Lyn Proteins, cDNA Clones Research Reagents

LYN (LYN Proto-Oncogene, Src Family Tyrosine Kinase, also known as JTK8; p53Lyn; p56Lyn), located on 8q12.1, is conserved in chimpanzee, Rhesus monkey, dog, cow, mouse, rat, chicken, zebrafish, and frog. The gene produces a 58574 Da protein composed of 512 amino acids. This gene encodes a tyrosine-protein kinase, which may be involved in the regulation of mast cell degranulation, and erythroid differentiation. Tyrosine-protein kinase Lyn has many functions. LYN kinase may downregulate the expression of stem cell growth factor receptor (KIT).

Lyn Protein (1)

    Lyn cDNA Clone (15)


    In cloning vector

    In lentiviral vector

    Lyn qPCR Primer (1)

    Lyn Lysate (1)

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      Lyn Background

      Tyrosine-protein kinase Lyn is a member of the Src family of protein tyrosine kinases, which is mainly expressed in hematopoietic cells, in neural tissues liver, and adipose tissue. Tyrosine-protein kinase Lyn has many functions. Lyn kinase may downregulate the expression of stem cell growth factor receptor (KIT). Lyn kinase Acts as an effector of EpoR (erythropoietin receptor) in controlling KIT expression and may play a central role in erythroid differentiation during the switch between proliferation and maturation. Lyn kinase also acts as a positive regulator of cell movement while negatively regulating adhesion to stromal cells by inhibiting the ICAM-1-binding activity of beta-2 integrins. Lyn kinase relays suppressing signals from the chemokine receptor CXCR4 to beta-2 integrin LFA-1 in hematopoietic precursors. This kinase is involved in the induction of stress-activated protein kinase (SAPK), but not ERK or p38 MAPK, in response to genotoxic agents. In a word, Lyn kinase functions primarily as a negative regulator, but can also function as an activator, depending on the context. Tyrosine-protein kinase Lyn is Required for the initiation of the B-cell response, but also its down-regulation and termination. It also plays an important role in the regulation of B-cell differentiation, proliferation, survival, and apoptosis, and is important for immune self-tolerance. It has been reported that Lyn kinase plays a role in the inflammatory response to bacterial lipopolysaccharide. Lyn kinase 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.

      Lyn References

      • Grishin A V, et al. (2001) Interaction between growth arrest-DNA damage protein 34 and Src kinase Lyn negatively regulates genotoxic apoptosis. Proc Natl Acad Sci U.S.A. 98 (18): 10172-7.
      • Hayashi T, et al. (1999) The AMPA receptor interacts with and signals through the protein tyrosine kinase Lyn. Nature. 397(6714): 72-6.
      • Ptasznik A, et al. (2004) Short interfering RNA (siRNA) targeting the Lyn kinase induces apoptosis in primary, and drug-resistant, BCR-ABL1(+) leukemia cells. Nat Med. 10(11): 1187-9.

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