Related Experiment Video
Updated: Jun 6, 2026

05:56
Spot Variation Fluorescence Correlation Spectroscopy for Analysis of Molecular Diffusion at the Plasma Membrane of Living Cells
Published on: November 12, 2020
Proteomics and the dynamic plasma membrane: Quo Vadis?
Richard R Sprenger1, Ole N Jensen
1Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense M, Denmark.
Proteomics
|November 17, 2010
Summary
Mass spectrometry (MS)-based proteomics now tracks dynamic changes in the plasma membrane proteome. This advancement is key for understanding cellular functions, diseases, and identifying new drug targets.
Area of Science:
- Proteomics
- Cell Biology
- Biochemistry
Background:
- The plasma membrane acts as a crucial cellular barrier and signaling hub.
- Understanding its dynamic proteome is vital for biological and disease research.
- Current proteomics methods are evolving to capture membrane protein dynamics.
Purpose of the Study:
- To review recent advancements in mass spectrometry (MS)-based plasma membrane proteomics.
- To highlight the challenges and importance of studying the dynamic plasma membrane proteome.
- To showcase progress in eukaryotic systems, including mammals, yeast, and plants.
Main Methods:
- Mass spectrometry (MS)-based proteomics techniques.
- Enrichment strategies for plasma membrane proteins.
- Quantitative proteomics for analyzing dynamic changes.
- Post-translational modification (PTM) analysis.
Main Results:
- MS-based proteomics enables monitoring of plasma membrane protein abundance, location, and PTMs.
- Key examples from mammals, yeast, and plants demonstrate recent progress.
- Technological advancements are crucial for detailed functional and comparative proteomic analyses.
Conclusions:
- The dynamic plasma membrane proteome is increasingly accessible to MS-based analysis.
- Characterizing these dynamics is essential for understanding cellular processes and disease.
- Further development in enrichment and quantification technologies will drive future discoveries.
Related Concept Videos
Enlargement of the Plasma Membrane
Cell division and enlargement are processes that require precise control. The control ensures that cell division cannot proceed unless the cell has grown to a specific size. A spherical, dividing cell requires an approximately 1.6X increase in its surface area to double its volume. The secretory pathway also has a significant role in cell membrane enlargement. Secretory vesicles that bud off from the Golgi apparatus and later fuse with the plasma membrane during exocytosis are a major source of...
Proteomics
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 proteomics...
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 proteomics...
Membrane Fluidity
Membrane fluidity is explained by the fluid mosaic model of the cell membrane, which describes the plasma membrane structure as a mosaic of components—including phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character.
Mosaic nature of the membrane
The mosaic characteristic of the membrane helps the plasma membrane remain fluid. The integral proteins and lipids exist as separate but loosely-attached molecules in the membrane. The membrane is a relatively...
Mosaic nature of the membrane
The mosaic characteristic of the membrane helps the plasma membrane remain fluid. The integral proteins and lipids exist as separate but loosely-attached molecules in the membrane. The membrane is a relatively...
Membrane Fluidity
Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.Fatty acids tails of phospholipids can be either saturated or...
Fluid Mosaic Model
Scientists identified the plasma membrane in the 1890s and its principal chemical components (lipids and proteins) by 1915. The model for plasma membrane structure, proposed in 1935 by Hugh Davson and James Danielli, was the first model to be widely accepted in the scientific community. The model was based on the plasma membrane's "railroad track" appearance in early electron micrographs. Davson and Danielli theorized that the plasma membrane's structure resembled a sandwich with the analogy of...
Fluid Mosaic Model
The fluid mosaic model was first proposed as a visual representation of research observations. The model comprises the composition and dynamics of membranes and serves as a foundation for future membrane-related studies. The model depicts the structure of the plasma membrane with a variety of components, which include phospholipids, proteins, and carbohydrates. These integral molecules are loosely bound, defining the cell’s border and providing fluidity for optimal function.LipidsThe most...
