SRP5162
4EBP1, His tagged human
recombinant, expressed in baculovirus infected Sf9 cells, ≥70% (SDS-PAGE), buffered aqueous glycerol solution
Synonym(s):
BP-1, EIF4EBP1, MGC4316, PHAS-I
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About This Item
biological source
human
recombinant
expressed in baculovirus infected Sf9 cells
Assay
≥70% (SDS-PAGE)
form
buffered aqueous glycerol solution
mol wt
~18 kDa
NCBI accession no.
application(s)
cell analysis
shipped in
dry ice
storage temp.
−70°C
Gene Information
human ... EIF4EBP1(1978)
General description
Eukaryotic translation initiation factor 4E binding protein 1 (E1F4EBP1) is part of the translation repressor protein family. The gene encoding it is localized on human chromosome 8p11-p12.
Biochem/physiol Actions
Eukaryotic translation initiation factor 4E binding protein 1 (E1F4EBP1) is involved in protein synthesis, cell growth and survival. In the unphosphorylated form, it suppresses the translation initiation of capped mRNAs, whereas in phosphorylated form, it increases translation initiation. Phosphorylation of E1F4EBP1 releases it from eukaryotic translation initiation factor 4E (eIF4E) and this results in cap-dependent translation. The protein is also involved in tumorigenesis and the gene is overexpressed in various carcinomas. It is also a substrate for mTORC1 (mammalian target of rapamycin complex 1). In non-phosphorylated conditions, E1F4EBP1 interacts with p21 (cyclin-dependent kinase inhibitor) and enhances destabilization of p21.
Physical form
Supplied in 50mM sodium phosphate, pH 7.0, 300mM NaCl, 150mM imidazole, 0.1mM PMSF, 0.25mM DTT, 25% glycerol.
Preparation Note
after opening, aliquot into smaller quantities and store at -70 °C. Avoid repeating handling and multiple freeze/thaw cycles
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Repr. 1B - Skin Irrit. 2
WGK
WGK 1
Regulatory Information
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MicroRNAs 125a and 125b inhibit ovarian cancer cells through post-transcriptional inactivation of EIF4EBP1.
Lee M
Oncotarget (2016)
Stabilization of p21 by mTORC1/4E-BP1 predicts clinical outcome of head and neck cancers.
Llanos S
Nature Communications (2016)
A Pause et al.
Nature, 371(6500), 762-767 (1994-10-27)
The cloning is described of two related human complementary DNAs encoding polypeptides that interact specifically with the translation initiation factor eIF-4E, which binds to the messenger RNA 5'-cap structure. Interaction of these proteins with eIF-4E inhibits translation but treatment of
4E-BP1, a multifactor regulated multifunctional protein.
Qin X
Cell Cycle (2016)
K Tsukiyama-Kohara et al.
Genomics, 38(3), 353-363 (1996-12-15)
Two related eukaryotic initiation factor-4E binding proteins (4E-BP1 and 4E-BP2) were recently characterized for their capacity to bind specifically to eIF4E and inhibit its function. Here, we determined the cDNA sequence, tissue distribution, genomic structure, and chromosome localization of murine
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