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Metal effect on intein splicing: A review.

Sunita Panda1, Ananya Nanda1, Sourya Subhra Nasker1

  • 1School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, Odisha, 751024, India.

Biochimie
|March 17, 2021
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Summary

Inteins are protein segments that splice themselves out, but metal ions can control this process. Understanding metal-intein interactions is key for developing new drugs and protein purification techniques.

Keywords:
InteinsMetal effectSplicing regulation

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Structural Biology

Background:

  • Inteins are protein sequences that catalyze their own excision and protein ligation via protein splicing.
  • This post-translational modification is essential for generating functional proteins across all domains of life.
  • Intein splicing regulation is crucial for applications in drug design and protein purification.

Purpose of the Study:

  • To review recent advances in intein splicing regulation by metal-intein interactions.
  • To compare the effects of various metal ions on different intein systems.
  • To elucidate the mechanistic basis of metal-intein interactions for engineering applications.

Main Methods:

  • Literature review of studies on metal-intein interactions.
  • Comparative analysis of metal ion effects (Zn, Cu, Pt, Cd, Co, Ni, Ca, Mg) on diverse inteins.
  • Discussion of intein polymorphism and metal atomic structure in modulating interactions.

Main Results:

  • Diverse metal ions (Zn, Cu, Pt, Cd, Co, Ni) exhibit heterogeneous inhibitory effects on intein splicing.
  • Divalent ions Ca and Mg generally do not inhibit intein splicing.
  • Observed variations in metal-intein interactions are attributed to intein sequence diversity and metal ion properties.

Conclusions:

  • Metal-intein interactions offer a versatile mechanism for controlling protein splicing.
  • Understanding these interactions can lead to the development of potent intein inhibitors or activators.
  • Mechanistic insights into metal-intein regulation are vital for advancing intein-based biotechnologies.