质量标准:【产品介绍】4E-BP1 (eIF4E-binding protein) also known
as PHAS, is a 10-12 kDa acidic protein that compete
with eIF4G for binding of eIF4E to the mRNA 5 cap
structure (1). Binding of the 4E-BPs to eIF4E is
reversible and is dependent on the phosphorylation
status of 4E-BP1. Non-phosphorylated 4E-BP1 will
bind strongly to eIF4E while, the phosphorylated form
will no (2). Akt, TOR, MAP kinase, S6 kinase, and Cdc2
are known kinases capable of inactivating 4E-BP1
binding to eIF4E by phosphorylating either threonines
35, 45, 70 or serine 64. Although, not all
phosphorylation events equally block the
4EBP1-eIF4E interaction (3). It has been reported
previously that phosphorylation of 4E-BP1 on Thr 37
and Thr 46 is relatively insensitive to serum
deprivation and rapamycin treatment, and that phosphorylation of these residues is required
for the subsequent phosphorylation of a set of
unidentified serum-responsive sites (4)
Recommended Applications
WB
Applications and Recommended Dilution Factors
WB: 1:1000 - 2000
Species Reactivity *
Human, Mouse
*Cross reactivity determined by western blot only.
Specificity
A phospho specific peptide corresponding to
residues surrounding threonine 37 was used as an
immunogen. This antibody detects 4E-BP1 phosphorylated
at threonine 37.