GRADE & PURITYAnimal Free?Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material.Carrier Free?Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays.Bioactive?Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure.ActiBioPure™?ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required.Azide Free?Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory.His Tag?His tag grade — recombinant protein bearing a His tag for affinity purification/detection. Use to purify, immobilize, or detect the tagged protein.≥90%(SDS-PAGE)See COA
Expression System
HEK293
Accession #
P25774-1
Protein Tag
C-8×His
Expression system
HEK293
Endotoxin Concentration
<0.1 EU/μg
Bioactivity
Measured by its ability to cleave a fluorogenic peptide substrate, (7-methoxycoumarin-4-yl) acetyl-Arg-Pro-Lys-Pro-Val-Glu-Nva-Trp-Arg-Lys (2, 4-dinitrophenyl)-NH2. Cleavage of substrate can be measured using excitation and emission wavelength at 320 nm and 405 nm, respectively.The specific activity is >300 pmoles/min/μg.
Animal Free,Carrier Free,Bioactive,ActiBioPure™,Azide Free,His-Tag,≥90%(SDS-PAGE),See COA ActiBioPure™,Animal Free,Azide Free,Bioactive,Carrier Free,His Tag for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
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Storage & shipping
Store at -80°C,Avoid repeated freezing and thawing Ships Dry ice packs + Cold packs Check lot-specific COA for exact specifications.
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Quality documents
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
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Literature proof
Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Specifications
Product Name
Recombinant Human Cathepsin S protein, ≥90% (SDS-PAGE)
ActiBioPure™, Animal Free, Azide Free, Bioactive, Carrier Free, His Tag
Specifications & Purity
Animal Free, Carrier Free, Bioactive, ActiBioPure™, Azide Free, His-Tag, ≥90%(SDS-PAGE), See COA
Biochemical and Physiological Mechanisms
Thiol protease. Key protease responsible for the removal of the invariant chain from MHC class II molecules and MHC class II antigen presentation. The bond-specificity of this proteinase is in part similar to the specificities of cathepsin L1 Publication.
Purity
≥90% (SDS-PAGE)
Bioactivity
Measured by its ability to cleave a fluorogenic peptide substrate, (7-methoxycoumarin-4-yl) acetyl-Arg-Pro-Lys-Pro-Val-Glu-Nva-Trp-Arg-Lys (2, 4-dinitrophenyl)-NH2. Cleavage of substrate can be measured using excitation and emission wavelength at 320 nm and 405 nm, respectively.The specific activity is >300 pmoles/min/μg.
Store at -80°C,Avoid repeated freezing and thawing
Shipped In
Dry ice packs + Cold packs
Stability And Storage
Store at -80℃ long term (1 year). Upon receipt, it is recommended to aliquot. Avoid freeze/thaw cycle.
Images
Recombinant Human Cathepsin S protein (rp143673) - SDS-PAGE 2 μg/lane of Recombinant Human Cathepsin S Protein was resolved with SDS-PAGE under reducing (R) and non-reducing (N) conditions and visualized by Coomassie® Blue staining, showing the bands at 39 kDa (Pro) & 28 kDa (mature). Human Cathepsin S is synthesized as a preproenzyme of 331 amino acid residues consisting a signal peptide (residues 1‑16), a pro region (residues 17‑114), and the mature enzyme (residues 115‑331).
Documentation
📋 Safety Data Sheet (SDS)
Comprehensive hazard, handling, storage, and regulatory compliance document.
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