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CD22

CD22 molecule

Mediates B-cell B-cell interactions. May be involved in the localization of B-cells in lymphoid tissues. Binds sialylated glycoproteins; one of which is CD45. Preferentially binds to alpha-2,6-linked sialic acid. The sialic acid recognition site can be masked by cis interactions with sialic acids on the same cell surface. Upon ligand induced tyrosine phosphorylation in the immune response seems to be involved in regulation of B-cell antigen receptor signaling. Plays a role in positive regulation through interaction with Src family tyrosine kinases and may also act as an inhibitory receptor by recruiting cytoplasmic phosphatases via their SH2 domains that block signal transduction through dephosphorylation of signaling molecules.

Gene Name: CD22 molecule
Family/Subfamily: Immunoglobulin , not assigned-Immunoglobulin
Synonyms: CD22, CD22 molecule, CD22 antigen, SIGLEC2, SIGLEC-2, T-cell surface antigen Leu-14, B-cell receptor CD22, BL-CAM
Target Sequences: NM_001771 NP_001762.2 P20273

Publications (1)

1
Epitope mapping and key amino acid identification of anti-CD22 immunotoxin CAT-8015 using hybrid -lactamase display. Bannister D, Popovic B, Sridharan S, Giannotta F, File P, Yilmaz N, Minter R. Protein engineering, design & selection : PEDS. 2011 24:351-60. (IP) [PubMed:21159620] [PMC:PMC3049344]

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The data on this page has been compiled from LifeSpan internal sources, the National Center for Biotechnology Information (NCBI), and The Universal Protein Resource (UniProt).