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Related Concept Videos

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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The glycocalyx is a carbohydrate-rich, fuzzy-appearing layer on the outer surface of the cell membrane. It is highly hydrophilic, because of this it attracts large amounts of water to the cell's surface. This aids the cell's interaction with the watery environment and also helps it to obtain substances dissolved in the water. It is also important for cell identification, self/non-self determination, and embryonic development and is used in cell-to-cell attachments to form tissues.
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Glycosaminoglycans (GAGs), also known as mucopolysaccharides, are long and linear polymers comprising of specific repeating disaccharides - the amino sugar that can be N-acetylglucosamine or N-acetylgalactosamine, and a uronic acid that is usually glucuronic acid or iduronic acid.
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Protein glycosylation starts in the ER lumen and continues in the Golgi apparatus. Glycosyltransferases catalyze the addition of sugar molecules or glycosylation of proteins. Usually, these enzymes add sugars to the hydroxyl groups of selected serine or threonine residues to form O-linked glycans or the amino groups of asparagine residues to form N-linked glycans. Different positions on the same polypeptide chain can contain differently linked glycans.
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Overview
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Statistical software is pivotal in data analysis and clinical trials by providing tools to analyze data, draw conclusions, and make predictions. These software packages range from simple data management applications to complex analytical platforms, supporting various statistical tests, models, and simulation techniques. Their significance lies in their ability to handle vast amounts of data with precision and efficiency, enabling researchers to validate hypotheses, identify trends, and make...
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Bioinformatics Resources for the Study of Glycan-Mediated Protein Interactions
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Glycowork: A Python package for glycan data science and machine learning.

Luc Thomès1, Rebekka Burkholz2, Daniel Bojar1

  • 1Department of Chemistry and Molecular Biology and Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, 41390 Gothenburg, Sweden.

Glycobiology
|June 30, 2021
PubMed
Summary
This summary is machine-generated.

Glycowork is a new Python package making glycan data science accessible for researchers. It simplifies the analysis of diverse carbohydrates, enabling deeper insights into biological processes.

Keywords:
Pythondata scienceglycobioinformaticsglycobiologymachine learning

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Area of Science:

  • Biochemistry
  • Computational Biology
  • Glycoscience

Background:

  • Glycans are vital for numerous biological functions but are challenging to analyze computationally.
  • Current analytical methods require significant computational expertise, limiting their use by many researchers.

Purpose of the Study:

  • To introduce glycowork, an open-source Python package designed to simplify glycan data science and machine learning.
  • To empower researchers with limited computational backgrounds to integrate glycan analysis into their workflows.

Main Methods:

  • Development of an open-source Python package, glycowork.
  • Implementation of functions for automatic glycan motif annotation and distribution analysis (heatmaps, statistical enrichment).
  • Inclusion of visualization tools, database interaction routines, and pre-trained machine learning models.

Main Results:

  • Glycowork provides accessible tools for analyzing glycan motifs and their distributions.
  • The package facilitates the use of machine learning for glycan data science.
  • Demonstrated utility through workflows analyzing glycan motifs in diverse biological contexts.

Conclusions:

  • Glycowork lowers the barrier to entry for computational glycan analysis.
  • The package enables researchers to extract novel insights from glycan datasets.
  • Glycowork is freely available, promoting wider adoption in biological research.