Papain (lyophilized powder, ≥10 units/mg protein)
Based on 1 Customer Validation
Papain (lyophilized powder, ≥10 units/mg protein) is a cysteine protease of the peptidase C1 family. Papain (lyophilized powder, ≥10 units/mg protein) enhances red cell agglutination by anti-D and anti-A, and increases red cell sensitivity to K cell-mediated lysis in ADCC assays. Papain (lyophilized powder, ≥10 units/mg protein) can induce pulmonary emphysema. Papain (lyophilized powder, ≥10 units/mg protein) can be used for the researches of Rh haemolytic disease of the newborn and pulmonary emphysema.
For research use only. We do not sell to patients.
- CAS No.: 9001-73-4
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
All Cathepsin Isoforms
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Biological Activity
Description
In Vitro
This product requires activation before use. Activation method:
Incubate the enzyme in a solution containing 1.1 mM EDTA, 0.067 mM mercaptoethanol, and 5.5 mM cysteine-HCl for 30 minutes.
Papain (lyophilized powder, ≥10 units/mg protein) (5 U/mL; 15 min) pretreatment of O Rh-positive red cells enhances anti-D-mediated agglutination, while it slightly reduces anti-A-mediated agglutination of A Rh-negative red cells[2].
Papain (lyophilized powder, ≥10 units/mg protein) (5 U/mL; 15 min) pretreatment of O Rh-positive red cells increases their sensitivity to lymphocyte-mediated lysis in anti-D-mediated ADCC assays at low antibody concentrations and a 15:1 effector-to-target ratio[2].
Papain (lyophilized powder, ≥10 units/mg protein) (5 U/mL; 15 min) pretreatment of O Rh-positive target red cells enables significant PBMC-mediated lysis in anti-D-mediated ADCC assays at a 1:3:3 effector-to-target-to-competitor ratio[2].
Papain (lyophilized powder, ≥10 units/mg protein) (5 U/mL; 15 min) pretreatment of A Rh-negative target red cells enables significant PBMC-mediated lysis in anti-A-mediated ADCC assays at a 1:3:3 effector-to-target-to-competitor ratio[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
In Vivo
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:BALB/c (female, 20-25 g)[1]
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Dosage:10 IU
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Administration:Intratracheal instillatio; days 0 and 7
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Result:Increased viscoelastic/inhomogeneous pressure, static elastance, and viscoelastic component of elastance.
Increased polymorphonuclear (PMN) cell count, mean alveolar diameter, functional residual capacity (FRC) and decreased elastic fiber area.
Increased KC levels, MIP-2 levels, and IFN-γ levels.
Left TNF-α, IL-1β, and IL-6 levels unchanged relative to saline controls.
Chemical Information
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CAS No. 9001-73-4
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Appearance Solid
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Color White to off-white
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SMILES
[Papain (lyophilized powder, ?0 units/mg protein)]
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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
References
[1]. Machado MN, et al. Bone Marrow-Derived Mononuclear Cell Therapy in Papain-Induced Experimental Pulmonary Emphysema. Front Physiol. 2018 Feb 20;9:121. [Content Brief]
[2]. B M Kumpel, et al. Comparison of lysis of bromelain and papain treated red cells in ADCC assays.Immunol Lett. 1992 Feb 15;31(3):237-40. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)