Protein Hydrogel

Published on: January 27, 2014

Recent developments in intein-mediated protein splicing and their applications in bioengineering.

Zahra Rashidi Ghalamkhan1, Safar Farajnia2, Aydin Seirafi3

  • 1Tabriz University of Medical Sciences Faculty of Advanced Medical Sciences Tabriz Iran.

Current Protein & Peptide Science
|June 12, 2026
PubMed
Summary

Inteins are protein elements that splice themselves out, joining other proteins. Advances in intein engineering enhance their use as molecular tools in biotechnology and medicine.

Keywords:
Gene TherapyInteinsProtein EngineeringProtein PurificationSelf- Splicing

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Last Updated: Jun 13, 2026

Synthesis of an Intein-mediated Artificial Protein Hydrogel
15:06

Synthesis of an Intein-mediated Artificial Protein Hydrogel

Published on: January 27, 2014

Using the E1A Minigene Tool to Study mRNA Splicing Changes
10:25

Using the E1A Minigene Tool to Study mRNA Splicing Changes

Published on: April 22, 2021

Area of Science:

  • Protein biochemistry
  • Molecular biology
  • Biotechnology

Background:

  • Inteins are protein subsequences that catalyze their own excision and ligation of flanking exteins.
  • They function without external cofactors or energy, offering unique catalytic mechanisms and structural diversity.
  • Recent engineering efforts have improved intein efficiency, control, and substrate tolerance.

Purpose of the Study:

  • To provide a comprehensive overview of intein biology, classification, and mechanisms.
  • To discuss recent advancements in biotechnological and biomedical applications of inteins.
  • To highlight challenges and emerging opportunities in intein engineering and application discovery.

Main Methods:

  • Review of existing literature on intein biology and applications.
  • Analysis of mechanistic insights into cis- and trans-splicing inteins.
  • Discussion of engineering strategies and computational design approaches.

Main Results:

  • Inteins serve as versatile molecular tools with applications in protein engineering, drug targeting, biosensing, and gene editing.
  • Conditional inteins enable precise control over protein function in synthetic biology and biomedicine.
  • Progress has been made in overcoming challenges like incomplete splicing and extein compatibility.

Conclusions:

  • Inteins possess unique features like high fidelity and orthogonal activity, making them valuable in diverse life science fields.
  • Emerging opportunities include AI-driven engineering and integration with high-throughput screening.
  • Inteins hold transformative potential for therapeutic innovation and biotechnology.