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Human Siglec-15 / CD33L3 Protein, His Tag (MALS verified)

  • Synonym
    CD33 antigen-like 3,SIGLEC-15,CD33L3,sialic acid-binding Ig-like lectin 15,Siglec15,Siglec-15
  • Source
    Human Siglec-15, His Tag(SG5-H52H3) is expressed from human 293 cells (HEK293). It contains AA Phe 20 - Thr 263 (Accession # Q6ZMC9-1).
    Predicted N-terminus: Phe 20
  • Molecular Characterization
    Siglec-15 Structure

    This protein carries a polyhistidine tag at the C-terminus.

    The protein has a calculated MW of 28.4 kDa. The protein migrates as 33-40 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >90% as determined by SDS-PAGE.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in 25 mM MES, 150 mM NaCl, pH7.5 with trehalose as protectant.

    Contact us for customized product form or formulation.

  • Reconstitution

    Please see Certificate of Analysis for specific instructions.

    For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

  • Storage

    For long term storage, the product should be stored at lyophilized state at -20°C or lower.

    Please avoid repeated freeze-thaw cycles.

    This product is stable after storage at:

    1. -20°C to -70°C for 24 months in lyophilized state;
    2. -70°C for 12 months under sterile conditions after reconstitution.
SDS-PAGE
Siglec-15 SDS-PAGE

Human Siglec-15, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90%.

SEC-MALS
Siglec-15 MALS images

The purity of Human Siglec-15, His Tag (Cat. No. SG5-H52H3) is more than 85% and the molecular weight of this protein is around 60-70 kDa verified by SEC-MALS.

Bioactivity-ELISA
 Siglec-15 ELISA

Immobilized Human Siglec-15, His Tag (Cat. No. SG5-H52H3) at 1 μg/mL (100 μL/well) can bind Mouse Human chimeric mAb (5G12, Human IgG1) with a linear range of 0.2-2 ng/mL (QC tested).

 Siglec-15 ELISA

Immobilized Human Siglec-15, His Tag (Cat. No. SG5-H52H3) at 10 μg/mL (100 μL/well) can bind Neu5Ac(a2-6)GalNAc-PAA-biotin with a linear range of 0.078-0.313 μg/mL (Routinely tested).

  • Background
    Siglec-15 is a DAP12-associated immunoreceptor, which belongs to the immunoglobulin superfamily and SIGLEC (sialic acid binding Ig-like lectin) family. Siglecs are cell surface proteins that bind sialic acid. They are found primarily on the surface of immune cells and are a subset of the I-type lectins. Siglec-15 consisting of immunoglobulin (Ig)-like domains, transmembrane domain and a short cytoplasmic tail. Siglec-15 is that recognizes sialylated glycans and regulates osteoclast differentiation. Siglec-15 is a potential therapeutic target for osteoporosis and plays a conserved regulatory role in the immune system of vertebrates.
  • Clinical and Translational Updates

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