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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.
These groups modify specific amino acids in a protein....
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Protein Glycosylation01:25

Protein Glycosylation

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Glycosylation, the most common post-translational modification for proteins, serves diverse functions. Adding sugars to proteins makes the proteins more resistant to proteolytic digestion. Glycosylated proteins can act as markers and receptors to promote cell-cell adhesion. Additionally, they have many essential quality control functions in the cell, such as correct protein folding and facilitating transport of misfolded proteins to the cytosol, which can be degraded.
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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.
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Translation01:31

Translation

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Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Proteins are...
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Translation01:31

Translation

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Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
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Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

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The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
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Utilizing a Comprehensive Immunoprecipitation Enrichment System to Identify an Endogenous Post-translational Modification Profile for Target Proteins
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Post-translational Modifications in Proteins: Prediction Methods, Biological Functions, and Diseases.

Shuning Zhang1,2, Jingmin Li1,2, Meihuan Chen2

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Summary
This summary is machine-generated.

Posttranslational modifications (PTMs) regulate protein function and are crucial in erythropoiesis. Understanding PTMs offers insights into disease mechanisms and precision medicine applications.

Keywords:
clinical translationerythroid disordersmass spectrometryposttranslational modificationssignaling cascades

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Area of Science:

  • Molecular Biology
  • Proteomics
  • Biochemistry

Background:

  • Posttranslational modifications (PTMs) are critical regulators of protein function, influencing cellular signaling and epigenetic memory.
  • Mass spectrometry-based proteomics has advanced the study of PTMs, but identifying disease-specific sites remains challenging.
  • Erythropoiesis serves as an ideal model system for studying PTM dynamics due to its well-defined stages.

Purpose of the Study:

  • To review the applications, detection, and prediction technologies for PTMs.
  • To emphasize the roles of specific PTMs (phosphorylation, ubiquitination, methylation, SUMOylation, glycosylation, acetylation) in physiological and pathological erythropoiesis.
  • To explore the clinical translation and drug development potential of PTMs in precision medicine.

Main Methods:

  • Literature review focusing on PTM applications, detection, and prediction.
  • Analysis of PTM mechanisms, including phosphorylation, ubiquitination, methylation, SUMOylation, glycosylation, and acetylation.
  • Examination of PTM roles in erythroid specification, maturation, and disease pathogenesis.

Main Results:

  • PTMs significantly impact erythropoiesis, with specific modifications playing key roles in cell development and function.
  • Perturbations in PTM networks can lead to erythroid-related diseases.
  • Significant progress has been made in understanding PTMs for clinical applications and drug development.

Conclusions:

  • Dissecting PTM circuitry in erythropoiesis provides crucial insights into disease mechanisms.
  • PTMs hold considerable potential for precision medicine, although challenges remain in their clinical translation.
  • This review offers new perspectives on PTM research, highlighting their importance in health and disease.