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Q62844 (FYN_RAT) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 116. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Tyrosine-protein kinase Fyn

EC=2.7.10.2
Alternative name(s):
Proto-oncogene c-Fyn
p59-Fyn
Gene names
Name:Fyn
OrganismRattus norvegicus (Rat) [Reference proteome]
Taxonomic identifier10116 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaSciurognathiMuroideaMuridaeMurinaeRattus

Protein attributes

Sequence length537 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at protein level

General annotation (Comments)

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, KIRREL 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. 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 By similarity. Ref.3

Catalytic activity

ATP + a [protein]-L-tyrosine = ADP + a [protein]-L-tyrosine phosphate. Ref.3

Cofactor

Manganese. Ref.3

Enzyme regulation

Inhibited by phosphorylation of Tyr-531 by leukocyte common antigen and activated by dephosphorylation of this site By similarity.

Subunit structure

Interacts (via its SH3 domain) with PIK3R1 and PRMT8. Interacts with FYB, PAG1, and SH2D1A. Interacts with CD79A (tyrosine-phosphorylated form); the interaction increases FYN activity. Interacts with TOM1L1 (phosphorylated form). Interacts with SH2D1A and SLAMF1. Interacts with and phosphorylates ITCH, down-regulating its activity. Interacts with FASLG. Interacts with RUNX3. Interacts with KIT. Interacts with KDR (tyrosine phosphorylated). Interacts with EPHA8; possible downstream effector of EPHA8 in regulation of cell adhesion. Interacts with PTK2/FAK1; this interaction leads to PTK2/FAK1 phosphorylation and activation. Interacts with CAV1; this interaction couples integrins to the Ras-ERK pathway. Interacts (via SH2 domain) with CSF1R (tyrosine phosphorylated) By similarity. Interacts (via SH3 domain) with KLHL2 (via N-terminus). Ref.4

Subcellular location

Cell membrane By similarity. Note: Present and active in lipid rafts. Palmitoylation is crucial for proper trafficking By similarity. Ref.3

Tissue specificity

Detected in spinal cord oligodendrocytes (at protein level). Ref.4

Developmental stage

Up-regulated during oligodendrocyte differentiation. Ref.3

Post-translational modification

Autophosphorylated at Tyr-420. Phosphorylation on the C-terminal tail at Tyr-531 by CSK maintains the enzyme in an inactive state. PTPRC/CD45 dephosphorylates Tyr-531 leading to activation. Dephosphorylation at Tyr-420 by PTPN2 negatively regulates T-cell receptor signaling By similarity.

Palmitoylation at Cys-3 and Cys-6 regulate subcellular location By similarity.

Sequence similarities

Belongs to the protein kinase superfamily. Tyr protein kinase family. SRC subfamily.

Contains 1 protein kinase domain.

Contains 1 SH2 domain.

Contains 1 SH3 domain.

Ontologies

Keywords
   Cellular componentCell membrane
Membrane
   DomainSH2 domain
SH3 domain
   LigandATP-binding
Manganese
Metal-binding
Nucleotide-binding
   Molecular functionDevelopmental protein
Kinase
Transferase
Tyrosine-protein kinase
   PTMLipoprotein
Myristate
Palmitate
Phosphoprotein
   Technical termComplete proteome
Reference proteome
Gene Ontology (GO)
   Biological_processT cell receptor signaling pathway

Inferred from electronic annotation. Source: Ensembl

activated T cell proliferation

Inferred from electronic annotation. Source: Ensembl

cellular response to growth factor stimulus

Inferred from expression pattern PubMed 11236902. Source: RGD

cellular response to peptide hormone stimulus

Inferred from expression pattern PubMed 9460655. Source: RGD

dendrite morphogenesis

Inferred from electronic annotation. Source: Ensembl

detection of mechanical stimulus involved in sensory perception of pain

Inferred from electronic annotation. Source: Ensembl

forebrain development

Inferred from electronic annotation. Source: Ensembl

ionotropic glutamate receptor signaling pathway

Traceable author statement PubMed 12736333. Source: RGD

negative regulation of extrinsic apoptotic signaling pathway in absence of ligand

Inferred from mutant phenotype PubMed 18469807. Source: UniProtKB

negative regulation of gene expression

Inferred from electronic annotation. Source: Ensembl

negative regulation of neuron apoptotic process

Inferred from mutant phenotype PubMed 18469807. Source: UniProtKB

negative regulation of protein catabolic process

Inferred from electronic annotation. Source: Ensembl

neuron migration

Inferred from electronic annotation. Source: Ensembl

peptidyl-tyrosine phosphorylation

Inferred from direct assay PubMed 9460655. Source: RGD

positive regulation of neuron projection development

Inferred from electronic annotation. Source: Ensembl

positive regulation of phosphatidylinositol 3-kinase signaling

Inferred from mutant phenotype PubMed 18469807. Source: UniProtKB

positive regulation of protein localization to nucleus

Inferred from electronic annotation. Source: Ensembl

protein autophosphorylation

Inferred from direct assay PubMed 12353920. Source: RGD

regulation of cell shape

Inferred from electronic annotation. Source: Ensembl

response to drug

Inferred from expression pattern PubMed 14625475PubMed 9551931. Source: RGD

response to ethanol

Inferred from electronic annotation. Source: Ensembl

   Cellular_componentcytosol

Traceable author statement. Source: Reactome

endosome

Inferred from electronic annotation. Source: Ensembl

intracellular membrane-bounded organelle

Inferred from direct assay PubMed 1722201. Source: RGD

membrane

Inferred from direct assay PubMed 12882964. Source: RGD

mitochondrion

Inferred from direct assay PubMed 12007793. Source: RGD

plasma membrane

Inferred from electronic annotation. Source: UniProtKB-SubCell

postsynaptic density

Inferred from direct assay PubMed 11226670. Source: RGD

   Molecular_functionATP binding

Inferred from electronic annotation. Source: UniProtKB-KW

CD4 receptor binding

Inferred from physical interaction PubMed 1372996. Source: RGD

CD8 receptor binding

Inferred from physical interaction PubMed 1372996. Source: RGD

T cell receptor binding

Inferred from direct assay PubMed 1372996. Source: RGD

glycoprotein binding

Inferred from physical interaction PubMed 8103744PubMed 8870703. Source: RGD

metal ion binding

Inferred from electronic annotation. Source: UniProtKB-KW

non-membrane spanning protein tyrosine kinase activity

Inferred from electronic annotation. Source: UniProtKB-EC

peptide hormone receptor binding

Inferred from physical interaction PubMed 7935483. Source: RGD

phosphatidylinositol 3-kinase binding

Inferred from direct assay PubMed 9460655. Source: RGD

protein complex binding

Inferred from physical interaction PubMed 12618293. Source: RGD

protein kinase activity

Inferred from direct assay PubMed 12353920. Source: RGD

protein tyrosine kinase activity

Inferred from direct assay PubMed 12007793PubMed 12231245PubMed 8870703. Source: RGD

receptor binding

Inferred from physical interaction PubMed 1280324. Source: RGD

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Initiator methionine11Removed By similarity UniProtKB P06241
Chain2 – 537536Tyrosine-protein kinase Fyn UniProtKB P06241
PRO_0000282948

Regions

Domain82 – 14362SH3
Domain149 – 24698SH2
Domain271 – 524254Protein kinase
Nucleotide binding277 – 2859ATP By similarity UniProtKB P28523

Sites

Active site3901Proton acceptor By similarity UniProtKB P28523
Binding site2991ATP Ref.3

Amino acid modifications

Modified residue151Phosphothreonine By similarity
Modified residue211Phosphoserine By similarity UniProtKB P06241
Modified residue251Phosphoserine By similarity
Modified residue1851Phosphotyrosine By similarity
Modified residue2131Phosphotyrosine By similarity
Modified residue2141Phosphotyrosine By similarity
Modified residue2571Phosphoserine By similarity
Modified residue4201Phosphotyrosine; by autocatalysis By similarity UniProtKB P06241
Modified residue4401Phosphotyrosine By similarity
Modified residue5121Phosphothreonine By similarity
Modified residue5311Phosphotyrosine; by CSK By similarity UniProtKB P39688
Lipidation21N-myristoyl glycine By similarity UniProtKB P39688
Lipidation31S-palmitoyl cysteine By similarity UniProtKB P39688
Lipidation61S-palmitoyl cysteine By similarity UniProtKB P39688

Experimental info

Mutagenesis2991K → M: Loss of kinase activity and reduction in oligodendrocyte process extension and myelin membrane formation. Ref.3

Sequences

Sequence LengthMass (Da)Tools
Q62844 [UniParc].

Last modified November 1, 1996. Version 1.
Checksum: 11AE4420919DBF1C

FASTA53760,702
        10         20         30         40         50         60 
MGCVQCKDKE AAKLTEERDG SLNQSSGYRY GTDPTPQHYP SFGVTSIPNY NNFHAAGGQG 

        70         80         90        100        110        120 
LTVFGGVNSS SHTGTLRTRG GTGVTLFVAL YDYEARTEDD LSFHKGEKFQ ILNSSEGDWW 

       130        140        150        160        170        180 
EARSLTTGET GYIPSNYVAP VDSIQAEEWY FGKLGRKDAE RQLLSFGNPR GTFLIRESET 

       190        200        210        220        230        240 
TKGAYSLSIR DWDDMKGDHV KHYKIRKLDN GGYYITTRAQ FETLQQLVQH YSERAAGLCC 

       250        260        270        280        290        300 
RLVVPCHKGM PRLTDLSVKT KDVWEIPRES LQLIKRLGNG QFGEVWMGTW NGNTKVAIKT 

       310        320        330        340        350        360 
LKPGTMSPES FLEEAQIMKK LKHDKLVQLY AVVSEEPIYI VTEYMNKGSL LDFLKDGEGR 

       370        380        390        400        410        420 
ALKLPNLVDM AAQVAAGMAY IERMNYIHRD LRSANILVGN GLICKIADFG LARLIEDNEY 

       430        440        450        460        470        480 
TARQGAKFPI KWTAPEAALY GRFTIKSDVW SFGILLTELV TKGRVPYPGM NNREVLEQVE 

       490        500        510        520        530 
RGYRMPCPQD CPISLHELMI HCWKKDPEER PTFEYLQGFL EDYFTATEPQ YQPGENL 

« Hide

References

[1]"Expression of three type mRNAs encoding rat FYN by alternative splicing within 5' untranslated region."
Nemoto K., Sekimoto M., Kageyama H., Fukamachi K., Nemoto F., Ueyama T., Senba E., Tomita I.
Submitted (SEP-1995) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [MRNA].
Strain: SHRSP.
Tissue: Brain.
[2]"Novel putative protein kinase clones from a rat large granular lymphocyte tumor cell line."
Yue C.C.
Mol. Immunol. 28:399-408(1991) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA].
[3]"Morphological differentiation of oligodendrocytes requires activation of Fyn tyrosine kinase."
Osterhout D.J., Wolven A., Wolf R.M., Resh M.D., Chao M.V.
J. Cell Biol. 145:1209-1218(1999) [PubMed] [Europe PMC] [Abstract]
Cited for: FUNCTION, SUBCELLULAR LOCATION, DEVELOPMENTAL STAGE, MUTAGENESIS OF LYS-299.
[4]"Process elongation of oligodendrocytes is promoted by the Kelch-related actin-binding protein Mayven."
Jiang S., Avraham H.K., Park S.Y., Kim T.A., Bu X., Seng S., Avraham S.
J. Neurochem. 92:1191-1203(2005) [PubMed] [Europe PMC] [Abstract]
Cited for: INTERACTION WITH KLHL2, TISSUE SPECIFICITY.
+Additional computationally mapped references.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
U35365 mRNA. Translation: AAA82942.1.
PIRPT0199.
RefSeqNP_036887.1. NM_012755.1.
UniGeneRn.19361.
Rn.228993.

3D structure databases

ProteinModelPortalQ62844.
SMRQ62844. Positions 81-537.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

BioGrid247215. 2 interactions.
IntActQ62844. 1 interaction.
STRING10116.ENSRNOP00000000733.

PTM databases

PhosphoSiteQ62844.

Proteomic databases

PaxDbQ62844.
PRIDEQ62844.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblENSRNOT00000000733; ENSRNOP00000000733; ENSRNOG00000000596.
GeneID25150.
KEGGrno:25150.
UCSCRGD:2641. rat.

Organism-specific databases

CTD2534.
RGD2641. Fyn.

Phylogenomic databases

eggNOGCOG0515.
GeneTreeENSGT00620000087702.
HOGENOMHOG000233858.
HOVERGENHBG008761.
InParanoidQ62844.
KOK05703.
OMANNFHATG.
OrthoDBEOG7GTT2V.
PhylomeDBQ62844.
TreeFamTF351634.

Gene expression databases

GenevestigatorQ62844.

Family and domain databases

Gene3D3.30.505.10. 1 hit.
InterProIPR011009. Kinase-like_dom.
IPR000719. Prot_kinase_dom.
IPR017441. Protein_kinase_ATP_BS.
IPR001245. Ser-Thr/Tyr_kinase_cat_dom.
IPR000980. SH2.
IPR001452. SH3_domain.
IPR008266. Tyr_kinase_AS.
IPR020635. Tyr_kinase_cat_dom.
[Graphical view]
PfamPF07714. Pkinase_Tyr. 1 hit.
PF00017. SH2. 1 hit.
PF00018. SH3_1. 1 hit.
[Graphical view]
PRINTSPR00401. SH2DOMAIN.
PR00452. SH3DOMAIN.
PR00109. TYRKINASE.
SMARTSM00252. SH2. 1 hit.
SM00326. SH3. 1 hit.
SM00219. TyrKc. 1 hit.
[Graphical view]
SUPFAMSSF50044. SSF50044. 1 hit.
SSF55550. SSF55550. 1 hit.
SSF56112. SSF56112. 1 hit.
PROSITEPS00107. PROTEIN_KINASE_ATP. 1 hit.
PS50011. PROTEIN_KINASE_DOM. 1 hit.
PS00109. PROTEIN_KINASE_TYR. 1 hit.
PS50001. SH2. 1 hit.
PS50002. SH3. 1 hit.
[Graphical view]
ProtoNetSearch...

Other

NextBio605589.
PROQ62844.

Entry information

Entry nameFYN_RAT
AccessionPrimary (citable) accession number: Q62844
Entry history
Integrated into UniProtKB/Swiss-Prot: April 3, 2007
Last sequence update: November 1, 1996
Last modified: April 16, 2014
This is version 116 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families