Linked Life Data

CPATH-284

Source:http://cbio.mskcc.org/cpath#CPATH-284

Statements in which the resource exists.
SubjectPredicateObjectContext
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cpath:CPATH-284http://www.biopax.org/relea...B-cell receptor CD22lld:biogrid
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cpath:CPATH-284http://www.biopax.org/relea...T-cell surface antigen Leu-14lld:biogrid
cpath:CPATH-284http://www.biopax.org/relea...B-lymphocyte cell adhesion moleculelld:biogrid
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cpath:CPATH-284http://www.biopax.org/relea...Sialic acid-binding Ig-like lectin 2lld:biogrid
cpath:CPATH-284http://www.biopax.org/relea...FUNCTION: 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. 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. SUBCELLULAR LOCATION: Cell membrane; Single-pass type I membrane protein. ALTERNATIVE PRODUCTS: Event=Alternative splicing; Named isoforms=2; Comment=Additional isoforms seem to exist; Name=CD22-beta; IsoId=P20273-1; Sequence=Displayed; Name=CD22-alpha; IsoId=P20273-2; Sequence=VSP_002531; TISSUE SPECIFICITY: B-lymphocytes. DOMAIN: Contains 4 copies of a cytoplasmic motif that is referred to as the immunoreceptor tyrosine-based inhibitor motif (ITIM). This motif is involved in modulation of cellular responses. The phosphorylated ITIM motif can bind the SH2 domain of several SH2- containing phosphatases. PTM: 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. PTM: Phosphorylated on tyrosine residues by LYN (By similarity). SIMILARITY: Belongs to the immunoglobulin superfamily. SIGLEC (sialic acid binding Ig-like lectin) family. SIMILARITY: Contains 6 Ig-like C2-type (immunoglobulin-like) domains. SIMILARITY: Contains 1 Ig-like V-type (immunoglobulin-like) domain. SEQUENCE CAUTION: Sequence=CAA36988.1; Type=Frameshift; Positions=806; WEB RESOURCE: Name=Functional Glycomics Gateway - Glycan Binding; Note=Siglec-2 [3 Fc Domains]; URL="http://www.functionalglycomics.org/glycomics/GBPServlet?&operationType=view&cbpId=cbp_hum_Itlect_00001"; WEB RESOURCE: Name=Functional Glycomics Gateway - Glycan Binding; Note=Siglec-2; URL="http://www.functionalglycomics.org/glycomics/GBPServlet?&operationType=view&cbpId=cbp_hum_Itlect_269"; GENE SYNONYMS: SIGLEC2. COPYRIGHT: Protein annotation is derived from the UniProt Consortium (http://www.uniprot.org/). Distributed under the Creative Commons Attribution-NoDerivs License.lld:biogrid
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