Summary

Name FYN
Full Name Tyrosine-protein kinase Fyn
Synonyms Proto-oncogene Syn, Proto-oncogene c-Fyn, Src-like kinase, SLK, p59-Fyn
Primary ID P06241
Links - -
Type protein
Relations 149
Pathways B-cell activation, Mitochondrial dynamics in T cell exhaustion, T cell activation
Function Non-receptor tyrosine-protein kinase that plays a role in many biological processes including regulation of cell growth and survival, cell adhesion, integrin-mediated signaling, cytoskeletal remodeling, cell motility, immune response and axon guidance. Inactive FYN is phosphorylated on its C-terminal tail within the catalytic domain. Following activation by PKA, the protein subsequently associates with PTK2/FAK1, allowing PTK2/FAK1 phosphorylation, activation and targeting to focal adhesions. Involved in the regulation of cell adhesion and motility through phosphorylation of CTNNB1 (beta-catenin) and CTNND1 (delta-catenin). Regulates cytoskeletal remodeling by phosphorylating several proteins including the actin regulator WAS and the microtubule-associated proteins MAP2 and MAPT. Promotes cell survival by phosphorylating AGAP2/PIKE-A and preventing its apoptotic cleavage. Participates in signal transduction pathways that regulate the integrity of the glomerular slit diaphragm (an essential part of the glomerular filter of the kidney) by phosphorylating several slit diaphragm components including NPHS1, KIRREL1 and TRPC6. Plays a role in neural processes by phosphorylating DPYSL2, a multifunctional adapter protein within the central nervous system, ARHGAP32, a regulator for Rho family GTPases implicated in various neural functions, and SNCA, a small pre-synaptic protein. Participates in the downstream signaling pathways that lead to T-cell differentiation and proliferation following T-cell receptor (TCR) stimulation. Phosphorylates PTK2B/PYK2 in response to T-cell receptor activation. Also participates in negative feedback regulation of TCR signaling through phosphorylation of PAG1, thereby promoting interaction between PAG1 and CSK and recruitment of CSK to lipid rafts. CSK maintains LCK and FYN in an inactive form. Promotes CD28-induced phosphorylation of VAV1. In mast cells, phosphorylates CLNK after activation of immunoglobulin epsilon receptor signaling (By similarity).

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Modifications Tables

Relations

Regulator Mechanism target score
+ down-regulates activity img/direct_inhibition.png phosphorylation H3-3A 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation FYN 0.46
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PTPN6 0.554
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation AGAP2 0.47
Publications: 2 Organism: Homo Sapiens
+ img/unknown.png phosphorylation GRIN2B 0.77
Publications: 8 Organism: In Vitro, Homo Sapiens,
+ up-regulates activity img/direct-activation.png phosphorylation KCND3 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation GRIN2A 0.736
Publications: 3 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation DCC 0.574
Publications: 2 Organism: Mus Musculus
+ up-regulates activity img/direct-activation.png phosphorylation PTPRJ 0.366
Publications: 2 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation ACP1 0.381
Publications: 2 Organism: Chlorocebus Aethiops
+ up-regulates img/direct-activation.png phosphorylation GRIN2A 0.736
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation CAV1 0.723
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation BSG (isoform 2) 0.269
Publications: 2 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation CTNNB1 0.85
Publications: 1 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation GRIN2B 0.77
Publications: 1 Organism: In Vitro
+ down-regulates img/direct_inhibition.png phosphorylation SCN5A 0.293
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation CDK5 0.608
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation MAPT 0.535
Publications: 1 Organism: Homo Sapiens
+ img/unknown.png phosphorylation NMT1 0.381
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png phosphorylation CNN1 0.332
Publications: 2 Organism: Chlorocebus Aethiops
+ up-regulates activity img/direct-activation.png phosphorylation CD300LB 0.309
Publications: 1 Organism: Chlorocebus Aethiops
+ up-regulates activity img/direct-activation.png phosphorylation CD79B 0.674
Publications: 2 Organism: In Vitro
Pathways:B-cell activation
+ up-regulates activity img/direct-activation.png phosphorylation CD79A 0.597
Publications: 1 Organism: In Vitro
Pathways:B-cell activation
+ up-regulates quantity img/direct-activation.png phosphorylation IFITM3 0.452
Publications: 1 Organism: Mus Musculus
+ up-regulates img/direct-activation.png phosphorylation LAT 0.75
Publications: 2 Organism: Homo Sapiens
Pathways:B-cell activation, T cell activation
+ up-regulates quantity by stabilization img/direct-activation.png phosphorylation CTLA4 0.772
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation CHN2 0.2
Publications: 1 Organism: Homo Sapiens
+ img/unknown.png phosphorylation CTLA4 0.772
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation CD300LF 0.344
Publications: 2
+ down-regulates activity img/direct_inhibition.png phosphorylation CNN3 0.331
Publications: 1 Organism: Chlorocebus Aethiops
+ down-regulates activity img/direct_inhibition.png phosphorylation STK11 0.327
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation TRIO 0.2
Publications: 1 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation FYN 0.2
Publications: 4 Organism: In Vitro
Pathways:B-cell activation, T cell activation
+ up-regulates activity img/direct-activation.png phosphorylation FYN 0.581
Publications: 1 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation SLAMF1 0.659
Publications: 3 Organism: Chlorocebus Aethiops
+ up-regulates activity img/direct-activation.png phosphorylation FCGR2A 0.535
Publications: 2 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation WAS 0.561
Publications: 2 Organism: Mus Musculus, Homo Sapiens
Pathways:T cell activation
+ up-regulates activity img/direct-activation.png phosphorylation FCGR2C 0.2
Publications: 1 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation PRKCD 0.597
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation MAPK14 0.491
Publications: 1 Organism: Mus Musculus
+ up-regulates img/direct-activation.png phosphorylation MAPK14 0.491
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation CLIC5 0.295
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation DLG2 0.367
Publications: 1 Organism: In Vitro
+ up-regulates img/direct-activation.png phosphorylation SHC1 0.733
Publications: 4 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation ITPR1 0.487
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation IKBKG 0.355
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PTK2 0.601
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation ARHGAP33 0.46
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation ITCH 0.365
Publications: 1 Organism: Mus Musculus
+ up-regulates img/direct-activation.png phosphorylation FYN 0.2
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation, T cell activation
+ up-regulates activity img/direct-activation.png phosphorylation TXK 0.346
Publications: 1
+ down-regulates img/direct_inhibition.png dephosphorylation FYN 0.324
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png dephosphorylation FYN 0.395
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png dephosphorylation FYN 0.526
Publications: 1 Organism: Homo Sapiens
Tissue: Kidney
+ down-regulates activity img/direct_inhibition.png phosphorylation PRKAA2 0.257
Publications: 1 Organism: Mus Musculus
+ up-regulates activity img/direct-activation.png phosphorylation PTGS2 0.39
Publications: 1 Organism: In Vitro
+ img/unknown.png phosphorylation CD5 0.491
Publications: 2 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation TOM1L1 0.433
Publications: 1 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation PGD 0.2
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation LCK 0.414
Publications: 1 Organism: Homo Sapiens
Pathways:T cell activation
+ up-regulates img/direct-activation.png phosphorylation DLG4 0.562
Publications: 1 Organism: Homo Sapiens
Tissue: Brain
+ up-regulates img/direct-activation.png phosphorylation RPS6KA3 0.325
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png dephosphorylation FYN 0.395
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png dephosphorylation FYN 0.732
Publications: 1 Organism: Homo Sapiens
Pathways:T cell activation
+ up-regulates activity img/direct-activation.png dephosphorylation FYN 0.659
Publications: 1 Organism: Mus Musculus
+ up-regulates img/direct-activation.png dephosphorylation FYN 0.659
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by stabilization img/direct-activation.png phosphorylation ZDHHC5 0.389
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation JUP 0.562
Publications: 1 Organism: Rattus Norvegicus
+ up-regulates activity img/direct-activation.png phosphorylation JUP 0.562
Publications: 1 Organism: Rattus Norvegicus
+ up-regulates activity img/direct-activation.png phosphorylation DCBLD2 0.349
Publications: 7 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png phosphorylation NOX4 0.271
Publications: 1 Organism: In Vitro
+ down-regulates quantity img/direct_inhibition.png phosphorylation NFE2L2 0.401
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation FYB1 0.2
Publications: 2 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation TGFB1I1 0.341
Publications: 1 Organism: Chlorocebus Aethiops
+ up-regulates activity img/direct-activation.png phosphorylation KIRREL1 0.2
Publications: 2 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation MAG 0.424
Publications: 1 Organism: Mus Musculus
+ up-regulates img/direct-activation.png phosphorylation MED28 0.445
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation GRB10 0.378
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PRKACA 0.46
Publications: 1 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation CBL 0.811
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PLCG2 0.576
Publications: 2 Organism: In Vitro
Pathways:B-cell activation
+ up-regulates quantity img/direct-activation.png phosphorylation APP 0.452
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation PTPRT 0.415
Publications: 1
+ up-regulates activity img/direct-activation.png phosphorylation PLEKHG1 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation BCR-Dl 0.636
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation
+ up-regulates activity img/direct-activation.png phosphorylation ZAP70 0.575
Publications: 1 Organism: Homo Sapiens
Pathways:T cell activation
+ up-regulates img/direct-activation.png phosphorylation FYN 0.427
Publications: 2 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation FLT3 0.293
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation LCP2 0.756
Publications: 1 Organism: Homo Sapiens
Pathways:T cell activation
+ up-regulates img/direct-activation.png phosphorylation PRKCQ 0.343
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation BCAR1 0.768
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation NTRK1 0.255
Publications: 1 Organism: Homo Sapiens
+ img/unknown.png phosphorylation Histone H3 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation KHDRBS1 0.544
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PTPRF 0.395
Publications: 1 Organism: Chlorocebus Aethiops
+ up-regulates activity img/direct-activation.png phosphorylation SCN9A 0.363
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity img/direct-activation.png phosphorylation LRP8 0.639
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png binding FYN 0.536
Publications: 1 Organism: Homo Sapiens
Tissue: Muscle, Skeletal Muscle, Kidney
+ up-regulates activity img/direct-activation.png phosphorylation NPHS1 0.74
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation VAV1 0.637
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation BCR-Dk 0.636
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation
+ up-regulates img/direct-activation.png binding FYN 0.38
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation BCR-Mk 0.636
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation
+ up-regulates activity img/direct-activation.png phosphorylation GAB2 0.609
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PAG1 0.704
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation TRPV4 0.349
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation CYTH1 0.395
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation TRPC6 0.504
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation BCR-Ml 0.636
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation
+ down-regulates activity img/direct_inhibition.png phosphorylation DAB1 0.617
Publications: 1 Organism: Homo Sapiens