β-N-Acetylhexosaminidase, Streptococcus pneumoniae
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β-N-Acetylhexosaminidase, Streptococcus pneumoniae is a cell surface virulence factor of Streptococcus pneumoniae, which contains two synergistically acting GH20 domains (with higher activity in GH20-2). β-N-Acetylhexosaminidase, Streptococcus pneumoniae specifically recognizes and hydrolyzes substrates with β(1,2) glycosidic bonds via Trp-443 and Tyr-482 residues. β-N-Acetylhexosaminidase, Streptococcus pneumoniae catalyzes the hydrolysis of β(1,2)-linked N-acetylglucosamine groups and related disaccharides, and promotes persistent colonization of bacteria in the airway by modifying host defense molecules and releasing monosaccharides for bacterial growth. β-N-Acetylhexosaminidase, Streptococcus pneumoniae can be used in studies related to Streptococcus pneumoniae infection, acute pneumonia, otitis media and meningitis.
For research use only. We do not sell to patients.
- CAS No.: 9012-33-3
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
All Endogenous Metabolite Isoforms
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Biological Activity
β-N-Acetylhexosaminidase from Streptococcus pneumoniae specifically hydrolyzes β(1,2)-linked NAG-Man disaccharides; the Trp-443/Tyr-482 residues in the GH20-1 domain and the Trp-876/Tyr-914 residues in the GH20-2 domain are critical for this activity. Substitution of the tyrosine residues completely abolishes the hydrolytic activity against NAGβ(1,2) Man, and the tandem GH20-1&2 recombinant exhibits the highest activity toward this disaccharide (with a kcat/Km value of 38.70 min-1mM-1)[2].
β-N-Acetylhexosaminidase from Streptococcus pneumoniae (10 mg/mL) contains a GH20-1 domain that adopts a conserved (β/α)8 TIM barrel structure, with NAG bound to its active site. Substitution of Tyr with Cys-469 alters the conformation of NAG, resulting in lower enzymatic activity of GH20-1 than that of GH20-2[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:CD1 mice with Pneumococcal infection (5 weeks old)[1]
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Dosage:225 μg
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Administration:Intranasal; single dose 30 minutes prior to bacterial infection
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Result:Reduced colonization of the D39 ΔbgaC mutant in the nasopharynxes, lungs, and blood compared to untreated control mice.
3.2.1.52
≥800 U/L
Chemical Information
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CAS No. 9012-33-3
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Appearance Liquid
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Color Colorless to light yellow
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SMILES
[b-N-Acetylhexosaminidase, Streptococcus pneumoniae]
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Purity & Documentation
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Data Sheet (269 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)