Rabbit 4E-BP1 Polyclonal Antibody | anti-4E-BP1 antibody

Phospho-4E-BP1 (Thr36) Antibody

Cat. Num. AAA9614046

• Gene Names: EIF4EBP1; BP-1; 4EBP1; 4E-BP1; PHAS-I
• Reactivity: Human, Mouse, Rat; Predicted Reactivity: Pig (100%), Zebrafish (100%), Bovine (100%), Horse (100%), Sheep (100%), Rabbit (100%), Dog (100%), Chicken (100%)
• Applications: Western Blot, Immunohistochemistry, Immunofluorescence, Immunocytochemistry, ELISA
• Purity: The antibody is from purified rabbit serum by affinity purification via sequential chromatography on phospho-peptide and non-phospho-peptide affinity columns.
• Synonyms: 4E-BP1; Polyclonal Antibody; Phospho-4E-BP1 (Thr36) Antibody; 4EBP1; 4EBP1_HUMAN; BP 1; eIF4E binding protein 1; eIF4E-binding protein 1; Eif4ebp1; Eukaryotic translation initiation factor 4E-binding protein 1; PHAS-I; PHASI; Phosphorylated heat- and acid-stable protein regulated by insulin 1; anti-4E-BP1 antibody

• Host: Rabbit
• Reactivity: Human, Mouse, Rat; Predicted Reactivity: Pig (100%), Zebrafish (100%), Bovine (100%), Horse (100%), Sheep (100%), Rabbit (100%), Dog (100%), Chicken (100%)
• Clonality: Polyclonal
• Isotype: Rabbit IgG
• Specificity: Phospho-4E-BP1 (Thr36) Antibody detects endogenous levels of 4E-BP1 only when phosphorylated at Thr36.
• Purity/Purification: The antibody is from purified rabbit serum by affinity purification via sequential chromatography on phospho-peptide and non-phospho-peptide affinity columns.
• Form/Format: Liquid. Rabbit IgG in phosphate buffered saline, pH7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
• Concentration: 1mg/ml (varies by lot)

• Applicable Applications for anti-4E-BP1 antibody: Western Blot (WB), Immunohistochemistry (IHC), Immunofluorescence (IF), Immunocytochemistry (ICC), Peptide ELISA (EIA)
• Application Notes: WB: 1:1000-3000; IHC: 1:50-1:200; IF/ICC: 1:100-1:500; Peptide ELISA: 1:20,000-1:40,000
• Immunogen: A synthesized peptide derived from human 4E-BP1 around the phosphorylation site of Thr36.
• Conjugation: Unconjugated
• Fragment: Fab fragment
• Post Translational Modifications: Phosphorylated on serine and threonine residues in response to insulin, EGF and PDGF. Phosphorylation at Thr-37, Thr-46, Ser-65 and Thr-70, corresponding to the hyperphosphorylated form, is regulated by mTORC1 and abolishes binding to EIF4E.Ubiquitinated: when eIF4E levels are low, hypophosphorylated form is ubiquitinated by the BCR (KLHL25) complex, leading to its degradation and serving as a homeostatic mechanism to maintain translation and prevent eIF4E inhibition when eIF4E levels are low. Not ubiquitinated when hyperphosphorylated (at Thr-37, Thr-46, Ser-65 and Thr-70) or associated with eIF4E.
• Subunit Structure: Hypophosphorylated EIF4EBP1 competes with EIF4G1/EIF4G3 to interact with EIF4E; insulin stimulated MAP-kinase (MAPK1 and MAPK3) or mTORC1 phosphorylation of EIF4EBP1 causes dissociation of the complex allowing EIF4G1/EIF4G3 to bind and consequent initiation of translation. Interacts (via TOS motif) with RPTOR; promoting phosphorylation by mTORC1.
• Similarity: The TOS motif mediates interaction with RPTOR, leading to promote phosphorylation by mTORC1 complex.Belongs to the eIF4E-binding protein family.
• Preparation and Storage: Store at -20 degree C. Stable for 12 months from date of receipt.

Western Blot (WB)

(Western blot analysis of 4E-BP1 (Phospho-Thr36) using Mouse brain tissue lysates.-/+ means absence or presence of N peptide（non-phospho peptide) and P peptide(phospho peptide).)

Immunohistochemistry (IHC)

(Staining Rat kidney tissue sections by IHC-P. The tissue was formaldehyde fixed and a heat mediated antigen retrieval step in citrate buffer was performed. The tissue was then blocked and incubated with the antibody for 1.5 hours at 22 degree C. An HRP conjugated goat anti-rabbit antibody was used as the secondary antibody.)

Immunohistochemistry (IHC)

(At 1/200 staining Mouse kidney tissue sections by IHC-P. The tissue was formaldehyde fixed and a heat mediated antigen retrieval step in citrate buffer was performed. The tissue was then blocked and incubated with the antibody for 1.5 hours at 22 degree C. An HRP conjugated goat anti-rabbit antibody was used as the secondary antibody.)

Immunohistochemistry (IHC)

(At 1/200 staining Human kidney tissue sections by IHC-P. The tissue was formaldehyde fixed and a heat mediated antigen retrieval step in citrate buffer was performed. The tissue was then blocked and incubated with the antibody for 1.5 hours at 22 degree C. An HRP conjugated goat anti-rabbit antibody was used as the secondary antibody.)

Testing Data

(At 25 degree C. The primary antibody was diluted at 1/200 and incubated with the sample for 1 hour at 37 degree C. An Alexa Fluor 594 conjugated goat anti-rabbit IgG (H+L) Ab, diluted at 1/600, was used as the secondary antibody.)

Related Product Information for anti-4E-BP1 antibody

Repressor of translation initiation that regulates EIF4E activity by preventing its assembly into the eIF4F complex: hypophosphorylated form competes with EIF4G1/EIF4G3 and strongly binds to EIF4E, leading to repress translation. In contrast, hyperphosphorylated form dissociates from EIF4E, allowing interaction between EIF4G1/EIF4G3 and EIF4E, leading to initiation of translation. Mediates the regulation of protein translation by hormones, growth factors and other stimuli that signal through the MAP kinase and mTORC1 pathways.

NCBI and Uniprot Product Information

• NCBI GI #: 4758258
• NCBI GeneID: 1978
• NCBI Accession #: NP_004086.1
• NCBI GenBank Nucleotide #: NM_004095.3
• UniProt Accession #: Q13541; Q6IBN3; B2R502; D3DSW8
• Molecular Weight: 12,580 Da
• NCBI Official Full Name: eukaryotic translation initiation factor 4E-binding protein 1
• NCBI Official Synonym Full Names: eukaryotic translation initiation factor 4E binding protein 1
• NCBI Official Symbol: EIF4EBP1
• NCBI Official Synonym Symbols: BP-1; 4EBP1; 4E-BP1; PHAS-I
• NCBI Protein Information: eukaryotic translation initiation factor 4E-binding protein 1; eIF4E-binding protein 1; phosphorylated heat- and acid-stable protein regulated by insulin 1
• UniProt Protein Name: Eukaryotic translation initiation factor 4E-binding protein 1
• UniProt Gene Name: EIF4EBP1
• UniProt Synonym Gene Names: 4E-BP1; eIF4E-binding protein 1; PHAS-I
• UniProt Entry Name: 4EBP1_HUMAN

NCBI Description

This gene encodes one member of a family of translation repressor proteins. The protein directly interacts with eukaryotic translation initiation factor 4E (eIF4E), which is a limiting component of the multisubunit complex that recruits 40S ribosomal subunits to the 5' end of mRNAs. Interaction of this protein with eIF4E inhibits complex assembly and represses translation. This protein is phosphorylated in response to various signals including UV irradiation and insulin signaling, resulting in its dissociation from eIF4E and activation of mRNA translation. [provided by RefSeq, Jul 2008]

Uniprot Description

4E-BP1: binds to eIF4E, preventing its assembly into the EIF4F complex and inhibiting cap-dependent translation. Phosphorylation of 4E-BP1 disrupts this binding, activating cap-dependent translation. Mediates the regulation of protein translation by hormones, growth factors and other stimuli that signal through the PI3 kinase pathway.

Protein type: Translation; Translation initiation

Chromosomal Location of Human Ortholog: 8p12

Cellular Component: nucleoplasm; protein complex; cytoplasm; cytosol

Molecular Function: protein binding; translation repressor activity; eukaryotic initiation factor 4E binding

Biological Process: negative regulation of translational initiation; response to ethanol; cellular protein metabolic process; TOR signaling pathway; translation; insulin receptor signaling pathway; translational initiation; gene expression; positive regulation of mitotic cell cycle; negative regulation of protein complex assembly; G1/S transition of mitotic cell cycle; lung development