Phospho-STAT3 (Tyr705) Antibody

Cat. No.: HY-P80857: Data Sheet COA
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Phospho-STAT3 (Tyr705) Antibody is a Rabbit-derived and non-conjugated IgG polyclonal antibody, targeting to Phospho-STAT3 (Tyr705).

For research use only. We do not sell to patients.

Size	Stock	Quantity
20 μL	In-stock	Estimated Time of Arrival: December 31
50 μL	In-stock	Estimated Time of Arrival: December 31
100 μL	In-stock	Estimated Time of Arrival: December 31
250 μL	Get quote

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Phospho-STAT3 (Tyr705) Antibody Featured Recommendations:

1 Publications Citing Use of MCE Phospho-STAT3 (Tyr705) Antibody

•Genes Dis. 2025 Jun 9.

: Phospho-STAT3 (Tyr705) Antibody purchased from MCE. Usage Cited in: Genes Dis. 2025 Jun 9.; Western blotting analysis and quantification of the expression levels of p-STAT3 (Phospho-STAT3), STAT3, and PD-L1 in RAW264.7 cells co-cultured with TC-1 cells. β-actin is used as a loading control. n = 3.

WB: Western Blot;
IHC-P: Immunohistochemistry-Paraffin;
IHC-F: Immunohistochemistry-Frozen;
ICC/IF: Immunocytochemistry/Immunofluorescence;
IF-Tissue: Immunofluorescence-Tissue;
mIHC: Multiplex Immunohistochemical;
IP: Immunoprecipitation;
ChIP: Chromatin Immunoprecipitation;
FC: Flow Cytometry;
ELISA: Enzyme Linked Immunosorbent Assay

Product Detail
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Background
Documentation

Description

Phospho-STAT3 (Tyr705) Antibody is a Rabbit-derived and non-conjugated IgG polyclonal antibody, targeting to Phospho-STAT3 (Tyr705).

Host

Rabbit

Clonality

Polyclonal

Molecular Weight

Predicted band size: 88 kDa;

Observed band size: 88 kDa

Note: Due to possible protein modifications or aggregation, the molecular weight should be confirmed by actual measurement, and the predicted value is for reference only.

Species Reactivity

Human, Mouse, Rat

SwissProt ID

P40763

Gene ID

6774 [NCBI]

Immunogen

Synthetic phosphopeptide corresponding to residues surrounding Tyr705 of Human STAT3.The exact sequence is proprietary to MCE.

Application &
Dilution Ratio

Application	Dilution Ratio
WB WB: Western Blot	1:500-1:1000
IHC-P IHC-P: Immunohistochemistry-Paraffin	1:50-1:100
ICC/IF ICC/IF: Immunocytochemistry/Immunofluorescence	1:50-1:200
IP IP: Immunoprecipitation	1:20

Sensitivity	Endogenous	Purity	affinity purified
Conjugation	Non-conjugated	Modification	Phosphorylated
Isotype	IgG

Appearance

Liquid

Formulation

Supplied in 50mM Tris-Glycine(pH 7.4), 0.15M NaCl, 40%Glycerol, 0.01% sodium azide and 0.05% BSA.

Storage & Stability

Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.

Shipping

Shipping with blue ice.

Verification Image

IHC-P

Immunohistochemical analysis of paraffin-embedded Mouse colon tissue using Phospho-STAT3 (Tyr705) Antibody. The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 8 minutes. The tissues were blocked in QuickBlock for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (HY-P80857, 1/100) in 4℃ overnight. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Immunohistochemical analysis of paraffin-embedded Mouse colon tissue using Phospho-STAT3 (Tyr705) Antibody. The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 8 minutes. The tissues were blocked in QuickBlock for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (HY-P80857, 1/100) in 4℃ overnight. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.

Background

Function：Signal transducer and transcription activator that mediates cellular responses to interleukins, KITLG/SCF, LEP and other growth factors (PubMed:10688651, PubMed:12359225, PubMed:12873986, PubMed:15194700, PubMed:15653507, PubMed:16285960, PubMed:17344214, PubMed:18242580, PubMed:18782771, PubMed:22306293, PubMed:23084476, PubMed:28262505, PubMed:32929201, PubMed:38404237). Once activated, recruits coactivators, such as NCOA1 or MED1, to the promoter region of the target gene (PubMed:15653507, PubMed:16285960, PubMed:17344214, PubMed:18782771, PubMed:28262505, PubMed:32929201). May mediate cellular responses to activated FGFR1, FGFR2, FGFR3 and FGFR4 (PubMed:12873986). Upon activation of IL6ST/gp130 signaling by interleukin-6 (IL6), binds to the IL6-responsive elements identified in the promoters of various acute-phase protein genes (PubMed:12359225). Activated by IL31 tH2O2gh IL31RA (PubMed:15194700). Acts as a regulator of inflammatory response by regulating differentiation of naive CD4(+) T-cells into T-helper Th17 or regulatory T-cells (Treg): acetylation promotes its transcription activity and cell differentiation while deacetylation and oxidation of lysine residues by LOXL3 inhibits differentiation (PubMed:28065600, PubMed:28262505). Involved in cell cycle regulation by inducing the expression of key genes for the progression from G1 to S phase, such as CCND1 (PubMed:17344214). Mediates the effects of LEP on melanocortin production, body energy homeostasis and lactation (By similarity). May play an apoptotic role by transctivating BIRC5 expression under LEP activation (PubMed:18242580). Cytoplasmic STAT3 represses macroautophagy by inhibiting EIF2AK2/PKR activity (PubMed:23084476). Plays a crucial role in basal beta cell functions, such as regulation of insulin secretion (By similarity). Following JAK/STAT signaling activation and as part of a complex with NFATC3 and NFATC4, binds to the alpha-beta E4 promoter region of CRYAB and activates transcription in cardiomyocytes (By similarity)

Subcellular Localization：Cytoplasm; Nucleus

Expression：
Tissue_specificity:Heart, brain, placenta, lungs, liver, skeletal muscle, kidneys, and pancreas. Expressed in nave CD4 (+) T cells as well as helper T cells Th17, Th1, and Th2 (PubMed:31899195) .

Isoforms & Post-Translational Modification：P40763 has 3 isomers: P40763-1: 88068 Da (predicted); P40763-2: 87981 Da (predicted); P40763-3: 83126 Da (predicted).
Tyrosine phosphorylated upon stimulation with EGF. Tyrosine phosphorylated in response to constitutively activated FGFR1, FGFR2, FGFR3 and FGFR4 (By similarity). Activated tH2O2gh tyrosine phosphorylation by BMX. Tyrosine phosphorylated in response to IL6, IL11, LIF, CNTF, KITLG/SCF, CSF1, EGF, PDGF, IFN-alpha, LEP and OSM. Activated KIT promotes phosphorylation on tyrosine residues and subsequent translocation to the nucleus. Phosphorylated on serine upon DNA damage, probably by ATM or ATR. Serine phosphorylation is important for the formation of stable DNA-binding STAT3 homodimers and maximal transcriptional activity. ARL2BP may participate in keeping the phosphorylated state of STAT3 within the nucleus. Upon LPS challenge, phosphorylated within the nucleus by IRAK1. Upon erytH2O2oietin treatment, phosphorylated on Ser-727 by RPS6KA5. Dephosphorylation on tyrosine residues by PTPN2 negatively regulates IL6/interleukin-6 signaling (By similarity). Phosphorylation at Tyr-705 by PTK6, isoform M2 of PKM (PKM2) or FER leads to an increase of its transcriptional activity (PubMed:12763138, PubMed:16568091, PubMed:21135090, PubMed:22306293, PubMed:32929201). Phosphorylation at Tyr-705 is increased in the presence of calcineurin (By similarity). Phosphorylation at Tyr-640 by TYK2 negatively regulates transcriptional activity (PubMed:29162862);Acetylated on lysine residues by EP300/p300, promoting its activation (PubMed:15653507, PubMed:16285960, PubMed:18782771). Acetylation at Lys-49 and Lys-87 by EP300/p300 promotes its activation (PubMed:15653507, PubMed:16285960, PubMed:28262505). Acetylation at Lys-87 by EP300/p300 promotes its association with BRD2 and recruitment to cH2O2atin (PubMed:28262505). Deacetylated at Lys-49 and Lys-87 by HDAC1 (PubMed:16285960). Acetylation at Lys-685 by EP300/p300 promotes its homodimerization and activation (PubMed:15653507). Deacetylated at Lys-685 by HDAC3 (PubMed:15653507). Acetylated on lysine residues by CREBBP (PubMed:28065600). Deacetylation by LOXL3 leads to disrupt STAT3 dimerization and inhibit STAT3 transcription activity (PubMed:28065600). Oxidation of lysine residues to allysine on STAT3 preferentially takes place on lysine residues that are acetylated (PubMed:28065600);Some lysine residues are oxidized to allysine by LOXL3, leading to disrupt STAT3 dimerization and inhibit STAT3 transcription activity (PubMed:28065600). Oxidation of lysine residues to allysine on STAT3 preferentially takes place on lysine residues that are acetylated (PubMed:28065600);(Microbial infection) Phosphorylated on Tyr-705 in the presence of S.typhimurium SarA

Subunit：Forms a homodimer or a heterodimer with a related family member (at least STAT1) (PubMed:15653507, PubMed:28065600). Component of a promoter-binding complex composed of STAT3, NFATC3 and NFATC4; complex formation is enhanced by calcineurin (By similarity). Interacts with IL31RA, NCOA1, PELP1, SIPAR, SOCS7, STATIP1 and TMF1 (By similarity) (PubMed:15194700, PubMed:15467733, PubMed:15677474, PubMed:15994929, PubMed:17344214). Interacts with IL23R in presence of IL23 (PubMed:12023369). Interacts (via SH2 domain) with NLK. Interacts with ARL2BP; the interaction is enhanced by LIF and JAK1 expression (By similarity). Interacts with KPNA4 and KPNA5; KPNA4 may be the primary mediator of nuclear import (By similarity). Interacts with CAV2; the interaction is increased on insulin-induced tyrosine phosphorylation of CAV2 and leads to STAT3 activation (By similarity). Interacts with ARL2BP; interaction is enhanced with ARL2 (PubMed:18234692). Interacts with NEK6 (By similarity). Binds to CDK9 when activated and nuclear (PubMed:17956865). Interacts with BMX (PubMed:10688651). Interacts with ZIPK/DAPK3 (PubMed:16219639). Interacts with PIAS3; the interaction occurs on stimulation by IL6, CNTF or OSM and inhibits the DNA binding activity of STAT3 (PubMed:9388184). In prostate cancer cells, interacts with PRKCE and promotes DNA binding activity of STAT3 (PubMed:17875724). Interacts with STMN3, antagonizing its microtubule-destabilizing activity (By similarity). Interacts with the 'Lys-129' acetylated form of BIRC5/survivin (PubMed:20826784). Interacts with FER (PubMed:19147545). Interacts (via SH2 domain) with EIF2AK2/PKR (via the kinase catalytic domain) (PubMed:23084476). Interacts with INPP5F; the interaction is independent of STAT3 Tyr-705 phosphorylation status (PubMed:25476455). Interacts with FGFR4 (PubMed:26675719). Interacts witH2O2IAD1 (By similarity). Interacts witH2O2IAD2 (PubMed:29743632). Interacts (unphosphorylated or phosphorylated at Ser-727) with PHB1 (PubMed:31899195). Interacts and may form heterodimers with NHLH1 (By similarity). Found in a complex with SLC39A6, SLC39A10 and with the 'Ser-727' phosphorylated form of STAT3 tH2O2ghout mitosis (PubMed:32797246). Interacts (when phosphorylated at Tyr-705) with CD274/PD-L1; promoting nuclear translocation of CD274/PD-L1 (PubMed:32929201). Interacts (when acetylated) with EP300 (via bromo domain); interaction takes place following STAT3 acetylation by EP300 and promotes enhanceosome assembly (PubMed:18782771). Interacts (when acetylated) with BRD2 (via bromo domain); interaction promotes STAT3 recruitment to cH2O2atin and T-helper Th17 cell differentiation (PubMed:28262505). Interacts with FAM220A/SIPAR; the interaction occurs in both the nucleus and the cytoplasm, is enhanced by IL6 and promotes STAT3 dephosphorylation (By similarity). Interacts in both unphosphorylated and phosphorylated forms with FAM220A but interacts preferentially in the phosphorylated form in the nucleus (By similarity). Interacts with PTPN2; the interaction is promoted by FAM220A and leads to STAT3 dephosphorylation which negatively regulates STAT3 transcriptional activator activity (By similarity)

RRID

AB_3102233

Database

Entrez Gene: 6774 Human ; 20848 Mouse ; 25125 Rat

SwissProt: P40763 Human ; P42227 Mouse ; P52631 Rat

OMIM: 147060 Human

Research Field

Signal Transduction

Synonyms

STAT3; APRF; Signal transducer and activator of transcription 3; Acute-phase response factor

Documentation

Select Batch:

Data Sheet (235 KB) SDS (252 KB)

COA (206 KB)

User Guide for Antibodies (1077 KB)

Phospho-STAT3 (Tyr705) Antibody Related Classifications

Help & FAQs

Do most proteins show cross-species activity?
Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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Phospho-STAT3 (Tyr705) Antibody

Phospho-STAT3 (Tyr705) Antibody Featured Recommendations:

1 Publications Citing Use of MCE Phospho-STAT3 (Tyr705) Antibody

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Phospho-STAT3 (Tyr705) Antibody Related Classifications

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