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Related Concept Videos

Proteomics01:33

Proteomics

8.6K
A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
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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.
Glycosylation occurs in...
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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.
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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Ribosome Profiling02:24

Ribosome Profiling

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Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
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Protein Networks02:26

Protein Networks

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An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
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Related Experiment Video

Updated: Oct 26, 2025

A Spin-Tip Enrichment Strategy for Simultaneous Analysis of N-Glycopeptides and Phosphopeptides from Human Pancreatic Tissues
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Decoding Post-Translational Modification Crosstalk With Proteomics.

Mario Leutert1, Samuel W Entwisle2, Judit Villén2

  • 1Department of Genome Sciences, University of Washington, Seattle, Washington, USA.

Molecular & Cellular Proteomics : MCP
|August 2, 2021
PubMed
Summary
This summary is machine-generated.

Post-translational modifications (PTMs) regulate cellular functions and protein complexity. This review covers how advanced proteomic technologies enable the study of PTM crosstalk, revealing complex regulatory networks.

Keywords:
crosstalkmass spectrometrypost-translational modificationproteomics

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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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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Proteomics

Background:

  • Post-translational modifications (PTMs) are crucial for protein function regulation, signal transduction, and cellular responses.
  • PTMs increase proteome complexity by expanding protein functionality and diversity.
  • PTM crosstalk involves the combinatorial action of multiple PTMs for higher-order cellular regulation.

Purpose of the Study:

  • To review recent advances in proteomic technologies, mass spectrometry, and bioinformatics for identifying PTM crosstalk.
  • To provide an overview of PTM crosstalk modes, elucidation methods, and functional consequence analysis.

Main Methods:

  • Leveraging advances in high-throughput proteomic technologies.
  • Utilizing sophisticated mass spectrometry instrumentation for PTM site identification.
  • Applying bioinformatics approaches for proteome-wide PTM crosstalk analysis.

Main Results:

  • Proteomic technologies have spurred the identification of PTM crosstalk across the proteome.
  • Measurements of PTM sites are key to elucidating these complex interactions.
  • The review consolidates knowledge on PTM crosstalk mechanisms and detection.

Conclusions:

  • Advanced technologies are essential for understanding the intricate network of PTM crosstalk.
  • Elucidating PTM crosstalk provides insights into higher-order protein regulation.
  • Future research can build upon these methods to explore functional consequences.