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primary topic: Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin

Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin
type: Article
abstract: Synovial joints exhibit remarkable lubrication mechanisms, essential for the smooth articulation of bones. This intricate process is orchestrated by key biomolecular components, such as hyaluronic acid, lipids, aggrecan, and glycoproteins. Lubricin, characterized by its intrinsically disordered region and highly glycosylated structure, is part of these glycoproteins. Lubricin significantly contributes to reducing viscosity and ensuring the sustained efficacy of synovial joints. The protein comprises two globular end domains and an intrinsically disordered central domain. The end domains bind to cartilage surfaces, allowing the remaining protein to extend into the synovial fluid. The central domain, known as the mucin-like domain, is abundant in O-glycans and mainly responsible for lubricin functionality. The O-glycans constitute approximately 30-35\% of the entire lubricin structure. O-glycans play a pivotal role in enabling lubricin to fulfill its highly specialized function. Despite the recognized importance of O-glycans, a detailed understanding of their influence on the structure and viscosity of lubricin remains elusive. Using extensive molecular dynamics (MD) simulations, in this thesis we unveil the influence of O-glycans on the rheological and viscosity properties of lubricin. In the first part of this thesis, our focus was on understanding how O-glycans influence the structure of lubricin. To achieve this, glycosylated fragments of lubricin were generated and modeled, and a suitable force field for intrinsically disordered glycoproteins was prepared. Five different segments of lubricin, each with a length of 80 amino acids, were considered. Utilizing Monte Carlo sampling, six different glycosylated fragments were introduced for each segment. Equilibrium molecular dynamics simulations were then conducted to explore the role of glycans in the conformational properties of lubricin. The findings reveal that the presence of O-glycans induces a more extended conf…
date: 2024
author list: authors
type: EPrint
type: DoctoralThesisEPrint
is part of: repository
has document: Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (PDF)
has document: Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (Other)
subject: 500 Naturwissenschaften und Mathematik

Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (PDF)
type: Document
has file: final-thesis.pdf
has part: final-thesis.pdf

Saber Boushehri
type: Person
given name: Saber
family name: Boushehri

Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (Other)
type: Document
is version of: Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (PDF)
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Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (Other)
type: Document
is version of: Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (PDF)
is volatile version of: Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (PDF)
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Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (Other)
type: Document
is version of: Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (PDF)
is volatile version of: Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (PDF)
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Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (Other)
type: Document
is version of: Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (PDF)
is volatile version of: Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (PDF)
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Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (Other)
type: Document
is version of: Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (PDF)
is volatile version of: Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin (PDF)
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HTML Summary of #34824 Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin
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primary topic: Effect of O-glycans on the Structure and Viscosity of Intrinsically Disordered and Glycosylated Protein Lubricin

500 Naturwissenschaften und Mathematik
type: Concept
preferred label: 500 Natural sciences and mathematics @en