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.High Performance?High-performance grade with optimized purity and performance characteristics. Use for sensitive analyses where ordinary grades fall short.His Tag?His tag grade — recombinant protein bearing a His tag for affinity purification/detection. Use to purify, immobilize, or detect the tagged protein.Fc tag?Fc tag grade — recombinant protein bearing a Fc tag for affinity purification/detection. Use to purify, immobilize, or detect the tagged protein. The Fc tag aids dimerization and protein-A/G capture.≥95%(SDS-PAGE)
Expression System
HEK293
Accession #
P20138
Protein Tag
C-hFc & His
Expression system
HEK293
Endotoxin Concentration
<0.1 EU/μg
Bioactivity
1、Measured by the ability of the immobilized protein to support the adhesion of human red blood cells. The ED50 for this effect is 1‑4 µg/mL. 2、Immobilized Recombinant Human CD33 Protein (rp143966) at 2.0 μg/mL can bind Gemtuzumab (anti-CD33) (Ab175859). The ED50 for this effect is 391.3 ng/mL.
Animal Free,Carrier Free,Bioactive,ActiBioPure™,Azide Free,High Performance,His-Tag,Fc tag,≥95%(SDS-PAGE) ActiBioPure™,Animal Free,Azide Free,Bioactive,Carrier Free,Fc tag,High Performance,His Tag for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
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Storage & shipping
Store at -20°C Ships Ice chest + Ice pads 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.
Overview
Purity
>95% SDS-PAGE
Additional sequence information
Fc, 6His tag at the C-terminus.
Function
Putative adhesion molecule of myelomonocytic-derived cells that mediates sialic-acid dependent binding to cells. Preferentially binds to alpha-2,6-linked sialic acid. The sialic acid recognition site may be masked by cis interactions with sialic acids on the same cell surface. In the immune response, may act as an inhibitory receptor upon ligand induced tyrosine phosphorylation by recruiting cytoplasmic phosphatase(s) via their SH2 domain(s) that block signal transduction through dephosphorylation of signaling molecules. Induces apoptosis in acute myeloid leukemia (in vitro).
Post-translational
Phosphorylation of Tyr-340 is involved in binding to PTPN6 and PTPN11. Phosphorylation of Tyr-358 is involved in binding to PTPN6.
ActiBioPure™, Animal Free, Azide Free, Bioactive, Carrier Free, Fc tag, High Performance, His Tag
Specifications & Purity
Animal Free, Carrier Free, Bioactive, ActiBioPure™, Azide Free, High Performance, His-Tag, Fc tag, ≥95%(SDS-PAGE)
Purity
＞95%(SDS-PAGE)
Bioactivity
1、Measured by the ability of the immobilized protein to support the adhesion of human red blood cells. The ED50 for this effect is 1‑4 µg/mL. 2、Immobilized Recombinant Human CD33 Protein (rp143966) at 2.0 μg/mL can bind Gemtuzumab (anti-CD33) (Ab175859). The ED50 for this effect is 391.3 ng/mL.
71.0 kDa, under reducing conditions ; 150.7 kDa, under non-reducing conditions.
Molecule Type
Protein
Storage and Shipping
Shape
Lyophilized
Reconstitution
Reconstitute in water to a concentration of 0.1-0.5 mg/ml.
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
Stability And Storage
Store at -20~-80℃ for more than 1 year
Images
Recombinant Human CD33 Protein (rp143966) - Protein Bioactivity Immobilized Recombinant Human CD33 Protein (rp143966) at 2.0 μg/mL can bind CD33 Mouse mAb (Ab006571). The ED₅₀ for this effect is 251.9 ng/mL.
Recombinant Human CD33 Protein (rp143966) - Protein Bioactivity Immobilized Recombinant Human CD33 Protein (rp143966) at 2.0 μg/mL can bind Gemtuzumab (anti-CD33) (Ab175859). The ED₅₀ for this effect is 391.3 ng/mL.
Recombinant Human CD33 Protein (rp143966) - SDS-PAGE 3 μg/lane of Recombinant Human CD33 Protein was resolved with SDS-PAGE under reducing (R) and non-reducing (N) conditions and visualized by Coomassie® Blue staining, showing the band at 71.0 kDa under reducing conditions and 150.7 kDa under non-reducing conditions.
Documentation
📋 Safety Data Sheet (SDS)
Comprehensive hazard, handling, storage, and regulatory compliance document.
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