CSK (NM_004383) Human Recombinant Protein

Specifications

Product Data
Species	Human
Expression Host	HEK293T
Expression cDNA Clone or AA Sequence	Protein Sequence (showhide) >RC210758 protein sequence Red=Cloning site Green=Tags(s) MSAIQAAWPSGTECIAKYNFHGTAEQDLPFCKGDVLTIVAVTKDPNWYKAKNKVGREGIIPANYVQKREG VKAGTKLSLMPWFHGKITREQAERLLYPPETGLFLVRESTNYPGDYTLCVSCDGKVEHYRIMYHASKLSI DEEVYFENLMQLVEHYTSDADGLCTRLIKPKVMEGTVAAQDEFYRSGWALNMKELKLLQTIGKGEFGDVM LGDYRGNKVAVKCIKNDATAQAFLAEASVMTQLRHSNLVQLLGVIVEEKGGLYIVTEYMAKGSLVDYLRS RGRSVLGGDCLLKFSLDVCEAMEYLEGNNFVHRDLAARNVLVSEDNVAKVSDFGLTKEASSTQDTGKLPV KWTAPEALREKKFSTKSDVWSFGILLWEIYSFGRVPYPRIPLKDVVPRVEKGYKMDAPDGCPPAVYEVMK NCWHLDAAMRPSFLQLREQLEHIKTHELHL TRTRPLEQKLISEEDLAANDILDYKDDDDKV
Tag	C-Myc/DDK
Predicted MW	50.5 kDa
Concentration	>0.05 µg/µL as determined by microplate BCA method
Purity	> 80% as determined by SDS-PAGE and Coomassie blue staining
Buffer	25 mM Tris-HCl, 100 mM glycine, pH 7.3, 10% glycerol
Preparation	Recombinant protein was captured through anti-DDK affinity column followed by conventional chromatography steps.
Note	For testing in cell culture applications, please filter before use. Note that you may experience some loss of protein during the filtration process.
Storage	Store at -80°C.
Stability	Stable for 12 months from the date of receipt of the product under proper storage and handling conditions. Avoid repeated freeze-thaw cycles.
Bioactivity	CSK activity verified in a biochemical assay: CSK (c-src tyrosine kinase) (TP310758) activity was measured in a homogeneous time-resolved fluorescent (HTRF®) assay. CSK is a tyrosine kinase known to phosphorylate LCK, FYN and LYN. Varying concentrations of CSK were added to a reaction mix containing ATP and a biotinylated kinase substrate and the reaction mixture was incubated to allow the protein to phosphorylate the tyrosine residue in the substrate. HTRF detection reagents were then added, and the time-resolved fluorescent signal was measured on a Flexstation 3 microplate reader. The time resolved fluorescent signal is expressed as “delta R” or “ΔR” and is a ratio calculated from the fluorescent emission intensities of the donor and acceptor fluors.
Reference Data
RefSeq	NP_004374
Locus ID	1445
UniProt ID	P41240
Refseq Size	2755
Cytogenetics	15q24.1
Refseq ORF	1350
Summary	The protein encoded by this gene is involved in multiple pathways, including the regulation of Src family kinases. It plays an important role in T-cell activation through its association with the protein encoded by the protein tyrosine phosphatase, non-receptor type 22 (PTPN22) gene. This protein also phosphorylates C-terminal tyrosine residues on multiple substrates, including the protein encoded by the SRC proto-oncogene, non-receptor tyrosine kinase gene. Phosphorylation suppresses the kinase activity of the Src family tyrosine kinases. An intronic polymorphism (rs34933034) in this gene has been found to affect B-cell activation and is associated with systemic lupus erythematosus (SLE). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2017]
Protein Families	Druggable Genome, Protein Kinase
Protein Pathways	Chemokine signaling pathway, Epithelial cell signaling in Helicobacter pylori infection, Neurotrophin signaling pathway, Regulation of actin cytoskeleton

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