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Related Concept Videos

Proteomics01:33

Proteomics

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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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Microscopic Anatomy of Skeletal Muscles01:13

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Skeletal muscle cells, also called muscle fibers, are distinctly elongated, multi-nucleated, slender biological units. They are packed with specialized structures designed to facilitate their primary function, which is contraction.
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Skeletal muscle is the most abundant type of muscle in the body. Tendons are the connective tissue that attaches skeletal muscle to bones. Skeletal muscles pull on tendons, which in turn pull on bones to carry out voluntary movements.
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Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions.
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Skeletal Muscle Gender Dimorphism from Proteomics
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Comparing Simplification Strategies for the Skeletal Muscle Proteome.

Bethany Geary1, Iain S Young2, Phillip Cash3

  • 1Division of Health Research, University of the Highlands and Islands, Inverness IV2 3JH, UK. beth.geary@uhi.ac.uk.

Proteomes
|March 2, 2017
PubMed
Summary
This summary is machine-generated.

Investigating skeletal muscle proteomic analysis, this study found OFFGEL isoelectric focusing effectively identifies more proteins. Combining it with filter-aided sample preparation (FASP) enhances confidence in characterizing this complex tissue.

Keywords:
FASPOFFGELProteoMinerprotein equalizationproteome simplificationskeletal muscle

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Area of Science:

  • Proteomics
  • Biochemistry
  • Molecular Biology

Background:

  • Skeletal muscle proteome exhibits a wide dynamic range, with abundant proteins masking lower-abundance ones.
  • This dynamic range poses challenges for comprehensive proteomic characterization.
  • Accurate identification of low-abundance proteins is crucial for understanding muscle function and disease.

Purpose of the Study:

  • To evaluate pre-fractionation methods for improved skeletal muscle proteome characterization.
  • To identify optimal strategies for overcoming the dynamic range limitations in skeletal muscle proteomics.
  • To enhance the depth and confidence of protein identifications in skeletal muscle samples.

Main Methods:

  • Comparison of various pre-fractionation techniques at both protein and peptide levels.
  • Utilized OFFGEL isoelectric focusing for protein separation.
  • Employed filter-aided sample preparation (FASP) in conjunction with peptide-level OFFGEL.

Main Results:

  • OFFGEL isoelectric focusing identified over 750 proteins, surpassing alternative methods.
  • OFFGEL demonstrated enrichment of distinct sub-populations within the skeletal muscle proteome.
  • The combination of FASP and peptide-level OFFGEL increased the number of peptides per protein, boosting result confidence.

Conclusions:

  • A multiplexed approach combining OFFGEL and FASP is recommended for comprehensive skeletal muscle proteome characterization.
  • These methods effectively address the dynamic range challenges inherent in skeletal muscle samples.
  • Enhanced proteomic analysis can provide deeper insights into skeletal muscle biology.