KEGG   PATHWAY: dro04662
dro04662                    Pathway                                

B cell receptor signaling pathway - Desmodus rotundus (common vampire bat)
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.
Organismal Systems; Immune system
Pathway map
dro04662  B cell receptor signaling pathway

Other DBs
GO: 0050853
Desmodus rotundus (common vampire bat) [GN:dro]
112320195  CD79A; B-cell antigen receptor complex-associated protein alpha chain [KO:K06506]
112316584  CD79B; B-cell antigen receptor complex-associated protein beta chain [KO:K06507]
112315403  LYN; tyrosine-protein kinase Lyn isoform X1 [KO:K05854] [EC:]
112307282  SYK; tyrosine-protein kinase SYK [KO:K05855] [EC:]
112321325  BTK; tyrosine-protein kinase BTK [KO:K07370] [EC:]
112317655  DAPP1; dual adapter for phosphotyrosine and 3-phosphotyrosine and 3-phosphoinositide [KO:K12229]
112307069  BLNK; B-cell linker protein [KO:K07371]
112313799  VAV3; guanine nucleotide exchange factor VAV3 [KO:K05730]
112312402  VAV1; proto-oncogene vav [KO:K05730]
112306573  VAV2; guanine nucleotide exchange factor VAV2 [KO:K05730]
112319549  RAC1; ras-related C3 botulinum toxin substrate 1 [KO:K04392]
112321719  RAC2; ras-related C3 botulinum toxin substrate 2 [KO:K07860]
112298813  RAC3; ras-related C3 botulinum toxin substrate 3 isoform X1 [KO:K07861]
112300725  PLCG2; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase gamma-2 [KO:K05859] [EC:]
112305449  PPP3CB; serine/threonine-protein phosphatase 2B catalytic subunit beta isoform isoform X1 [KO:K04348] [EC:]
112317863  PPP3CA; serine/threonine-protein phosphatase 2B catalytic subunit alpha isoform [KO:K04348] [EC:]
112305248  PPP3CC; serine/threonine-protein phosphatase 2B catalytic subunit gamma isoform isoform X1 [KO:K04348] [EC:]
112297858  PPP3R1; calcineurin subunit B type 1 [KO:K06268]
112304508  PPP3R2; calcineurin subunit B type 2 [KO:K06268]
112322654  NFATC1; nuclear factor of activated T-cells, cytoplasmic 1 [KO:K04446]
112303992  NFATC2; nuclear factor of activated T-cells, cytoplasmic 2 [KO:K17332]
112300806  NFATC3; nuclear factor of activated T-cells, cytoplasmic 3 isoform X1 [KO:K17333]
112298645  GRB2; growth factor receptor-bound protein 2 [KO:K04364]
112297971  SOS1; son of sevenless homolog 1 isoform X1 [KO:K03099]
112310995  SOS2; son of sevenless homolog 2 [KO:K03099]
112297824  RASGRP3; ras guanyl-releasing protein 3 [KO:K12362]
112317099  HRAS; GTPase HRas isoform X1 [KO:K02833]
112318275  KRAS; LOW QUALITY PROTEIN: GTPase KRas [KO:K07827]
112304041  LOW QUALITY PROTEIN: GTPase KRas-like [KO:K07827]
112313707  NRAS; GTPase NRas [KO:K07828]
112301126  RAF1; RAF proto-oncogene serine/threonine-protein kinase isoform X1 [KO:K04366] [EC:]
112311345  MAP2K1; dual specificity mitogen-activated protein kinase kinase 1 [KO:K04368] [EC:]
112312483  MAP2K2; dual specificity mitogen-activated protein kinase kinase 2 [KO:K04369] [EC:]
112304801  MAPK3; mitogen-activated protein kinase 3 [KO:K04371] [EC:]
112301746  MAPK1; mitogen-activated protein kinase 1 [KO:K04371] [EC:]
112311412  FOS; proto-oncogene c-Fos [KO:K04379]
112314642  JUN; LOW QUALITY PROTEIN: transcription factor AP-1 [KO:K04448]
112304830  PRKCB; protein kinase C beta type [KO:K19662] [EC:]
112319699  CARD11; caspase recruitment domain-containing protein 11 [KO:K07367]
112309355  BCL10; B-cell lymphoma/leukemia 10 [KO:K07368]
112322863  MALT1; mucosa-associated lymphoid tissue lymphoma translocation protein 1 [KO:K07369] [EC:3.4.22.-]
112300474  CHUK; LOW QUALITY PROTEIN: inhibitor of nuclear factor kappa-B kinase subunit alpha [KO:K04467] [EC:]
112321547  IKBKB; inhibitor of nuclear factor kappa-B kinase subunit beta isoform X1 [KO:K07209] [EC:]
112296261  IKBKG; NF-kappa-B essential modulator isoform X1 [KO:K07210]
112317867  NFKB1; nuclear factor NF-kappa-B p105 subunit isoform X1 [KO:K02580]
112317202  RELA; transcription factor p65 [KO:K04735]
112296519  NFKBIA; NF-kappa-B inhibitor alpha [KO:K04734]
112320245  NFKBIB; NF-kappa-B inhibitor beta [KO:K02581]
112302226  NFKBIE; NF-kappa-B inhibitor epsilon [KO:K05872]
112317296  CD81; CD81 antigen [KO:K06508]
112304832  CD19; B-lymphocyte antigen CD19 [KO:K06465]
112321016  PIK3R1; phosphatidylinositol 3-kinase regulatory subunit alpha isoform X1 [KO:K02649]
112305224  PIK3R2; phosphatidylinositol 3-kinase regulatory subunit beta [KO:K02649]
112314466  phosphatidylinositol 3-kinase regulatory subunit gamma [KO:K02649]
112310002  PIK3CB; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit beta isoform isoform X1 [KO:K00922] [EC:]
112299448  PIK3CD; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit delta isoform [KO:K00922] [EC:]
112307667  PIK3CA; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform [KO:K00922] [EC:]
112311458  AKT1; RAC-alpha serine/threonine-protein kinase isoform X1 [KO:K04456] [EC:]
112318919  AKT3; RAC-gamma serine/threonine-protein kinase [KO:K04456] [EC:]
112320130  AKT2; RAC-beta serine/threonine-protein kinase [KO:K04456] [EC:]
112320540  GSK3B; glycogen synthase kinase-3 beta isoform X1 [KO:K03083] [EC:]
112297192  FCGR2B; low affinity immunoglobulin gamma Fc region receptor II-b [KO:K12560]
112307792  INPP5D; phosphatidylinositol 3,4,5-trisphosphate 5-phosphatase 1 [KO:K03084] [EC:]
112315920  INPPL1; phosphatidylinositol 3,4,5-trisphosphate 5-phosphatase 2 [KO:K15909] [EC:]
112313555  LOW QUALITY PROTEIN: leukocyte immunoglobulin-like receptor subfamily A member 6 [KO:K06512]
112320238  CD22; B-cell receptor CD22 isoform X1 [KO:K06467]
112304393  CD72; B-cell differentiation antigen CD72 [KO:K06504]
112321823  PTPN6; tyrosine-protein phosphatase non-receptor type 6 isoform X1 [KO:K05697] [EC:]
112307095  PIK3AP1; phosphoinositide 3-kinase adapter protein 1 [KO:K12230]
C00076  Calcium cation
C00165  Diacylglycerol
C01245  D-myo-Inositol 1,4,5-trisphosphate
C05981  Phosphatidylinositol-3,4,5-trisphosphate
Niiro H, Clark EA.
Regulation of B-cell fate by antigen-receptor signals.
Nat Rev Immunol 2:945-56 (2002)
Kurosaki T.
Genetic analysis of B cell antigen receptor signaling.
Annu Rev Immunol 17:555-92 (1999)
Nitschke L.
The role of CD22 and other inhibitory co-receptors in B-cell activation.
Curr Opin Immunol 17:290-7 (2005)
Morgan BP, Marchbank KJ, Longhi MP, Harris CL, Gallimore AM.
Complement: central to innate immunity and bridging to adaptive responses.
Immunol Lett 97:171-9 (2005)
Kurosaki T.
Regulation of B-cell signal transduction by adaptor proteins.
Nat Rev Immunol 2:354-63 (2002)
Nitschke L, Tsubata T.
Molecular interactions regulate BCR signal inhibition by CD22 and CD72.
Trends Immunol 25:543-50 (2004)
Jumaa H, Hendriks RW, Reth M.
B cell signaling and tumorigenesis.
Annu Rev Immunol 23:415-45 (2005)
Rickert RC.
Regulation of B lymphocyte activation by complement C3 and the B cell coreceptor complex.
Curr Opin Immunol 17:237-43 (2005)
Zouali M, Sarmay G
B lymphocyte signaling pathways in systemic autoimmunity: implications for pathogenesis and treatment.
Arthritis Rheum 50:2730-41 (2004)
Chiles TC.
Regulation and function of cyclin D2 in B lymphocyte subsets.
J Immunol 173:2901-7 (2004)
Allam A, Marshall AJ
Role of the adaptor proteins Bam32, TAPP1 and TAPP2 in lymphocyte activation.
Immunol Lett 97:7-17 (2005)
Gold MR
To make antibodies or not: signaling by the B-cell antigen receptor.
Trends Pharmacol Sci 23:316-24 (2002)
Fu C, Turck CW, Kurosaki T, Chan AC
BLNK: a central linker protein in B cell activation.
Immunity 9:93-103 (1998)
Okada T, Maeda A, Iwamatsu A, Gotoh K, Kurosaki T
BCAP: the tyrosine kinase substrate that connects B cell receptor to phosphoinositide 3-kinase activation.
Immunity 13:817-27 (2000)
Shinohara H, Maeda S, Watarai H, Kurosaki T
IkappaB kinase beta-induced phosphorylation of CARMA1 contributes to CARMA1 Bcl10 MALT1 complex formation in B cells.
J Exp Med 204:3285-93 (2007)
dro04010  MAPK signaling pathway
dro04020  Calcium signaling pathway
dro04064  NF-kappa B signaling pathway
dro04120  Ubiquitin mediated proteolysis
dro04151  PI3K-Akt signaling pathway
dro04610  Complement and coagulation cascades
dro04810  Regulation of actin cytoskeleton
KO pathway

DBGET integrated database retrieval system