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Preparation of anti-phosphoserine and anti-phosphothreonine antibodies and their application in the study of insulin- and EGF-induced phosphorylation. | ||
| Authors: | Kono, S, et al. | |
| Citation: | Biochem. Biophys. Res. Commun., 190: 283-8 (1993) | |
| Pub Med ID: | 8422254 | |
| Year: | 1993 | |
| Abstract: | We prepared antibodies against phosphoserine (P-Ser) and phosphothreonine (P-Thr) by immunizing rabbits with P-Ser or P-Thr conjugated to bovine serum albumin. The antibodies (anti-P-Ser and anti-P-Thr) were purified using P-Ser or P-Thr affinity columns. Anti-P-Thr was highly specific for P-Thr, while anti-P-Ser showed weak cross-reactivity with P-Thr. We showed that these antibodies can immunodetect serine/threonine phosphorylated insulin and epidermal growth factor (EGF) receptors and several proteins which are phosphorylated on serine/threonine residues in response to insulin or EGF stimulation. The antibodies will certainly provide a good tool for discovering novel kinases and substrates involved in signal transduction. | |
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