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Phosphotyrosine antibody

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Antigen
Reactivity
Chemical
110
52
43
29
28
27
25
9
9
5
1
Host
Rabbit
179
62
2
Clonality
Polyclonal
Conjugate
Un-conjugated
27
24
17
15
7
4
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
1
1
1
1
1
1
Application
Immunocytochemistry (ICC), Immunofluorescence (IF), Immunoprecipitation (IP), Immunohistochemistry (IHC), ELISA, Western Blotting (WB)
177
109
84
76
71
50
28
27
11
7
7
2
1
1
1
1
1
Supplier
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Immunogen Phosphotyrosine conjugated to KLH
Specificity Detects proteins phosphorylated on tyrosine residues. Does not cross-react with phosphoserine or threonine.
Purification Rabbit immunoglobulin
Background Protein phosphorylation is an important posttranslational modification that serves many key functions to regulate a protein's activity, localization, and protein-protein interactions. Phosphorylation is catalyzed by various specific protein kinases, which involves removing a phosphate group from ATP and covalently attaching it to to a recipient protein that acts as a substrate. Most kinases act on both serine and threonine, others act on tyrosine, and a number (dual specificity kinases) act on all three. Because phosphorylation can occur at multiple sites on any given protein, it can therefore change the function or localization of that protein at any time (1). Changing the function of these proteins has been linked to a number of diseases, including cancer, diabetes, heart disease, inflammation and neurological disorders (2-4). In particular, the phosphorylation of tyrosine is considered one of the key steps in signal transduction and regulation of enzymatic activity (5). Phosphotyrosine can be detected through specific antibodies, and are helpful in facilitating the identification of tyrosine kinase substrates (6).
Research Area Signaling, Metabolism, Amino Acids, Protein Modifications, Cell Signaling, Phosphorylation
Pathways
Application Notes Recommended Dilution: WB (1:500), ICC/IF (1:50), ELISA (1:2000), IP (1:100)
Optimal dilutions for assays should be determined by the user.
Restrictions For Research Use only
Format Liquid
Concentration 250 μg/mL
Buffer PBS pH 7.0, 0.01 % sodium azide
Preservative Sodium azide
Precaution of Use This product contains Sodium azide: a POISONOUS AND HAZARDOUS SUBSTANCE which should be handled by trained staff only.
Storage -20 °C
Background publications Goto, Kiyono, Tomono et al.: "Complex formation of Plk1 and INCENP required for metaphase-anaphase transition." in: Nature cell biology, Vol. 8, Issue 2, pp. 180-7, 2006 (PubMed).

Downward: "The ins and outs of signalling." in: Nature, Vol. 411, Issue 6839, pp. 759-62, 2001 (PubMed).

Blume-Jensen, Hunter: "Oncogenic kinase signalling." in: Nature, Vol. 411, Issue 6835, pp. 355-65, 2001 (PubMed).

Pawson, Saxton: "Signaling networks--do all roads lead to the same genes?" in: Cell, Vol. 97, Issue 6, pp. 675-8, 1999 (PubMed).

Ostrovsky, Maloy: "Protein phosphorylation on serine, threonine, and tyrosine residues modulates membrane-protein interactions and transcriptional regulation in Salmonella typhimurium." in: Genes & development, Vol. 9, Issue 16, pp. 2034-41, 1995 (PubMed).

Frackelton, Ross, Eisen: "Characterization and use of monoclonal antibodies for isolation of phosphotyrosyl proteins from retrovirus-transformed cells and growth factor-stimulated cells." in: Molecular and cellular biology, Vol. 3, Issue 8, pp. 1343-52, 1983 (PubMed).

Ross, Baltimore, Eisen: "Phosphotyrosine-containing proteins isolated by affinity chromatography with antibodies to a synthetic hapten." in: Nature, Vol. 294, Issue 5842, pp. 654-6, 1982 (PubMed).