Lyn
entrez
81515
canonical
uniprot
Q07014
canonical
ensembl
ENSRNOG00000008180
resolver
ensembl
ENSRNOG00055019728
resolver
ensembl
ENSRNOG00060009930
resolver
ensembl
ENSRNOG00065015515
resolver
ensp
ENSRNOP00000011130
resolver
genesymbol
Lyn
resolver
uniprot
Q63320
resolver
uniprot_entry
LYN_RAT
resolver
uniprot_sec
Q63320
resolver
activity_regulation
ACTIVITY REGULATION: Subject to autoinhibition, mediated by intramolecular interactions between the SH2 domain and the C-terminal phosphotyrosine. Phosphorylation at Tyr-397 is required for optimal activity. Phosphorylated by CSK at Tyr-508; phosphorylation at Tyr-508 inhibits kinase activity. Kinase activity is modulated by dephosphorylation by PTPRC/CD45. {ECO:0000269|PubMed:9477973}.
uniprot
proteins
amino_acid_sequence
MGCIKSKRKDNLNDDGVDMKTQPVRNTDRTIYVRDPTSNKQQRPVPESQLLPGQRFQAKDPEEQGDIVVALYPYDGIHPDDLSFKKGEKMKVLEEHGEWWKAKSLSSKREGFIPSNYVAKVNTLETEEWFFKDITRKDAERQLLAPGNSAGAFLIRESETLKGSFSLSVRDYDPMHGDVIKHYKIRSLDNGGYYISPRITFPCISDMIKHYQKQSDGLCRRLEKACISPKPQKPWDKDAWEIPRESIKLVKKLGAGQFGEVWMGYYNNSTKVAVKTLKPGTMSAQAFLEEANLMKTLQHDKLVRLYAVVTKEEPIYIITEFMAKGSLLDFLKSDEGSKVLLPKLIDFSAQIAEGMAYIERKNYIHRDLRAANVLVSESLMCKIADFGLARVIEDNEYTAREGAKFPIKWTAPEAINFGCFTIKSDVWSFGILLYEIVTYGKIPYPGRTNADVMTALSQGYRMPRMENCPDELYDIMKMCWKESAEERPTFDYLQSVLDDFYTATEGQYQQQP
uniprot
proteins
ec_number
2.7.10.2
uniprot
proteins
function
FUNCTION: Non-receptor tyrosine-protein kinase that transmits signals from cell surface receptors and plays an important role in the regulation of innate and adaptive immune responses, hematopoiesis, responses to growth factors and cytokines, integrin signaling, but also responses to DNA damage and genotoxic agents. Functions primarily as negative regulator, but can also function as activator, depending on the context. Required for the initiation of the B-cell response, but also for its down-regulation and termination. Plays an important role in the regulation of B-cell differentiation, proliferation, survival and apoptosis, and is important for immune self-tolerance. Acts downstream of several immune receptors, including the B-cell receptor, CD79A, CD79B, CD5, CD19, CD22, FCER1, FCGR2, FCGR1A, TLR2 and TLR4. Plays a role in the inflammatory response to bacterial lipopolysaccharide. Mediates the responses to cytokines and growth factors in hematopoietic progenitors, platelets, erythrocytes, and in mature myeloid cells, such as dendritic cells, neutrophils and eosinophils. Acts downstream of EPOR, KIT, MPL, the chemokine receptor CXCR4, as well as the receptors for IL3, IL5 and CSF2. Plays an important role in integrin signaling. Regulates cell proliferation, survival, differentiation, migration, adhesion, degranulation, and cytokine release. Involved in the regulation of endothelial activation, neutrophil adhesion and transendothelial migration (By similarity). Down-regulates signaling pathways by phosphorylation of immunoreceptor tyrosine-based inhibitory motifs (ITIM), that then serve as binding sites for phosphatases, such as PTPN6/SHP-1, PTPN11/SHP-2 and INPP5D/SHIP-1, that modulate signaling by dephosphorylation of kinases and their substrates. Phosphorylates LIME1 in response to CD22 activation. Phosphorylates BTK, CBL, CD5, CD19, CD72, CD79A, CD79B, CSF2RB, DOK1, HCLS1, LILRB3/PIR-B, MS4A2/FCER1B, SYK and TEC. Promotes phosphorylation of SIRPA, PTPN6/SHP-1, PTPN11/SHP-2 and INPP5D/SHIP-1. Required for rapid phosphorylation of FER in response to FCER1 activation. Mediates KIT phosphorylation. Acts as an effector of EPOR (erythropoietin receptor) in controlling KIT expression and may play a role in erythroid differentiation during the switch between proliferation and maturation. Depending on the context, activates or inhibits several signaling cascades. Regulates phosphatidylinositol 3-kinase activity and AKT1 activation. Regulates activation of the MAP kinase signaling cascade, including activation of MAP2K1/MEK1, MAPK1/ERK2, MAPK3/ERK1, MAPK8/JNK1 and MAPK9/JNK2. Mediates activation of STAT5A and/or STAT5B (By similarity). Phosphorylates LPXN on 'Tyr-72' (By similarity). Kinase activity facilitates TLR4-TLR6 heterodimerization and signal initiation. Phosphorylates SCIMP on 'Tyr-96'; this enhances binding of SCIMP to TLR4, promoting the phosphorylation of TLR4, and a selective cytokine response to lipopolysaccharide in macrophages (By similarity). Phosphorylates CLNK (By similarity). Phosphorylates BCAR1/CAS and NEDD9/HEF1 (By similarity). {ECO:0000250|UniProtKB:P07948, ECO:0000250|UniProtKB:P25911}.
uniprot
proteins
mass_dalton
58660
uniprot
proteins
post_translational_modification
PTM: Ubiquitinated. Ubiquitination is SH3-dependent (By similarity). {ECO:0000250}.; PTM: Autophosphorylated (By similarity). Phosphorylated on tyrosine residues in response to KIT signaling (By similarity). Phosphorylation at Tyr-397 is required for optimal activity (By similarity). Phosphorylation at Tyr-508 inhibits kinase activity (By similarity). Phosphorylated at Tyr-508 by CSK (By similarity). Dephosphorylated by PTPRC/CD45 (By similarity). Becomes rapidly phosphorylated upon activation of the B-cell receptor and the immunoglobulin receptor FCGR1A (By similarity). Phosphorylated in response to integrin ITGB1 in B-cells (By similarity). {ECO:0000250|UniProtKB:P07948, ECO:0000250|UniProtKB:P25911}.
uniprot
proteins
protein_family
Protein kinase superfamily
uniprot
proteins
protein_family
SRC subfamily
uniprot
proteins
protein_family
Tyr protein kinase family
uniprot
proteins
pubmed
22673903
uniprot
proteins
pubmed
8125304
uniprot
proteins
pubmed
9295361
uniprot
proteins
pubmed
9477973
uniprot
proteins
sequence_length
512
uniprot
proteins
subcellular_location
SUBCELLULAR LOCATION: Cell membrane {ECO:0000250}. Nucleus {ECO:0000250}. Cytoplasm {ECO:0000250}. Cytoplasm, perinuclear region {ECO:0000250}. Golgi apparatus {ECO:0000250}. Membrane {ECO:0000250|UniProtKB:P07948}; Lipid-anchor {ECO:0000250|UniProtKB:P07948}. Note=Accumulates in the nucleus by inhibition of Crm1-mediated nuclear export. Nuclear accumulation is increased by inhibition of its kinase activity. The trafficking from the Golgi apparatus to the cell membrane occurs in a kinase domain-dependent but kinase activity independent manner and is mediated by exocytic vesicular transport (By similarity). {ECO:0000250}.
uniprot
proteins