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Anti-Phospho-FoxO3A (S253) antibody

[STJ90275] Download PDF Print Data Sheet
5-7 days

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Product name Anti-Phospho-FoxO3A (S253) antibody
Short Description Rabbit polyclonal to Phospho-FoxO3A (S253).
Description FoxO3A is a protein encoded by the FOXO3 gene which is approximately 71,2 kDa. FoxO3A is localised to the cytoplasm and nucleus. It is involved in RET signalling, GAB1 signalosome, glioma and common cytokine receptor gamma-chain family signalling pathways. It is a transcriptional activator which triggers apoptosis in the absence of survival factors, including neuronal cell death upon oxidative stress. It also participates in post-transcriptional regulation of MYC. FoxO3A is expressed ubiquitously. Mutations in the FOXO3 gene may result in secondary acute leukemia. STJ90275 was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen. This primary antibody specifically binds to endogenous FoxO3A protein which only binds about S253 when S253 is phosphorylated.
Applications ELISA, IF, IHC-p, WB
Dilution range WB 1:500-1:2000
IHC 1:100-1:300
IF 1:200-1:1000
ELISA 1:20000
Specificity Phospho-FoxO3A (S253) Polyclonal Antibody detects endogenous levels of FoxO3A protein only when phosphorylated at S253.
Protein Name Forkhead box protein O3
AF6q21 protein
Forkhead in rhabdomyosarcoma-like 1
Immunogen Synthesized peptide derived from human FoxO3A around the phosphorylation site of S253.
Immunogen Region 190-270 aa
Storage Instruction Store at -20°C, and avoid repeat freeze-thaw cycles.
Note For Research Use Only (RUO).
Host Rabbit
Clonality Polyclonal
Reactivity Mouse, Rat, Human
Conjugation Unconjugated
Concentration 1 mg/ml
Purification The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.
Isotype IgG
Formulation Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Gene ID 2309
Gene Symbol FOXO3
Molecular Weight 71 kDa
Database Links HGNC:3821
OMIM:602681
Alternative Names Anti-Phospho-FoxO3A (S253) antibody
Function Transcriptional activator which triggers apoptosis in the absence of survival factors, including neuronal cell death upon oxidative stress. Recognizes and binds to the DNA sequence 5'-[AG]TAAA[TC]A-3'. Participates in post-transcriptional regulation of MYC: following phosphorylation by MAPKAPK5, promotes induction of miR-34b and miR-34c expression, 2 post-transcriptional regulators of MYC that bind to the 3'UTR of MYC transcript and prevent its translation.
Post-translational Modifications In the presence of survival factors such as IGF-1, phosphorylated on Thr-32 and Ser-253 by AKT1/PKB. This phosphorylated form then interacts with 14-3-3 proteins and is retained in the cytoplasm. Survival factor withdrawal induces dephosphorylation and promotes translocation to the nucleus where the dephosphorylated protein induces transcription of target genes and triggers apoptosis. Although AKT1/PKB doesn't appear to phosphorylate Ser-315 directly, it may activate other kinases that trigger phosphorylation at this residue. Phosphorylated by STK4/MST1 on Ser-209 upon oxidative stress, which leads to dissociation from YWHAB/14-3-3-beta and nuclear translocation. Phosphorylated by PIM1. Phosphorylation by AMPK leads to the activation of transcriptional activity without affecting subcellular localization. Phosphorylation by MAPKAPK5 promotes nuclear localization and DNA-binding, leading to induction of miR-34b and miR-34c expression, 2 post-transcriptional regulators of MYC that bind to the 3'UTR of MYC transcript and prevent its translation . Phosphorylated by CHUK/IKKA and IKBKB/IKKB. TNF-induced inactivation of FOXO3 requires its phosphorylation at Ser-644 by IKBKB/IKKB which promotes FOXO3 retention in the cytoplasm, polyubiquitination and ubiquitin-mediated proteasomal degradation . May be dephosphorylated by calcineurin A on Ser-299 which abolishes FOXO3 transcriptional activity . Deacetylation by SIRT1 or SIRT2 stimulates interaction of FOXO3 with SKP2 and facilitates SCF(SKP2)-mediated FOXO3 ubiquitination and proteasomal degradation . Deacetylation by SIRT2 stimulates FOXO3-mediated transcriptional activity in response to oxidative stress . Heavily methylated by SET9 which decreases stability, while moderately increasing transcriptional activity. The main methylation site is Lys-271. Methylation doesn't affect subcellular location. Polyubiquitinated. Ubiquitinated by a SCF complex containing SKP2, leading to proteasomal degradation.
Cellular Localization Cytoplasm, cytosol Nucleus. Retention in the cytoplasm contributes to its inactivation. Translocates to the nucleus upon oxidative stress and in the absence of survival factors.
Tissue Specificity Ubiquitous.
Swiss-Prot Key O43524_HUMAN
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