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 0.458
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PTPN6 0.549
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation AGAP2 0.466
Publications: 2 Organism: Homo Sapiens
+ img/unknown.png phosphorylation GRIN2B 0.765
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 0.732
Publications: 3 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation DCC 0.569
Publications: 2 Organism: Mus Musculus
+ up-regulates activity img/direct-activation.png phosphorylation PTPRJ 0.365
Publications: 2 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation ACP1 0.383
Publications: 2 Organism: Chlorocebus Aethiops
+ up-regulates img/direct-activation.png phosphorylation GRIN2A 0.732
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation CAV1 0.718
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 0.853
Publications: 1 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation GRIN2B 0.765
Publications: 1 Organism: In Vitro
+ down-regulates img/direct_inhibition.png phosphorylation SCN5A 0.292
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 0.534
Publications: 1 Organism: Homo Sapiens
+ img/unknown.png phosphorylation NMT1 0.383
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png phosphorylation CNN1 0.335
Publications: 2 Organism: Chlorocebus Aethiops
+ up-regulates activity img/direct-activation.png phosphorylation CD300LB 0.306
Publications: 1 Organism: Chlorocebus Aethiops
+ up-regulates activity img/direct-activation.png phosphorylation CD79B 0.669
Publications: 2 Organism: In Vitro
Pathways:B-cell activation
+ up-regulates activity img/direct-activation.png phosphorylation CD79A 0.594
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 0.747
Publications: 2 Organism: Homo Sapiens
Pathways:B-cell activation, T cell activation
+ up-regulates quantity by stabilization img/direct-activation.png phosphorylation CTLA4 0.769
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 0.769
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation CD300LF 0.341
Publications: 2
+ down-regulates activity img/direct_inhibition.png phosphorylation CNN3 0.335
Publications: 1 Organism: Chlorocebus Aethiops
+ down-regulates activity img/direct_inhibition.png phosphorylation STK11 0.326
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 0.657
Publications: 3 Organism: Chlorocebus Aethiops
+ up-regulates activity img/direct-activation.png phosphorylation FCGR2A 0.533
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 0.598
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation MAPK14 0.487
Publications: 1 Organism: Mus Musculus
+ up-regulates img/direct-activation.png phosphorylation MAPK14 0.487
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation CLIC5 0.298
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation DLG2 0.366
Publications: 1 Organism: In Vitro
+ up-regulates img/direct-activation.png phosphorylation SHC1 0.73
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 0.358
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PTK2 0.603
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation ARHGAP33 0.462
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png dephosphorylation FYN 0.324
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png dephosphorylation FYN 0.398
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png dephosphorylation FYN 0.527
Publications: 1 Organism: Homo Sapiens
Tissue: Kidney
+ up-regulates activity img/direct-activation.png phosphorylation TXK 0.349
Publications: 1
+ up-regulates img/direct-activation.png phosphorylation FYN 0.2
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation, T cell activation
+ down-regulates activity img/direct_inhibition.png phosphorylation ITCH 0.368
Publications: 1 Organism: Mus Musculus
+ down-regulates activity img/direct_inhibition.png phosphorylation PRKAA2 0.258
Publications: 1 Organism: Mus Musculus
+ up-regulates activity img/direct-activation.png phosphorylation PTGS2 0.386
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 0.434
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 0.41
Publications: 1 Organism: Homo Sapiens
Pathways:T cell activation
+ up-regulates img/direct-activation.png phosphorylation DLG4 0.561
Publications: 1 Organism: Homo Sapiens
Tissue: Brain
+ up-regulates img/direct-activation.png phosphorylation RPS6KA3 0.327
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png dephosphorylation FYN 0.398
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png dephosphorylation FYN 0.658
Publications: 1 Organism: Mus Musculus
+ up-regulates activity img/direct-activation.png dephosphorylation FYN 0.729
Publications: 1 Organism: Homo Sapiens
Pathways:T cell activation
+ up-regulates img/direct-activation.png dephosphorylation FYN 0.658
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by stabilization img/direct-activation.png phosphorylation ZDHHC5 0.386
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation JUP 0.562
Publications: 1 Organism: Rattus Norvegicus
+ down-regulates activity img/direct_inhibition.png phosphorylation JUP 0.562
Publications: 1 Organism: Rattus Norvegicus
+ up-regulates activity img/direct-activation.png phosphorylation DCBLD2 0.352
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 0.398
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 0.339
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 0.426
Publications: 1 Organism: Mus Musculus
+ up-regulates img/direct-activation.png phosphorylation MED28 0.446
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation GRB10 0.381
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PRKACA 0.458
Publications: 1 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation CBL 0.813
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PLCG2 0.575
Publications: 2 Organism: In Vitro
Pathways:B-cell activation
+ up-regulates quantity img/direct-activation.png phosphorylation APP 0.448
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation PTPRT 0.413
Publications: 1
+ up-regulates img/direct-activation.png phosphorylation FYN 0.424
Publications: 2 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation ZAP70 0.574
Publications: 1 Organism: Homo Sapiens
Pathways:T cell activation
+ up-regulates activity img/direct-activation.png phosphorylation TRPC6 0.504
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PLEKHG1 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation GAB2 0.6
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png binding FYN 0.382
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation CYTH1 0.393
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation BCR-Ml 0.632
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation
+ up-regulates img/direct-activation.png phosphorylation VAV1 0.635
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation TRPV4 0.351
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation DAB1 0.611
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PAG1 0.702
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation BCR-Dk 0.632
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation
+ up-regulates activity img/direct-activation.png phosphorylation BCAR1 0.764
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation FLT3 0.292
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation PRKCQ 0.346
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation SCN9A 0.361
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation BCR-Dl 0.632
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation
+ down-regulates img/direct_inhibition.png phosphorylation LCP2 0.754
Publications: 1 Organism: Homo Sapiens
Pathways:T cell activation
+ up-regulates activity img/direct-activation.png phosphorylation PTPRF 0.398
Publications: 1 Organism: Chlorocebus Aethiops
+ up-regulates activity img/direct-activation.png phosphorylation KHDRBS1 0.544
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png binding FYN 0.535
Publications: 1 Organism: Homo Sapiens
Tissue: Muscle, Skeletal Muscle, Kidney
+ up-regulates quantity img/direct-activation.png phosphorylation LRP8 0.631
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 NTRK1 0.253
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation NPHS1 0.736
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation BCR-Mk 0.632
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation