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Mucin Disulfide Bridges (N/A)
- Target
- N/A
- Molecular classification
- Post-translational Modification, Protein-Protein Interaction, Structural component
01
Overview
Mucin disulfide bridges are covalent bonds between cysteine residues within and between mucin monomers. These bridges are crucial for the structural integrity, polymerization, and gel-forming properties of mucins, which constitute the main component of mucus in various epithelial tissues. They stabilize mucin polymers, create a viscoelastic gel network for barrier function, and are essential for diseases like cystic fibrosis where abnormal bridge dynamics lead to thickened mucus.
- Other names
- Mucin Cross-linksMucin PolymerizationMUC2 Disulfide BridgesMUC5AC Disulfide BridgesIntermolecular Disulfide Bonds in MucinsIntramolecular Disulfide Bonds in Mucins
02
Mechanism of action
Reducing agents break disulfide bonds, leading to mucin depolymerization. Mucolytic agents affect mucus viscosity by various mechanisms. Bicarbonate impacts unpacking and bridge stability
03
Biological functions
Mucus Viscosity RegulationGel Network FormationEpithelial Barrier ProtectionMucin PolymerizationProtein Stabilization
04
Disease associations
Cystic FibrosisInflammatory Bowel DiseaseAsthmaChronic Obstructive Pulmonary Disease (COPD)Cancer (Mucin dysregulation)
05
Safety considerations
Excessive Mucus Depolymerization (leading to barrier disruption)Altered Mucus ViscoelasticityPotential for off-target effects of reducing agentsDysregulation of mucin secretion
06
Interacting drugs
Reducing Agents (e.g., DTT, TCEP)
2 more in the full profile.
07
Biomarkers
Mucin ConcentrationMucus ViscosityDisulfide Bond DensityMUC2 Polymer SizeMUC5AC Polymer Size
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