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Protein-splicing intein: Genetic mobility, origin, and evolution.

X Q Liu1

  • 1Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4H7, Canada. pxqliu@is.dal.ca

Annual Review of Genetics
|November 28, 2000
PubMed
Summary
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Inteins are protein elements that splice themselves out of host proteins. Their structure and function are key to understanding their evolution and novel applications like split inteins.

Area of Science:

  • Molecular Biology
  • Biochemistry
  • Genetics

Background:

  • Inteins are protein sequences analogous to introns.
  • They undergo self-catalyzed protein splicing post-translationally.
  • Mobile inteins exhibit endonuclease activity, enabling genetic mobility via homing.

Purpose of the Study:

  • To elucidate the structural basis of intein function.
  • To understand the origin, spread, and evolution of inteins.
  • To explore the potential of inteins in developing new functions, such as split inteins for trans-splicing.

Main Methods:

  • Analysis of intein structure.
  • Investigation of the protein splicing mechanism.
  • Comparative genomics and evolutionary studies.

Related Experiment Videos

Main Results:

  • Recent findings have illuminated intein structure and protein splicing mechanisms.
  • These insights provide clues into intein origin, spread, and evolution.
  • Inteins demonstrate evolutionary potential, leading to novel structures like split inteins.

Conclusions:

  • Understanding intein structure is crucial for comprehending their evolutionary trajectory.
  • Inteins represent a dynamic genetic element with evolving functions.
  • Further structural studies are needed to fully grasp the origin and evolution of inteins.