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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.
Glycosylation occurs in...
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Proteoglycans01:05

Proteoglycans

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Glycans, a class of complex heterogeneous molecules, can be covalently attached to proteins to form glycosylated proteins that regulate various physiological and pathological processes. Glycosylated proteins or glycoproteins comprise N-linked and O-linked oligosaccharides. O-glycosylation is the most common type of protein glycosylation. Here, glycans attach to the oxygen atom of the hydroxyl groups of Serine or Threonine residues. O-linked glycosylation occurs later in protein processing,...
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Glucagon-like Receptor Agonists01:24

Glucagon-like Receptor Agonists

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Incretins include glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which stimulate insulin secretion post-meals. In type 2 diabetes, GIP's efficacy is reduced, making GLP-1 a viable drug target. GIP originates from preproGIP.
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
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Peptidoglycan Synthesis01:28

Peptidoglycan Synthesis

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Structure of PeptidoglycanPeptidoglycan is a vital structural component of the bacterial cell wall, providing mechanical strength and shape to the cell. It consists of repeating units of two sugars—N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM)—linked by β-1,4 glycosidic bonds. These sugar chains are cross-linked by short peptide chains, forming a mesh-like polymer that surrounds the bacterial plasma membrane.Cytoplasmic Phase – Precursor SynthesisPeptidoglycan...
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Inhibitors of Gram-positive Cell Wall Synthesis01:23

Inhibitors of Gram-positive Cell Wall Synthesis

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Bacterial cell walls are typically rigid structures composed mainly of peptidoglycan, a mesh-like polymer that provides mechanical strength and maintains cell shape. The synthesis of peptidoglycan is a crucial process in bacterial growth and serves as a primary target for many antibiotics.Mechanism of Action of Beta-Lactam AntibioticsBeta-lactam antibiotics, such as penicillin, inhibit peptidoglycan synthesis in actively growing cells. These antibiotics share a characteristic four-membered...
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Inhibitors of Bacterial Protein Synthesis01:25

Inhibitors of Bacterial Protein Synthesis

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Aminoglycosides constitute a highly potent class of bactericidal antibiotics that exert their antimicrobial effects by targeting the bacterial ribosome, specifically disrupting protein synthesis. These polycationic molecules consist of amino-modified sugars linked via glycosidic bonds to an aminocyclitol core such as 2-deoxystreptamine or streptamine. Their strong positive charges facilitate tight binding to the negatively charged phosphate backbone of ribosomal RNA (rRNA), primarily at the 16S...
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Related Experiment Video

Updated: May 6, 2026

Glycopeptide Capture for Cell Surface Proteomics
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Glycopeptide Capture for Cell Surface Proteomics

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[Glycopeptides].

I Hayashi1

  • 1Department of Internal Medicine, Cancer Institute Hospital.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|April 18, 2001
PubMed
Summary
This summary is machine-generated.

Glycopeptides like Vancomycin and Teicoplanin combat Gram-positive infections, including MRSA. Optimal dosing strategies, such as loading doses for Teicoplanin and continuous infusions for Vancomycin, are crucial for efficacy and preventing resistance.

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The Application of Open Searching-based Approaches for the Identification of Acinetobacter baumannii O-linked Glycopeptides
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Area of Science:

  • Pharmacology
  • Microbiology
  • Infectious Diseases

Context:

  • Glycopeptides (Vancomycin, Teicoplanin) are key treatments for Gram-positive cocci, particularly Methicillin-Resistant Staphylococcus aureus (MRSA) in Japan.
  • Vancomycin and Teicoplanin exhibit distinct pharmacokinetic profiles, including protein binding, post-antibiotic effect, and half-life, influencing their clinical efficacy.
  • Minimum Inhibitory Concentration (MIC) is a critical determinant of glycopeptide effectiveness.

Purpose:

  • To compare the modes of action and pharmacokinetic differences between Vancomycin and Teicoplanin.
  • To recommend optimal administration strategies for maintaining effective serum concentrations of glycopeptides.
  • To explore combination therapies for biofilm-related infections and multidrug-resistant pathogens.

Summary:

  • Effective serum concentrations of Vancomycin and Teicoplanin are essential for successful treatment, shortening duration, and preventing resistance development.
  • Loading doses for Teicoplanin and continuous infusions for Vancomycin are recommended to achieve and maintain therapeutic levels.
  • Combination therapy, including Fosfomycin, demonstrates superior efficacy against challenging infections caused by Pseudomonas aeruginosa and MRSA, especially in biofilm-related diseases.

Impact:

  • Optimized dosing regimens can enhance therapeutic outcomes and mitigate the emergence of antibiotic resistance.
  • Combination therapies offer a promising strategy for treating complex and multidrug-resistant bacterial infections.
  • Understanding pharmacokinetic differences is vital for personalized glycopeptide therapy selection and management.