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Related Concept Videos

Protein Modifications in the RER01:26

Protein Modifications in the RER

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Modification of secretory and transmembrane proteins entering the rough ER begins in the ER lumen. These modifications aid in protein folding and stabilize the acquired tertiary structure. Protein modifications in the rough ER co-occur at different stages of protein folding.
Broadly, these modifications can be categorized into four main categories — glycosylation, formation of disulfide bonds, assembly of protein subunits, and specific proteolytic cleavages like removal of signal...
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Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
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Histone Modification02:32

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The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
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Spreading of Chromatin Modifications02:25

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The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer...
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Related Experiment Video

Updated: Jan 28, 2026

Preparation of Silicon Nanowire Field-effect Transistor for Chemical and Biosensing Applications
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Engineered Protein Modification: A New Paradigm for Enhancing Biosensing Sensitivity and Diagnostic Accuracy.

Zheng Xu1, Chu Wang1, Ziting Zhang1

  • 1State Key Laboratory of Flexible Electronics (LoFE) and Jiangsu Key Laboratory of Smart Biomaterials and Theranostic Technology, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, Nanjing 210023, China.

Biosensors
|January 27, 2026
PubMed
Summary
This summary is machine-generated.

Engineered protein modifications combined with biosensors offer enhanced diagnostic accuracy for diseases and environmental monitoring. Optimizing these strategies is key for developing reliable, clinically applicable tools.

Keywords:
biosensingdisease diagnosisenvironmental monitoringfood safetypost-translational modificationsprotein modifications

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Area of Science:

  • Biochemistry
  • Biotechnology
  • Analytical Chemistry

Background:

  • Post-translational modifications (PTMs) like phosphorylation and glycosylation are crucial for cellular functions and disease development.
  • Detecting PTMs is a rapidly advancing area with significant potential for diagnostics.

Purpose of the Study:

  • To systematically review the integration of engineered protein modifications with biosensing technologies.
  • To assess how these integrations enhance biosensor performance for diagnostic applications.

Main Methods:

  • Critical analysis of current methodologies for engineered protein modifications and biosensing.
  • Examination of PTM manipulation strategies to improve biosensor sensitivity and specificity.

Main Results:

  • Engineered PTMs significantly enhance biosensor sensitivity and specificity.
  • Advancements in detection platforms are noted, alongside challenges in real-world application and standardization.

Conclusions:

  • Optimizing protein modification-based sensing is vital for robust, clinically translatable diagnostic tools.
  • Further research is needed to overcome technical barriers and accelerate practical implementation.