Human Siglec-2/CD22 protein (Recombinant) (C-His-Avi) {Biotin} (STJP001622)
SPECIFICATIONS
HostHEK293
ConjugationBiotin
ImmunogenDNA sequence encoding Human Siglec-2/CD22 including a C-His-Avi tag was expressed in HEK293 Cells. The recombinant protein was then biotinylated site specific using the AVItag biotinylation technology.
General Information
| Short Description | Recombinant-Human Siglec-2/CD22-C-His-Avi protein was developed from hek293 and has a target region of C-His-Avi. For use in research applications. |
| Host | HEK293 |
| Note | STRICTLY FOR FURTHER RESEARCH USE ONLY (RUO). MUST NOT TO BE USED IN DIAGNOSTIC OR THERAPEUTIC APPLICATIONS. |
Product Properties
| Conjugation | Biotin |
| Dilution Range | Upon receipt centrifuge vial to ensure maximal product extraction, recommended: 20sec, 5K RPM |
| Formulation | Lyophilised from 0.2 µm filtered PBS solution pH7.4. |
| Storage Instruction | The lyophilized protein is stable for at least 1 year from date of receipt at-20°C. |
| Endotoxin | Endotoxin content was assayed using a LAL gel clot method. Endotoxin level was found to be less than 0.1 ng/µg (1EU/µg). |
Target Information
| Gene Symbol | CD22 |
| Gene ID | 933 |
| Uniprot ID | CD22_HUMAN |
| Immunogen | DNA sequence encoding Human Siglec-2/CD22 including a C-His-Avi tag was expressed in HEK293 Cells. The recombinant protein was then biotinylated site specific using the AVItag biotinylation technology. |
| Immunogen Region | Asp20-Arg687 |
Additional Info
| Post Translational Modifications | Phosphorylation of Tyr-762, Tyr-807 and Tyr-822 are involved in binding to SYK, GRB2 and SYK, respectively. Phosphorylation of Tyr-842 is involved in binding to SYK, PLCG2 and PIK3R1/PIK3R2. Phosphorylated on tyrosine residues by LYN. |
| Function | Most highly expressed siglec (sialic acid-binding immunoglobulin-like lectin) on B-cells that plays a role in various aspects of B-cell biology including differentiation, antigen presentation, and trafficking to bone marrow. Binds to alpha 2,6-linked sialic acid residues of surface molecules such as CD22 itself, CD45 and IgM in a cis configuration. Can also bind to ligands on other cells as an adhesion molecule in a trans configuration. Acts as an inhibitory coreceptor on the surface of B-cells and inhibits B-cell receptor induced signaling, characterized by inhibition of the calcium mobilization and cellular activation. Mechanistically, the immunoreceptor tyrosine-based inhibitory motif domain is phosphorylated by the Src kinase LYN, which in turn leads to the recruitment of the protein tyrosine phosphatase 1/PTPN6, leading to the negative regulation of BCR signaling. If this negative signaling from is of sufficient strength, apoptosis of the B-cell can be induced. |
| Protein Name | B-Cell Receptor Cd22B-Lymphocyte Cell Adhesion MoleculeBl-CamSialic Acid-Binding Ig-Like Lectin 2Siglec-2T-Cell Surface Antigen Leu-14Cd Antigen Cd22 |
| Database Links | Reactome: R-HSA-198933Reactome: R-HSA-5690714Reactome: R-HSA-983695 |
| Cellular Localisation | Cell MembraneSingle-Pass Type I Membrane Protein |
| Alternative Protein Names | B-Cell Receptor Cd22 proteinB-Lymphocyte Cell Adhesion Molecule proteinBl-Cam proteinSialic Acid-Binding Ig-Like Lectin 2 proteinSiglec-2 proteinT-Cell Surface Antigen Leu-14 proteinCd Antigen Cd22 proteinCD22 proteinSIGLEC2 protein |
Information sourced from Uniprot.org