Entry
Name
B cell receptor signaling pathway - Hipposideros armiger (great roundleaf bat)
Description
B cells are an important component of adaptive immunity. They produce and secrete millions of different antibody molecules, each of which recognizes a different (foreign) antigen. The B cell receptor (BCR) is an integral membrane protein complex that is composed of two immunoglobulin (Ig) heavy chains, two Ig light chains and two heterodimers of Ig-alpha and Ig-beta. After BCR ligation by antigen, three main protein tyrosine kinases (PTKs) -the SRC-family kinase LYN, SYK and the TEC-family kinase BTK- are activated. Phosphatidylinositol 3-kinase (PI3K) and phospholipase C-gamma 2 (PLC-gamma 2) are important downstream effectors of BCR signalling. This signalling ultimately results in the expression of immediate early genes that further activate the expression of other genes involved in B cell proliferation, differentiation and Ig production as well as other processes.
Class
Organismal Systems; Immune system
BRITE hierarchy
Pathway map
hai04662 B cell receptor signaling pathway
Ortholog table
Other DBs
Organism
Hipposideros armiger (great roundleaf bat) [GN:
hai ]
Gene
109374447 CD79A; B-cell antigen receptor complex-associated protein alpha chain [KO:K06506 ]
109380249 CD79B; B-cell antigen receptor complex-associated protein beta chain isoform X1 [KO:K06507 ]
109392948 DAPP1; dual adapter for phosphotyrosine and 3-phosphotyrosine and 3-phosphoinositide [KO:K12229 ]
109381168 VAV2; guanine nucleotide exchange factor VAV2 isoform X1 [KO:K05730 ]
109375381 guanine nucleotide exchange factor VAV3-like isoform X1 [KO:K05730 ]
109393041 RAC3; ras-related C3 botulinum toxin substrate 3 isoform X1 [KO:K07861 ]
109372443 PPP3CB; serine/threonine-protein phosphatase 2B catalytic subunit beta isoform isoform X1 [KO:K04348 ] [EC:3.1.3.16 ]
109392365 PPP3CA; serine/threonine-protein phosphatase 2B catalytic subunit alpha isoform isoform X1 [KO:K04348 ] [EC:3.1.3.16 ]
109375958 PPP3CC; serine/threonine-protein phosphatase 2B catalytic subunit gamma isoform isoform X1 [KO:K04348 ] [EC:3.1.3.16 ]
109383198 NFATC1; nuclear factor of activated T-cells, cytoplasmic 1 isoform X1 [KO:K04446 ]
109381836 NFATC2; nuclear factor of activated T-cells, cytoplasmic 2 [KO:K17332 ]
109389408 NFATC3; nuclear factor of activated T-cells, cytoplasmic 3 isoform X1 [KO:K17333 ]
109383688 GRB2; growth factor receptor-bound protein 2 isoform X1 [KO:K04364 ]
109380126 CARD11; caspase recruitment domain-containing protein 11 isoform X1 [KO:K07367 ]
109381749 MALT1; mucosa-associated lymphoid tissue lymphoma translocation protein 1 isoform X1 [KO:K07369 ] [EC:3.4.22.-]
109372541 NFKB1; nuclear factor NF-kappa-B p105 subunit isoform X1 [KO:K02580 ]
109382484 PIK3R2; phosphatidylinositol 3-kinase regulatory subunit beta [KO:K02649 ]
109395865 PIK3R1; phosphatidylinositol 3-kinase regulatory subunit alpha isoform X1 [KO:K02649 ]
109373811 PIK3R3; phosphatidylinositol 3-kinase regulatory subunit gamma isoform X1 [KO:K02649 ]
109381238 PIK3CD; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit delta isoform [KO:K00922 ] [EC:2.7.1.153 ]
109394108 PIK3CB; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit beta isoform [KO:K00922 ] [EC:2.7.1.153 ]
109372681 PIK3CA; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform isoform X1 [KO:K00922 ] [EC:2.7.1.153 ]
109392296 FCGR2B; low affinity immunoglobulin gamma Fc region receptor II-b isoform X1 [KO:K12560 ]
109372459 leukocyte immunoglobulin-like receptor subfamily A member 5 [KO:K06512 ]
109372492 leukocyte immunoglobulin-like receptor subfamily A member 5 isoform X1 [KO:K06512 ]
109378735 leukocyte immunoglobulin-like receptor subfamily A member 5 [KO:K06512 ]
109372464 leukocyte immunoglobulin-like receptor subfamily A member 6 [KO:K06512 ]
109372490 leukocyte immunoglobulin-like receptor subfamily B member 3 isoform X1 [KO:K06512 ]
Compound
C01245 D-myo-Inositol 1,4,5-trisphosphate
C05981 Phosphatidylinositol-3,4,5-trisphosphate
Reference
Authors
Niiro H, Clark EA.
Title
Regulation of B-cell fate by antigen-receptor signals.
Journal
Reference
Authors
Kurosaki T.
Title
Genetic analysis of B cell antigen receptor signaling.
Journal
Reference
Authors
Nitschke L.
Title
The role of CD22 and other inhibitory co-receptors in B-cell activation.
Journal
Reference
Authors
Morgan BP, Marchbank KJ, Longhi MP, Harris CL, Gallimore AM.
Title
Complement: central to innate immunity and bridging to adaptive responses.
Journal
Reference
Authors
Kurosaki T.
Title
Regulation of B-cell signal transduction by adaptor proteins.
Journal
Reference
Authors
Nitschke L, Tsubata T.
Title
Molecular interactions regulate BCR signal inhibition by CD22 and CD72.
Journal
Reference
Authors
Jumaa H, Hendriks RW, Reth M.
Title
B cell signaling and tumorigenesis.
Journal
Reference
Authors
Rickert RC.
Title
Regulation of B lymphocyte activation by complement C3 and the B cell coreceptor complex.
Journal
Reference
Authors
Zouali M, Sarmay G
Title
B lymphocyte signaling pathways in systemic autoimmunity: implications for pathogenesis and treatment.
Journal
Reference
Authors
Chiles TC.
Title
Regulation and function of cyclin D2 in B lymphocyte subsets.
Journal
Reference
Authors
Allam A, Marshall AJ
Title
Role of the adaptor proteins Bam32, TAPP1 and TAPP2 in lymphocyte activation.
Journal
Reference
Authors
Gold MR
Title
To make antibodies or not: signaling by the B-cell antigen receptor.
Journal
Reference
Authors
Fu C, Turck CW, Kurosaki T, Chan AC
Title
BLNK: a central linker protein in B cell activation.
Journal
Reference
Authors
Okada T, Maeda A, Iwamatsu A, Gotoh K, Kurosaki T
Title
BCAP: the tyrosine kinase substrate that connects B cell receptor to phosphoinositide 3-kinase activation.
Journal
Reference
Authors
Shinohara H, Maeda S, Watarai H, Kurosaki T
Title
IkappaB kinase beta-induced phosphorylation of CARMA1 contributes to CARMA1 Bcl10 MALT1 complex formation in B cells.
Journal
Related pathway
hai04610 Complement and coagulation cascades
hai04810 Regulation of actin cytoskeleton
KO pathway
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