Lck Antibody (8E5F9)

Product Discontinued

Lck Antibody (8E5F9) Summary

• Immunogen: Ni-NTA purified truncated recombinant Lck expressed in E. Coli strain BL21 (DE3)
• Specificity: Lck Antibody (4B2C7)
• Isotype: IgG2a
• Clonality: Monoclonal
• Host: Mouse
• Gene: LCK
• Purity: Unpurified

Applications/Dilutions

• Dilutions:
  • ELISA 1:10000
  • Western Blot 1:500-1:2000
• Theoretical MW: 56 kDa.
  Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Reactivity Notes

Human

Packaging, Storage & Formulations

• Storage: Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
• Buffer: Ascites
• Preservative: 0.03% Sodium Azide
• Purity: Unpurified

Alternate Names for Lck Antibody (8E5F9)

• EC 2.7.10
• EC 2.7.10.2
• Hck-3
• Lck
• Lcktkr
• Leukocyte C-terminal Src kinase
• LSK
• LSTRA
• Lymphocyte cell-specific protein-tyrosine kinase
• lymphocyte-specific protein tyrosine kinase
• p56(LSTRA) protein-tyrosine kinase
• p56lck
• p56-LCK
• pp58lck
• Protein YT16
• Proto-oncogene Lck
• proto-oncogene tyrosine-protein kinase LCK
• T cell-specific protein-tyrosine kinase
• T-lymphocyte specific protein tyrosine kinase p56lck
• tyrosine-protein kinase Lck
• YT16

Background

Lck is a lymphoid specific cytosolic protein tyrosine kinase (PTK), which is essential for T cell development and function. It is constitutively associated with the cytoplasmic portions of the CD4 and CD8 surface receptors and plays a key role in T cell antigen receptor (TCR) linked signal transduction pathways. Association of the TCR with a peptide antigen bound MHC complex facilitates the interaction of CD4 and CD8 with MHC class II and class I molecules, respectively, and thereby recruits the associated Lck to the vicinity of the TCR/CD3 complex. Lck then phosphorylates tyrosine residues within the immunoreceptor tyrosine based activation motifs (ITAMs) in the cytoplasmic tails of the TCR chains and CD3 subunits. The phosphoITAMs serve as docking sites for Src homology domain 2 (SH2) containing molecules, predominantly ZAP 70 and Syk. Only then can ZAP 70 undergo tyrosine phosphorylation, become enzymatically active and further phosphorylate downstream effector molecules. In addition, Lck contributes to signaling by other receptor molecules. Lck is expressed at all stages of thymocyte development and is required for the regulation of maturation events that are governed by both pre-TCR and mature TCR. Lck (p56lck), a member of the Src family of non-receptor tyrosine protein kinases, is expressed predominantly in T cells. Lck function is critical both for T cell development in the thymus and activation of mature T cells in the periphery by antigen. The activity of Lck is known to be regulated by phosphorylation of two conserved tyrosine residues, Tyr-505 (equivalent to Tyr-529 in c-Src) and Tyr-394 (equivalent to Tyr-418 in c-Src).

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Bioinformatics

• Gene Symbol: LCK