Rabbit Polyclonal Phospho-FOXO3-S253 antibody (AP0351)


Reactivity: Human,Mouse,Rat
Applications: WB,IHC,IF
Conjugation: Unconjugated
Supplier: ABclonal Inc.

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Rabbit Polyclonal Phospho-FOXO3-S253 antibody (AP0351)

Supplier: ABclonal Inc.

Recommended applications: WB,IHC,IF

Recommended dilution:

WB 1:500 – 1:1000
IHC 1:50 – 1:100
IF 1:50 – 1:200

Recommended protocols: check protocols

Image descriptions:

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Alternative names:

Check alternative names for the antibody


FOXO2 antibody; AF6q21 antibody; FKHRL1 antibody; FOXO3A antibody; FKHRL1P2 antibody;
AFX1 antibody|FKH1 antibody|FKHRL1 antibody|FKHRL1P2 antibody|Forkhead box O1 antibody|Forkhead box O3 antibody|Forkhead box O4 antibody|FOXO1 antibody|FOXO2 antibody|FOXO3 antibody|FOXO4 antibody|MLLT7 antibody|Phospho anti-FOXO1 + FOXO3 + FOXO4 (T24 + T32) antibody (ab58517)

SCBT cat No: sc-34894|sc-34895|sc-48348|sc-11351|sc-34897|sc-9813|sc-9812|sc-48503|sc-374642|sc-48506|


Rabbit Polyclonal Phospho-FOXO3-S253 antibody

Catalogue No.



Human, Mouse, Rat


A phospho specific peptide corresponding to residues surrounding S253 of human FOXO3











Molecular weight



Phospho-FOXO3-S253 antibody was tube-contained.
Buffer: PBS with 0.02% sodium azide, 50% glycerol, pH7.3.


Affinity purification


Store at -20 Celsius degree. Avoid freeze / thaw cycles.

Alternative antibody names

FOXO2 antibody; AF6q21 antibody; FKHRL1 antibody; FOXO3A antibody; FKHRL1P2 antibody;

Protein names


Protein 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.

Protein tissue specificity


Protein sequence and domain

Contains 1 fork-head DNA-binding domain.

Protein 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 (PubMed:10102273, PubMed:11154281, PubMed:16751106, PubMed:17711846, PubMed:18593906, PubMed:21329882). 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 (PubMed:15084260). May be dephosphorylated by calcineurin A on Ser-299 which abolishes FOXO3 transcriptional activity (By similarity).; Deacetylation by SIRT1 or SIRT2 stimulates interaction of FOXO3 with SKP2 and facilitates SCF(SKP2)-mediated FOXO3 ubiquitination and proteasomal degradation (PubMed:21841822). Deacetylation by SIRT2 stimulates FOXO3-mediated transcriptional activity in response to oxidative stress (By similarity).; 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.

Protein cellular localization

Cytoplasm, cytosol . Nucleus . Note=Retention in the cytoplasm contributes to its inactivation. Translocates to the nucleus upon oxidative stress and in the absence of survival factors.


This gene belongs to the forkhead family of transcription factors which are characterized by a distinct forkhead domain. This gene likely functions as a trigger for apoptosis through expression of genes necessary for cell death. Translocation of this gene with the MLL gene is associated with secondary acute leukemia. Alternatively spliced transcript variants encoding the same protein have been observed.

Research area

<a href="http://antibodyplus.com/research-areas/">All research areas</a>><a href="http://antibodyplus.com/Transcription-Regulators/">Transcription Regulators</a>><a href="http://antibodyplus.com/product-tag/FKHR/">FKHR</a><br><a href="http://antibodyplus.com/product-tag/Transcription-Regulators/"&gt; (View all antibody categories related to Transcription Regulators)</a>


AntibodyPlus can customize Phospho-FOXO3-S253 antibody according to your requirement, including bulk product size,etc. Please contact info@antibodyplus.com. AntibodyPlus provides antibody trial sample for your own antibody validation.

Product type

Primary antibody


ABclonal Inc.


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