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Specifications

Clone Host Grade Applications Polyclonal Rabbit Affinity Purified E B IP

A hallmark of signal transduction pathways is the reversible phosphorylation of serine and threonine residues within specific sequences, or motifs, in target proteins. Specific signaling motifs include not only sequences that are recognized by protein kinases, but also those that are recognized by phosphorylation-dependent binding proteins like 14-3-3. These modular phosphoprotein interacting domains are critical elements in modulating, directing and amplifying intracellular communications. Many critical protein kinases can be regulated by phosphorylation at a specific serine or threonine surrounded by phenylalanine or tyrosine. For example, Akt, an important kinase that regulates cell survival, is activated by phosphorylation at Ser473, a site surrounded by phenylalanine and tyrosine. RSK1, p70S6K, and certain PKC isoforms also contain a similar consensus phosphorylation site. Phosphorylation of these sites is required for kinase activity.
Catalog #	P4020
Applications	Suitable for use in ELISA, Western Blot and Immunoprecipitation. Other applications not tested.
Recommended Dilutions	ELISA (Peptide): 1:1000
	Western Blot: 1:1000
	Immunoprecipitation: 1:100
	Optimal dilutions to be determined by the researcher.
Storage and Stability	May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
Clone Type	Polyclonal
Isotype	IgG
Host	Rabbit
Concentration	Not Determined
Form	Supplied as a liquid in 10mM sodium HEPES, pH 7.5, 150mM sodium chloride, 0.1mg/ml BSA, 50% glycerol.
Purity	Purified by Protein A and peptide affinity chromatography.
Immunogen	Synthetic phosphoserine/threonine-phenylalanine containing peptide.
Specificity	Recognizes phosphoserine or threonine in the context of tyrosine, tryptophan or phenylalanine at the -1 position or phenylalanine at the +1 position (Y/F/W)(S*/T*)F. Does not recognize the nonphosphorylated form of these motifs, nor does it recognize other phosphoserine or threonine-containing proteins and peptides. Species Crossreactivity: Expected to crossreact with all species.
Important Note	This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.