CD22 Antibody (YA1267)(PBS only)

Cat. No.: HY-P81522A: Data Sheet User Guide for Antibodies
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CD22 Antibody (YA1267) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to CD22.

For research use only. We do not sell to patients.

Size		Stock
50 μL		Get quote
100 μL		Get quote

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WB: Western Blot;
IHC-P: Immunohistochemistry-Paraffin;
IHC-F: Immunohistochemistry-Frozen;
ICC/IF: Immunocytochemistry/Immunofluorescence;
IF-Tissue: Immunofluorescence-Tissue;
mIHC: Multiplex Immunohistochemical;
IP: Immunoprecipitation;
ChIP: Chromatin Immunoprecipitation;
FC: Flow Cytometry;
ELISA: Enzyme Linked Immunosorbent Assay

Product Detail
Background
Documentation

Description

CD22 Antibody (YA1267) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to CD22.

Host

Rabbit

Molecular Weight

Predicted band size: 95 kDa;

Observed band size: 130 kDa

Note: Due to possible protein modifications or aggregation, the molecular weight should be confirmed by actual measurement, and the predicted value is for reference only.

Species Reactivity

Human

SwissProt ID

P20273

Gene ID

933 [NCBI]

Immunogen

Recombinant protein of human CD22

Application &
Dilution Ratio

Application	Dilution Ratio
IHC-P IHC-P: Immunohistochemistry-Paraffin	1:100-1:200

Purity	Affinity Purified	Conjugation	Non-conjugated
Isotype	IgG

Appearance

Liquid

Formulation

Supplied in PBS, pH 7.4.

Storage & Stability

Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.

Shipping

Shipping with blue ice.

Background

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 (PubMed:34330755, PubMed:8627166). 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 (PubMed:20172905). 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 (PubMed:8627166). If this negative signaling from is of sufficient strength, apoptosis of the B-cell can be induced (PubMed:20516366)

Subcellular Localization：Cell membrane; Single-pass type I membrane protein

Expression：
Tissue_specificity:B lymphocytes

Isoforms & Post-Translational Modification：P20273 has 5 isomers: P20273-1: 95348 Da (predicted); P20273-2: 75799 Da (predicted); P20273-3: 85675 Da (predicted); P20273-4: 84480 Da (predicted); P20273-5: 75354 Da (predicted).
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

Subunit：Predominantly monomer of isoform CD22-beta. Also found as heterodimer of isoform CD22-beta and a shorter isoform. Interacts with PTPN6/SHP-1, LYN, SYK, PIK3R1/PIK3R2 and PLCG1 upon phosphorylation. Interacts with GRB2, INPP5D and SHC1 upon phosphorylation (By similarity). May form a complex with INPP5D/SHIP, GRB2 and SHC1

Research Field

Immunology

Synonyms

CD22; SIGLEC2; B-cell receptor CD22; B-lymphocyte cell adhesion molecule; BL-CAM; Sialic acid-binding Ig-like lectin 2; Siglec-2; T-cell surface antigen Leu-14; CD antigen CD22

Documentation

User Guide for Antibodies (1077 KB)