Summary

Name CD79A
Full Name B-cell antigen receptor complex-associated protein alpha chain
Synonyms Ig-alpha, MB-1 membrane glycoprotein, Membrane-bound immunoglobulin-associated protein, Surface IgM-associated protein | IGA, MB1
Primary ID P11912
Links - -
Type protein
Relations 9
Pathways B-cell activation
Function Required in cooperation with CD79B for initiation of the signal transduction cascade activated by binding of antigen to the B-cell antigen receptor complex (BCR) which leads to internalization of the complex, trafficking to late endosomes and antigen presentation. Also required for BCR surface expression and for efficient differentiation of pro- and pre-B-cells. Stimulates SYK autophosphorylation and activation. Binds to BLNK, bringing BLNK into proximity with SYK and allowing SYK to phosphorylate BLNK. Also interacts with and increases activity of some Src-family tyrosine kinases. Represses BCR signaling during development of immature B-cells.

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Modifications Tables

Relations

Regulator Mechanism target score
+ up-regulates activity img/direct-activation.png phosphorylation CD79A 0.728
Publications: 1 Organism: In Vitro
Pathways:B-cell activation
+ up-regulates activity img/direct-activation.png phosphorylation CD79A 0.575
Publications: 1 Organism: In Vitro
Pathways:B-cell activation
+ down-regulates quantity by repression img/indirect_inhibition.png transcriptional regulation BCL2L1 0.274
Publications: 1 Organism: Homo Sapiens
+ form complex img/form-complex.png binding BCR-Ml 0.637
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation
+ form complex img/form-complex.png binding BCR-Mk 0.637
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation
+ down-regulates quantity by repression img/indirect_inhibition.png transcriptional regulation CD79A 0.253
Publications: 1 Organism: Mus Musculus
+ form complex img/form-complex.png binding BCR-Dl 0.637
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation
+ form complex img/form-complex.png binding BCR-Dk 0.637
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation
+ down-regulates activity img/direct_inhibition.png dephosphorylation CD79A 0.2
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation