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 0.445
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PTPN6 0.544
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation AGAP2 0.457
Publications: 2 Organism: Homo Sapiens
+ img/unknown.png phosphorylation GRIN2B 0.769
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 0.733
Publications: 3 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation DCC 0.566
Publications: 2 Organism: Mus Musculus
+ up-regulates activity img/direct-activation.png phosphorylation PTPRJ 0.372
Publications: 2 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation ACP1 0.384
Publications: 2 Organism: Chlorocebus Aethiops
+ up-regulates img/direct-activation.png phosphorylation GRIN2A 0.733
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation CAV1 0.719
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation BSG (isoform 2) 0.272
Publications: 2 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation CTNNB1 0.843
Publications: 1 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation GRIN2B 0.769
Publications: 1 Organism: In Vitro
+ down-regulates img/direct_inhibition.png phosphorylation SCN5A 0.297
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation CDK5 0.597
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation MAPT 0.547
Publications: 1 Organism: Homo Sapiens
+ img/unknown.png phosphorylation NMT1 0.384
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 0.315
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 0.588
Publications: 1 Organism: In Vitro
Pathways:B-cell activation
+ up-regulates quantity img/direct-activation.png phosphorylation IFITM3 0.459
Publications: 1 Organism: Mus Musculus
+ up-regulates img/direct-activation.png phosphorylation LAT 0.744
Publications: 2 Organism: Homo Sapiens
Pathways:B-cell activation, T cell activation
+ up-regulates quantity by stabilization img/direct-activation.png phosphorylation CTLA4 0.768
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 0.768
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation CD300LF 0.352
Publications: 2
+ down-regulates activity img/direct_inhibition.png phosphorylation CNN3 0.332
Publications: 1 Organism: Chlorocebus Aethiops
+ down-regulates activity img/direct_inhibition.png phosphorylation STK11 0.331
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 0.568
Publications: 1 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation SLAMF1 0.653
Publications: 3 Organism: Chlorocebus Aethiops
+ up-regulates activity img/direct-activation.png phosphorylation FCGR2A 0.522
Publications: 2 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation WAS 0.573
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 0.584
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation MAPK14 0.478
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation MAPK14 0.478
Publications: 1 Organism: Mus Musculus
+ up-regulates activity img/direct-activation.png phosphorylation CLIC5 0.294
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation DLG2 0.374
Publications: 1 Organism: In Vitro
+ up-regulates img/direct-activation.png phosphorylation SHC1 0.727
Publications: 4 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation ITPR1 0.496
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation IKBKG 0.357
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PTK2 0.59
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation ARHGAP33 0.466
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png dephosphorylation FYN 0.536
Publications: 1 Organism: Homo Sapiens
Tissue: Kidney
+ down-regulates activity img/direct_inhibition.png phosphorylation ITCH 0.367
Publications: 1 Organism: Mus Musculus
+ down-regulates img/direct_inhibition.png dephosphorylation FYN 0.397
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation TXK 0.348
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 img/direct_inhibition.png dephosphorylation FYN 0.328
Publications: 1 Organism: Homo Sapiens
+ 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 0.399
Publications: 1 Organism: In Vitro
+ img/unknown.png phosphorylation CD5 0.5
Publications: 2 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation TOM1L1 0.439
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 0.399
Publications: 1 Organism: Homo Sapiens
Pathways:T cell activation
+ up-regulates img/direct-activation.png phosphorylation DLG4 0.574
Publications: 1 Organism: Homo Sapiens
Tissue: Brain
+ up-regulates img/direct-activation.png phosphorylation RPS6KA3 0.327
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png dephosphorylation FYN 0.728
Publications: 1 Organism: Homo Sapiens
Pathways:T cell activation
+ up-regulates img/direct-activation.png dephosphorylation FYN 0.397
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png dephosphorylation FYN 0.65
Publications: 1 Organism: Mus Musculus
+ up-regulates img/direct-activation.png dephosphorylation FYN 0.65
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by stabilization img/direct-activation.png phosphorylation ZDHHC5 0.398
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation JUP 0.548
Publications: 1 Organism: Rattus Norvegicus
+ down-regulates activity img/direct_inhibition.png phosphorylation JUP 0.548
Publications: 1 Organism: Rattus Norvegicus
+ up-regulates activity img/direct-activation.png phosphorylation DCBLD2 0.351
Publications: 7 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png phosphorylation NOX4 0.273
Publications: 1 Organism: In Vitro
+ down-regulates quantity img/direct_inhibition.png phosphorylation NFE2L2 0.411
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 0.346
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 0.43
Publications: 1 Organism: Mus Musculus
+ up-regulates img/direct-activation.png phosphorylation MED28 0.451
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 0.445
Publications: 1 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation CBL 0.804
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PLCG2 0.564
Publications: 2 Organism: In Vitro
Pathways:B-cell activation
+ up-regulates quantity img/direct-activation.png phosphorylation APP 0.464
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation PTPRT 0.424
Publications: 1
+ up-regulates activity img/direct-activation.png phosphorylation BCR-Dk 0.628
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation
+ up-regulates activity img/direct-activation.png phosphorylation BCAR1 0.765
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation FYN 0.414
Publications: 2 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation BCR-Ml 0.628
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation
+ up-regulates activity img/direct-activation.png phosphorylation BCR-Dl 0.628
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation
+ up-regulates img/direct-activation.png binding FYN 0.383
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation VAV1 0.627
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png binding FYN 0.547
Publications: 1 Organism: Homo Sapiens
Tissue: Muscle, Skeletal Muscle, Kidney
+ up-regulates activity img/direct-activation.png phosphorylation PTPRF 0.397
Publications: 1 Organism: Chlorocebus Aethiops
+ up-regulates activity img/direct-activation.png phosphorylation CYTH1 0.404
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation DAB1 0.612
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation TRPC6 0.514
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity img/direct-activation.png phosphorylation LRP8 0.636
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation GAB2 0.605
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation KHDRBS1 0.555
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation TRPV4 0.352
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation ZAP70 0.563
Publications: 1 Organism: Homo Sapiens
Pathways:T cell activation
+ up-regulates activity img/direct-activation.png phosphorylation PLEKHG1 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation NTRK1 0.257
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation PAG1 0.697
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation PRKCQ 0.345
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation NPHS1 0.737
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation LCP2 0.751
Publications: 1 Organism: Homo Sapiens
Pathways:T cell activation
+ up-regulates activity img/direct-activation.png phosphorylation SCN9A 0.371
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 FLT3 0.296
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation BCR-Mk 0.628
Publications: 1 Organism: Homo Sapiens
Pathways:B-cell activation