Anti-phospho-4E Binding Protein 1, non (Thr46) (4E-BP1, PHAS-1)

4E-BP1 (also known as PHAS-1) when bound to eIF4E, inhibits cap-dependent translation. Upon hyperphosphorylation of 4E-BP1 this interaction is disrupted and cap-dependent translation is activated (1). Both the PI3 kinase/Akt pathway and FRAP/mTOR kinase regulate 4E-BP1 activity (2,3). Multiple 4E-BP1 residues are phosphorylated in vivo (4), while phosphorylation by FRAP/mTOR on Thr37 and Thr46 does not prevent the binding of 4E-BP-1 to eIF4E, it is thought to prime 4E-BP1 for subsequent phosphorylation at Ser65 and Thr70 (5). Applications: Suitable for use in Flow Cytometry, Immunofluorescence, Western Blot. Other applications not tested. Recommended Dilution: Western Blot: 1:1000, Flow Cytometry: 1:200, Immunofluorescence (IF-IC): 1:200, Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4°C for short-term only. For long-term storage, store at -20°C. Aliquots are stable for at least 12 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.