Recombinant Human Tyrosine-protein kinase Lyn (LYN)

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Code CSB-EP013259HU
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Size $224
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  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
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Product Details

Purity
Greater than 90% as determined by SDS-PAGE.
Target Names
Uniprot No.
Research Area
Signal Transduction
Species
Homo sapiens (Human)
Source
E.coli
Expression Region
2-512aa
Target Protein Sequence
GCIKSKGKDSLSDDGVDLKTQPVRNTERTIYVRDPTSNKQQRPVPESQLLPGQRFQTKDPEEQGDIVVALYPYDGIHPDDLSFKKGEKMKVLEEHGEWWKAKSLLTKKEGFIPSNYVAKLNTLETEEWFFKDITRKDAERQLLAPGNSAGAFLIRESETLKGSFSLSVRDFDPVHGDVIKHYKIRSLDNGGYYISPRITFPCISDMIKHYQKQADGLCRRLEKACISPKPQKPWDKDAWEIPRESIKLVKRLGAGQFGEVWMGYYNNSTKVAVKTLKPGTMSVQAFLEEANLMKTLQHDKLVRLYAVVTREEPIYIITEYMAKGSLLDFLKSDEGGKVLLPKLIDFSAQIAEGMAYIERKNYIHRDLRAANVLVSESLMCKIADFGLARVIEDNEYTAREGAKFPIKWTAPEAINFGCFTIKSDVWSFGILLYEIVTYGKIPYPGRTNADVMTALSQGYRMPRVENCPDELYDIMKMCWKEKAEERPTFDYLQSVLDDFYTATEGQYQQQP
Note: The complete sequence including tag sequence, target protein sequence and linker sequence could be provided upon request.
Mol. Weight
64.4 kDa
Protein Length
Full Length of Mature Protein
Tag Info
N-terminal 6xHis-tagged
Form
Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer
If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose.
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
3-7 business days
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet & COA
Please contact us to get it.

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Target Background

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. 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. Mediates phosphorylation of the BCR-ABL fusion protein. 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. Phosphorylates LPXN on 'Tyr-72'. Kinase activity facilitates TLR4-TLR6 heterodimerization and signal initiation. Phosphorylates SCIMP on 'Tyr-107'; this enhances binding of SCIMP to TLR4, promoting the phosphorylation of TLR4, and a selective cytokine response to lipopolysaccharide in macrophages. Phosphorylates CLNK.
Gene References into Functions
  1. Fyn and Lyn as important factors that promote Plasmacytoid dendritic cell responses. PMID: 28368000
  2. these findings demonstrated that Lyn overexpression ameliorated airway mucus hypersecretion by down-regulating STAT6 and its binding to the MUC5AC promoter. PMID: 28205598
  3. overexpression LYN promoted tumor growth, meanwhile knockdown LYN inhibited tumor growth. These results indicate that LYN tyrosine kinase is an oncogenic gene and can serve as a novel target for cervical cancer research and therapy. PMID: 27690342
  4. LYN is a useful prognostic marker and a selective target of dasatinib therapy in the lung adenocarcinoma subpopulation, especially in female non-smokers with lung adenocarcinoma. PMID: 27756880
  5. SHP-1 tyrosine 536 phosphorylation by Lyn activates the phosphatase promoting inhibitory signaling through the immunoreceptor. PMID: 28811476
  6. A novel pancancer mechanism of Lyn-dependent control of epithelial-mesenchymal transition and role of this kinase in tumor progression. PMID: 28288135
  7. Authors demonstrate that LYN kinase is essential for CLL progression. Lyn deficiency results in a significantly reduced CLL burden in vivo. PMID: 27728807
  8. Our studies indicate not only a concept of mucus hypersecretion in asthma that involves Lyn kinase but also an important therapeutic candidate for asthma. PMID: 28024734
  9. LPS tolerance interferes with TLR4 signaling by inhibiting Lyn and c-Src phosphorylation and their recruitment to TLR4, while increasing the phosphatase activity and expression of PP2A, PTPN22, PTP1B and MKP1. PMID: 26457672
  10. SYK, LYN and PTPN6 were markedly elevated in atherosclerotic plaques of carotid atherosclerosis patients. PMID: 26742467
  11. Our data suggests that nuclear Lyn is a potential therapeutic target for clear cell renal cell carcinoma and dasatinib affects cellular functions associated with cancer progression via a Src kinase independent mechanism. PMID: 26984511
  12. Authors discovered in this study that LYN was a critical gene. It was found to be the key nodule of several significant biological networks. PMID: 26708841
  13. Inhibition of Lyn activity using dasatinib in mantle cell lymphoma overcomes bortezomib resistance. PMID: 26517678
  14. positively regulates NF-kappaB transactivation through the phosphorylation of the p110 subunit of PI 3-kinase PMID: 26055819
  15. This study showed an interdependence between ROS generation and lipid rafts and Lyn relocation leading the cells to undergo the successive acrosome reaction. PMID: 26308013
  16. SRC, LYN and CKB expression or DNA methylation could be useful markers for predicting tumor progression. PMID: 26460485
  17. Suggest an interrelated kinase module involving c-Raf/PI3K/Lyn and perhaps Fgr functions in a nontraditional way during retinoic acid-induced maturation or during rescue of RA induction therapy using inhibitor co-treatment in RA-resistant leukemia cells. PMID: 25817574
  18. Diminished Lyn levels impair Claudin-2 expression in breast cancer cells. The Lyn-selective kinase inhibitor, Bafetinib (INNO-406), reduces Claudin-2 expression and suppresses breast cancer liver metastasis. PMID: 25823815
  19. Demonstrate role for CBL in the control of AXL/SYK/LYN network mediating resistance to nilotinib treatment in chronic myeloid leukemia cells. PMID: 25965880
  20. Fyn, but not Lyn, was required for complete Pyk2 phosphorylation by thrombin. PMID: 25967238
  21. interaction between LacCer and Lyn in the lipid rafts of neutrophil-like cells PMID: 25418321
  22. These results suggest that LYN mutations mediate escape from antiestrogens in a subset of ER(+) breast cancers. PMID: 25401474
  23. molecular or pharmacologic inhibition of the Lyn-PI3K/AKT pathway, markedly increased the sensitivity of the otherwise chemoresistant Cbl mutant-JMML cells to chemotherapeutic agents currently used in the treatment of JMML patients PMID: 24469048
  24. Lyn tyrosine kinase promotes silencing of ATM-dependent checkpoint signaling during recovery from DNA double-strand breaks. PMID: 25173936
  25. Cell detachment-induced Lyn activation through the change in the membrane distribution of Lyn plays an important role in survival of suspension cells. PMID: 25104351
  26. Lyn kinase activity is important for CD38-associated signaling that may drive all-trans retinoic acid-induced differentiation. PMID: 24686085
  27. An EphA4-Lyn pathway was identified that is essential for the metabolism of amyloid precursor protein. PMID: 24217950
  28. PSTPIP2 dysregulation contributes to aberrant terminal differentiation in GATA-1-deficient megakaryocytes by activating LYN. PMID: 24407241
  29. Our data suggest that the LYN/PTEN expression ratio may be a sensitive monitor of disease progression in unmutated CML patients under imatinib or nilotinib treatment. PMID: 24091144
  30. Lyn gene expression levels increase with primary glioma tumor grade and inversely correlate with patient survival. TWEAK protein promotes glioblastoma cell chemotaxis via Lyn activation. PMID: 23975833
  31. MBNL142-43 bind the Src-homology 3 domain of Src family kinases (SFKs) via their proline-rich motifs. PMID: 23949219
  32. in contrast to c-Src and Yes, which increase vascular permeability in response to stimuli, Lyn stabilizes endothelial junctions through phosphorylation of FAK. PMID: 24108461
  33. Associations between treatment response and Lyn, Syk, PLCgamma2 and ERK were not found. PMID: 23039362
  34. These data demonstrate a mechanism whereby Fyn and Lyn, redundantly mediate anticryptococcal killing by inducing the polarization of perforin-containing granules to the NK cell-cryptococcal synapse. PMID: 23918783
  35. Lyn, a Src family kinase, regulates activation of epidermal growth factor receptors in lung adenocarcinoma cells. PMID: 23866081
  36. These results reveal that elevated expression of miR-30a is responsible for the reduction in levels of Lyn in B cells from patients with systemic lupus erythematosus, suggesting that miR-30a plays an important role in B cell hyperactivity. PMID: 23450709
  37. results define a novel signaling pathway in basal breast cancer involving Lyn and SgK269 that offers clinical opportunities for therapeutic intervention PMID: 23378338
  38. these data suggest a novel role for Lyn in erythroid cell survival. PMID: 23583449
  39. Oridonin inhibiting activations of LYN (one of SRC family kinases) and ABL and their downstream Akt/mTOR, Raf/MEK/ERK and STAT5 pathways. PMID: 22895079
  40. The E613R allele of CD45 produces neither a pure hypomorphic nor a hypermorphic variant of the phosphatase; rather, it appears to alter CD45 substrate selectivity for specific Src-family kinases. PMID: 23396948
  41. our findings demonstrate that Yes and Lyn phosphorylate EGFR at Y1101, which influences EGFR nuclear translocation in this model of cetuximab resistance. PMID: 22430206
  42. The Dok-3/Grb2 protein signal module attenuates Lyn kinase-dependent activation of Syk kinase in B cell antigen receptor microclusters PMID: 23223229
  43. The interaction between Lyn and FcepsilonRIbeta is indispensable for FcepsilonRI-mediated human mast cell activation. PMID: 22845063
  44. Lyn is involved in CD24-induced ERK1/2 activation in colorectal cancer. PMID: 22731636
  45. findings show that Lyn mediates tumor progression of EGFRvIII-expressing head and neck squamous cell carcinomas PMID: 22490227
  46. Data show that a higher percentage of classical Hodgkin lymphoma cases expressing Lyn, Fyn and Syk compared with previous reports. PMID: 21749309
  47. the activation of Hck, Lyn and c-Src by Nef is highly conserved among all major clades of HIV-1 PMID: 22393415
  48. The role of the Src family kinase Lyn in the immunomodulatory activities of cathelicidin peptide LL-37 on monocytic cells PMID: 22246800
  49. In chorea acanthocytosis red blood cells, band 3 Tyr phosphorylation by Lyn was independent of the canonical Syk-mediated pathway. PMID: 21951684
  50. describe a Lyn-dependent mechanism for promoting localized integrin activation and establishing adhesion sites at the leading edge to allow neutrophils to move forward in the chemoattractant gradient. PMID: 21628423

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Involvement in disease
Constitutively phosphorylated and activated in cells from a number of chronic myelogenous leukemia (CML) and acute myeloid leukemia (AML) patients. Mediates phosphorylation of the BCR-ABL fusion protein. Abnormally elevated expression levels or activation of LYN signaling may play a role in survival and proliferation of some types of cancer cells.
Subcellular Location
Cell membrane. Nucleus. Cytoplasm. Cytoplasm, perinuclear region. Golgi apparatus. Membrane; Lipid-anchor. 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 plasma membrane occurs in a kinase domain-dependent but kinase activity independent manner and is mediated by exocytic vesicular transport. Detected on plasma membrane lipid rafts.
Protein Families
Protein kinase superfamily, Tyr protein kinase family, SRC subfamily
Tissue Specificity
Detected in monocytes (at protein level). Detected in placenta, and in fetal brain, lung, liver and kidney. Widely expressed in a variety of organs, tissues, and cell types such as epidermoid, hematopoietic, and neuronal cells. Expressed in primary neurob
Database Links

HGNC: 6735

OMIM: 165120

KEGG: hsa:4067

STRING: 9606.ENSP00000428924

UniGene: Hs.491767

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