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Invitrogen
CD22 Monoclonal Antibody (2D6), PE-Cyanine5
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Product Details
MA5-28653
Product Specifications
Species Reactivity
Mouse
Host/Isotype
Rat
/ IgG1, kappa
Class
Monoclonal
Type
Antibody
Clone
2D6
Immunogen
Splenic lymphocyte plasma membranes from CBA x C57 F1 mice
Conjugate
Excitation/Emission Max
568/666 nm
View spectra
Form
Liquid
Concentration
0.1 mg/mL
Purification
purified
Storage buffer
PBS, pH 7.1, with proprietary stabilizer
Contains
<0.1% sodium azide
Storage conditions
4°C, store in dark, DO NOT FREEZE!
Shipping conditions
Ambient (domestic); Wet ice (international)
RRID
Target Information
CD22, also known as BL-CAM, is a type I transmembrane glycoprotein composed of two polypeptide chains, CD22alpha and CD22beta, with molecular weights of 130 and 140 kDa, respectively. These chains are produced by alternative splicing of the CD22 gene. CD22 is prominently expressed on mature B cells and B cell lymphomas, including hairy cell leukemia, diffuse large B-cell lymphoma, and nodular lymphocyte predominance Hodgkin's lymphoma, but is negative in classical Hodgkin's lymphoma. The extracellular portion of CD22 contains seven Ig-like domains that preferentially bind alpha2,6-linked sialic acid moieties found on epithelial, endothelial, B, and T cells. This binding can be masked by cis interactions with sialic acids on the same cell surface. CD22 expression is limited to late stages of B-cell differentiation, making it useful for phenotyping mature leukemias. Intracellularly, CD22 features six tyrosine residues within immunotyrosine-based inhibitory motifs (ITIM) and activation-like motifs. These residues are phosphorylated upon B-cell receptor engagement, allowing CD22 to regulate B-cell receptor signaling. CD22 participates in positive regulation through interactions with Src family tyrosine kinases and acts as an inhibitory receptor by recruiting cytoplasmic phosphatases via SH2 domains, which block signal transduction through dephosphorylation of signaling molecules. CD22's role in both positive and negative regulation of B-cell signaling, along with its specific expression pattern, makes it a valuable marker for antibody customers interested in B-cell-related research and diagnostics.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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Bioinformatics
Protein Aliases: B-cell receptor CD22; B-lymphocyte cell adhesion molecule; B-lymphocyte cell adhesion molecule (BL-CAM); BL-CAM; CD22; FLJ22814; Lectin 2; Leu-14; MGC130020; Sialic acid-binding Ig-like lectin 2; Sialic acid-binding Ig-like lectin 2 (Siglec-2); Siglec-2; T-cell surface antigen Leu-14
Gene Aliases: A530093D23; Cd22; Lyb-8; Lyb8; Siglec2
UniProt ID: (Mouse) P35329
Entrez Gene ID: (Mouse) 12483
Performance Guarantee
If an Invitrogen™ antibody doesn't perform as described on our website or datasheet,we'll replace the product at no cost to you, or provide you with a credit for a future purchase.*
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