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Related Concept Videos

Covalently Linked Protein Regulators02:04

Covalently Linked Protein Regulators

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Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
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It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
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Eukaryotic cells can degrade proteins through several pathways. One of the most important among these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
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Detection of Protein Ubiquitination
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Published on: August 19, 2009

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Chemical methods for protein ubiquitination.

Renliang Yang1, Chuan-Fa Liu

  • 1School of Biological Sciences, Nanyang Technological University, Singapore, Singapore.

Topics in Current Chemistry
|April 11, 2015
PubMed
Summary

Chemical methods enable the study of protein ubiquitination, a crucial post-translational modification involved in cellular processes and disease. This review details recent advances in chemical ubiquitination techniques for better protein analysis.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Background:

  • Eukaryotic proteins undergo diverse post-translational modifications (PTMs), including ubiquitination.
  • Ubiquitination regulates critical cellular functions like protein degradation and gene expression, with dysregulation linked to human diseases.
  • Characterizing ubiquitination events is challenging due to difficulties in isolating modified proteins and limitations of in vitro enzymatic methods.

Purpose of the Study:

  • To review recent methodological developments in chemical protein ubiquitination.
  • To highlight chemical approaches as a powerful solution for preparing ubiquitinated proteins for structural and functional studies.

Main Methods:

  • Chemical synthesis strategies for protein ubiquitination.
  • Approaches to overcome challenges in isolating ubiquitinated proteins.

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Profiling Ubiquitin and Ubiquitin-like Dependent Post-translational Modifications and Identification of Significant Alterations
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Main Results:

  • Significant progress has been made in developing chemical methods for protein ubiquitination.
  • These chemical techniques offer a viable alternative to enzymatic methods for producing ubiquitinated proteins.

Conclusions:

  • Chemical ubiquitination is essential for advancing the structural and functional understanding of ubiquitination.
  • Continued research in chemical approaches is vital for characterizing poorly understood ubiquitination events and their role in disease.