Entry
Name
B cell receptor signaling pathway - Desmodus rotundus (common vampire 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
dro04662 B cell receptor signaling pathway
Other DBs
Organism
Desmodus rotundus (common vampire bat) [GN:
dro ]
Gene
112297192 FCGR2B; low affinity immunoglobulin gamma Fc region receptor II-b [KO:K12560 ]
112298813 RAC3; ras-related C3 botulinum toxin substrate 3 isoform X1 [KO:K07861 ]
112299448 PIK3CD; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit delta isoform [KO:K00922 ] [EC:2.7.1.153 ]
112300474 CHUK; LOW QUALITY PROTEIN: inhibitor of nuclear factor kappa-B kinase subunit alpha [KO:K04467 ] [EC:2.7.11.10 ]
112300806 NFATC3; nuclear factor of activated T-cells, cytoplasmic 3 isoform X1 [KO:K17333 ]
112303992 NFATC2; nuclear factor of activated T-cells, cytoplasmic 2 [KO:K17332 ]
112305224 PIK3R2; phosphatidylinositol 3-kinase regulatory subunit beta [KO:K02649 ]
112305248 PPP3CC; serine/threonine-protein phosphatase 2B catalytic subunit gamma isoform isoform X1 [KO:K04348 ] [EC:3.1.3.16 ]
112305449 PPP3CB; serine/threonine-protein phosphatase 2B catalytic subunit beta isoform isoform X1 [KO:K04348 ] [EC:3.1.3.16 ]
112307667 PIK3CA; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform [KO:K00922 ] [EC:2.7.1.153 ]
112310002 PIK3CB; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit beta isoform isoform X1 [KO:K00922 ] [EC:2.7.1.153 ]
112316584 CD79B; B-cell antigen receptor complex-associated protein beta chain [KO:K06507 ]
112317655 DAPP1; dual adapter for phosphotyrosine and 3-phosphotyrosine and 3-phosphoinositide [KO:K12229 ]
112317863 PPP3CA; serine/threonine-protein phosphatase 2B catalytic subunit alpha isoform [KO:K04348 ] [EC:3.1.3.16 ]
112317867 NFKB1; nuclear factor NF-kappa-B p105 subunit isoform X1 [KO:K02580 ]
112319699 CARD11; caspase recruitment domain-containing protein 11 [KO:K07367 ]
112320195 CD79A; B-cell antigen receptor complex-associated protein alpha chain [KO:K06506 ]
112321016 PIK3R1; phosphatidylinositol 3-kinase regulatory subunit alpha isoform X1 [KO:K02649 ]
112322654 NFATC1; nuclear factor of activated T-cells, cytoplasmic 1 [KO:K04446 ]
112322863 MALT1; mucosa-associated lymphoid tissue lymphoma translocation protein 1 [KO:K07369 ] [EC:3.4.22.-]
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
dro04610 Complement and coagulation cascades
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KO pathway