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4E Binding Protein 1 (Eukaryotic Translation Initiation Factor 4E Binding Protein 1, eIF4E Binding Protein 1, eIF4EBP1, 4EBP1, 4E-BP1, BP-1, MGC4316, Phosphorylated Heat- and Acid-stable Protein Regulated by Insulin 1, PHAS-1, PHAS I, PHAS-I)

Cat no: 0004-21A

4E Binding Protein 1 (Eukaryotic Translation Initiation Factor 4E Binding Protein 1, eIF4E Binding Protein 1, eIF4EBP1, 4EBP1, 4E-BP1, BP-1, MGC4316, Phosphorylated Heat- and Acid-stable Protein Regulated by Insulin 1, PHAS-1, PHAS I, PHAS-I)

Translation repressor protein 4E-BP1 (also known as PHAS-1) inhibits cap-dependent translation by binding to the eIF4E translation initiation factor. Hyperphosphorylation of 4E-BP1 disrupts this interaction and results in activation of cap-dependent translation (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-BP1 to eIF4E, it is thought to prime 4E-BP1 for subsequent phosphorylation at Ser65 and Thr70 (5).\n\nApplications:\nSuitable for use in Immunofluorescence, Flow Cytometry, Western Blot, Immunoprecipitation and Immunohistochemistry. Other applications not tested.\n\nRecommended Dilution:\nImmunofluorescence (IF-IC): 1:400\nFlow Cytometry: 1:200\nWestern Blot: 1:1000\nImmunoprecipitation: 1:50\nImmunohistochemistry (Paraffin): 1:600\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. For long-term storage and to avoid repeated freezing and thawing, aliquot and store at -20 degrees C. Aliquots are stable for at least 12 months at -20 degrees 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.

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SPECIFICATIONS

Catalog Number

0004-21A

Size

100ul

Applications

FC, IF, IHC, IP, WB

Hosts

Rabbit

Reactivities

Hum, Mouse, Rat, NHP

Form

Supplied as a liquid in 10mM sodium HEPES pH 7.5, 150mM NaCl, 0.1mg/ml BSA, < 0.02% sodium azide, 50% glycerol.

P Type

Mab

Purity

Supernatant

Isotype

IgG

Additional Info

Recognizes endogenous levels of human total 4E-BP1 protein. Species Crossreactivity: monkey, mouse, rat.

Alternative Names

Protein Synthesis Initiation Factor 4E Binding Protein

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