CD22 Protein (Fc Tag)

Catalog No. ABIN7320025

This Recombinant CD22 protein is expressed in HEK-293 Cells.

Quick Overview for CD22 Protein (Fc Tag) (ABIN7320025)

Target: CD22 (CD22 Molecule (CD22))

Protein Type: Recombinant

Origin: Mouse

Source: HEK-293 Cells

Purity: > 95 % as determined by SDS-PAGE

Product Details

Purification tag / Conjugate: This CD22 protein is labelled with Fc Tag.

Purpose: Recombinant Mouse Siglec-2/CD22 Protein (Fc Tag)

Sequence: Met1-Arg708

Characteristics: A DNA sequence encoding the mouse CD22 (BAE33829.1)(Met1-Arg708) was expressed with the Fc region of human IgG1 at the C-terminus.

Endotoxin Level: < 1.0 EU per μg of the protein as determined by the LAL method.

Application Details

Restrictions: For Research Use only

Handling

Format: Lyophilized

Reconstitution: Please refer to the printed manual for detailed information.

Buffer: Lyophilized from sterile PBS, pH 7.4

Storage: 4 °C,-20 °C,-80 °C

Storage Comment: Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.

Target Details

Target: CD22 (CD22 Molecule (CD22))

Alternative Name: Siglec-2/CD22

Background:

Background: CD22 is a member of the immunoglobulin superfamily, SIGLEC family of lectins. It is first expressed in the cytoplasm of pro-B and pre-B cells, and on the surface as B cells mature to become IgD+. CD22 serves as an adhesion receptor for sialic acid-bearing ligands expressed on erythrocytes and all leukocyte classes. In addition to its potential role as a mediator of intercellular interactions, signal transduction through CD22 can activate B cells and modulate antigen receptor signaling in vitro. The phenotype of CD22-deficient mice suggests that CD22 is primarily involved in the generation of mature B cells within the bone marrow, blood, and marginal zones of lymphoid tissues. CD22 recruits the tyrosine phosphatase Src homology 2 domain-containing phosphatase 1 (SHP-1) to immunoreceptor tyrosine-based inhibitory motifs (ITIMs) and inhibits B-cell receptor (BCR)-induced Ca2+ signaling on normal B cells. CD22 interacts specifically with ligands carrying alpha2-6-linked sialic acids. As an inhibitory coreceptor of the B-cell receptor (BCR), CD22 plays a critical role in establishing signalling thresholds for B-cell activation. Like other coreceptors, the ability of CD22 to modulate B-cell signalling is critically dependent upon its proximity to the BCR, and this in turn is governed by the binding of its extracellular domain to alpha2,6-linked sialic acid ligands. However, genetic studies in mice reveal that some CD22 functions are regulated by ligand binding, whereas other functions are ligand-independent and may only require expression of an intact CD22 cytoplasmic domain at the B-cell surface. CD19 regulates CD22 phosphorylation by augmenting Lyn kinase activity, while CD22 inhibits CD19 phosphorylation via SHP-1.Immune Checkpoint   Immunotherapy   Cancer Immunotherapy   Targeted Therapy

Synonym: A530093D23;Lyb-8;Lyb8

Molecular Weight: 104.3 kDa