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Mucin Disulfide Bond Hydrolysis (N/A)
- Target
- N/A
- Molecular classification
- Enzymatic Activity, Chemical Reaction
01
Overview
Mucin disulfide bond hydrolysis refers to the enzymatic or chemical cleavage of disulfide (S–S) bonds within mucin proteins, primarily gel-forming secreted mucins like MUC2, MUC5AC, and MUC5B. These bonds are crucial for maintaining the polymeric structure and viscoelastic properties of mucus. Hydrolysis disrupts the mucin network, reducing mucus viscosity and elasticity, which can be therapeutically exploited to improve mucociliary clearance in diseases characterized by mucus hypersecretion or hyperviscosity, such as asthma, COPD, and cystic fibrosis. Agents like N-acetylcysteine promote this hydrolysis.
- Other names
- Mucin S-S Bond CleavageMucus Disulfide Bond ReductionMucin Depolymerization
02
Mechanism of action
Reduction of disulfide bonds in mucin polymers, leading to depolymerization and reduced mucus viscosity.
03
Biological functions
Regulation of mucus viscosityMaintenance of mucus gel structureMucociliary clearance
04
Disease associations
AsthmaCOPDCystic FibrosisChronic BronchitisBronchiectasis
05
Safety considerations
Potential for excessive mucus liquefactionCompromised barrier function of mucusPossible off-target effects on other disulfide-containing proteins
06
Interacting drugs
N-acetylcysteine
2 more in the full profile.
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