Phospho-STAT1 (Tyr701) Antibody | Affinity Biosciences

Product:	Phospho-STAT1 (Tyr701) Antibody
Catalog:	AF3300
Description:	Rabbit polyclonal antibody to Phospho-STAT1 (Tyr701)
Application:	WB IHC IF/ICC IP
Cited expt.:	WB, IHC, IF/ICC
Reactivity:	Human, Mouse, Rat
Prediction:	Pig, Bovine, Horse, Rabbit, Dog, Chicken, Xenopus
Mol.Wt.:	84kDa; 87kD(Calculated).
Uniprot:	P42224
RRID:	AB_2834719

View similar products>>

Blocking peptides are peptides that bind specifically to the target antibody and block antibody binding. These peptide usually contains the epitope recognized by the antibody. Antibodies bound to the blocking peptide no longer bind to the epitope on the target protein. By comparing the staining from the blocked antibody versus the antibody alone, one can see which staining is specific.

Size	Price	Inventory
100ul	$280	In stock
200ul	$350	In stock

Lead Time: Same day delivery

For pricing and ordering contact:
Local distributors

Related Downloads

MSDS

Data Sheet

COA

Protocols

WB Handbook

IHC Protocol

IF/ICC Protocol

Product Info

Source:

Rabbit

Application:

WB 1:500-1:2000, IHC 1:50-1:200, IP, IF/ICC 1:100-1:500
*The optimal dilutions should be determined by the end user.
*Tips:

WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.

Reactivity:

Human,Mouse,Rat

Prediction:

Pig(100%), Bovine(100%), Horse(100%), Rabbit(100%), Dog(100%), Chicken(80%), Xenopus(100%)

Clonality:

Polyclonal

Specificity:

Phospho-STAT1 (Tyr701) Antibody detects endogenous levels of STAT1 only when phosphorylated at Tyrosine 701.

RRID:

AB_2834719
Cite Format: Affinity Biosciences Cat# AF3300, RRID:AB_2834719.

Conjugate:

Unconjugated.

Purification:

The antibody is from purified rabbit serum by affinity purification via sequential chromatography on phospho-peptide and non-phospho-peptide affinity columns.

Storage:

Rabbit IgG in phosphate buffered saline , pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol. Store at -20 °C. Stable for 12 months from date of receipt.

Alias:

Fold/Unfold

CANDF7; DKFZp686B04100; ISGF 3; ISGF3; OTTHUMP00000163552; OTTHUMP00000165046; OTTHUMP00000165047; OTTHUMP00000205845; Signal transducer and activator of transcription 1; Signal transducer and activator of transcription 1, 91kDa; Signal transducer and activator of transcription 1-alpha/beta; Stat1; STAT1_HUMAN; STAT91; Transcription factor ISGF-3 components p91/p84;

Immunogens

Immunogen:

A synthesized peptide derived from human STAT1 around the phosphorylation site of Tyr701.

Uniprot:

P42224(STAT1_HUMAN) >>Visit HPA database.

Gene(ID):

STAT1(6772)

Description:

The protein encoded by this gene is a member of the STAT protein family. In response to cytokines and growth factors, STAT family members are phosphorylated by the receptor associated kinases, and then form homo- or heterodimers that translocate to the cell nucleus where they act as transcription activators.

Sequence:

P42224 STAT1_HUMAN:
Protein BLAST With
NCBI/
ExPASy/
Uniprot

MSQWYELQQLDSKFLEQVHQLYDDSFPMEIRQYLAQWLEKQDWEHAANDVSFATIRFHDLLSQLDDQYSRFSLENNFLLQHNIRKSKRNLQDNFQEDPIQMSMIIYSCLKEERKILENAQRFNQAQSGNIQSTVMLDKQKELDSKVRNVKDKVMCIEHEIKSLEDLQDEYDFKCKTLQNREHETNGVAKSDQKQEQLLLKKMYLMLDNKRKEVVHKIIELLNVTELTQNALINDELVEWKRRQQSACIGGPPNACLDQLQNWFTIVAESLQQVRQQLKKLEELEQKYTYEHDPITKNKQVLWDRTFSLFQQLIQSSFVVERQPCMPTHPQRPLVLKTGVQFTVKLRLLVKLQELNYNLKVKVLFDKDVNERNTVKGFRKFNILGTHTKVMNMEESTNGSLAAEFRHLQLKEQKNAGTRTNEGPLIVTEELHSLSFETQLCQPGLVIDLETTSLPVVVISNVSQLPSGWASILWYNMLVAEPRNLSFFLTPPCARWAQLSEVLSWQFSSVTKRGLNVDQLNMLGEKLLGPNASPDGLIPWTRFCKENINDKNFPFWLWIESILELIKKHLLPLWNDGCIMGFISKERERALLKDQQPGTFLLRFSESSREGAITFTWVERSQNGGEPDFHAVEPYTKKELSAVTFPDIIRNYKVMAAENIPENPLKYLYPNIDKDHAFGKYYSRPKEAPEPMELDGPKGTGYIKTELISVSEVHPSRLQTTDNLLPMSPEEFDEVSRIVGSVEFDSMMNTV

Predictions

Predictions:

Score>80(red) has high confidence and is suggested to be used for WB detection. *The prediction model is mainly based on the alignment of immunogen sequences, the results are for reference only, not as the basis of quality assurance.

Species

Results

Score

Pig

100

Horse

100

Bovine

100

Dog

100

Xenopus

100

Rabbit

100

Chicken

Sheep

Zebrafish

Model Confidence:
High(score>80) Medium(80>score>50) Low(score<50) No confidence

Research Backgrounds

P42224_STAT1_HUMAN

Function:

Signal transducer and transcription activator that mediates cellular responses to interferons (IFNs), cytokine KITLG/SCF and other cytokines and other growth factors. Following type I IFN (IFN-alpha and IFN-beta) binding to cell surface receptors, signaling via protein kinases leads to activation of Jak kinases (TYK2 and JAK1) and to tyrosine phosphorylation of STAT1 and STAT2. The phosphorylated STATs dimerize and associate with ISGF3G/IRF-9 to form a complex termed ISGF3 transcription factor, that enters the nucleus. ISGF3 binds to the IFN stimulated response element (ISRE) to activate the transcription of IFN-stimulated genes (ISG), which drive the cell in an antiviral state. In response to type II IFN (IFN-gamma), STAT1 is tyrosine- and serine-phosphorylated. It then forms a homodimer termed IFN-gamma-activated factor (GAF), migrates into the nucleus and binds to the IFN gamma activated sequence (GAS) to drive the expression of the target genes, inducing a cellular antiviral state. Becomes activated in response to KITLG/SCF and KIT signaling. May mediate cellular responses to activated FGFR1, FGFR2, FGFR3 and FGFR4.

PTMs:

Phosphorylated on tyrosine and serine residues in response to a variety of cytokines/growth hormones including IFN-alpha, IFN-gamma, PDGF and EGF. Activated KIT promotes phosphorylation on tyrosine residues and subsequent translocation to the nucleus. Upon EGF stimulation, phosphorylation on Tyr-701 (lacking in beta form) by JAK1, JAK2 or TYK2 promotes dimerization and subsequent translocation to the nucleus. Growth hormone (GH) activates STAT1 signaling only via JAK2. Tyrosine phosphorylated in response to constitutively activated FGFR1, FGFR2, FGFR3 and FGFR4. Phosphorylation on Ser-727 by several kinases including MAPK14, ERK1/2 and CAMKII on IFN-gamma stimulation, regulates STAT1 transcriptional activity. Phosphorylation on Ser-727 promotes sumoylation though increasing interaction with PIAS. Phosphorylation on Ser-727 by PRKCD induces apoptosis in response to DNA-damaging agents. Phosphorylated on tyrosine residues when PTK2/FAK1 is activated; most likely this is catalyzed by a SRC family kinase. Dephosphorylation on tyrosine residues by PTPN2 negatively regulates interferon-mediated signaling. Upon viral infection or IFN induction, phosphorylation on Ser-708 occurs much later than phosphorylation on Tyr-701 and is required for the binding of ISGF3 on the ISREs of a subset of IFN-stimulated genes IKBKE-dependent. Phosphorylation at Tyr-701 and Ser-708 are mutually exclusive, phosphorylation at Ser-708 requires previous dephosphorylation of Tyr-701.

Sumoylated with SUMO1, SUMO2 and SUMO3. Sumoylation is enhanced by IFN-gamma-induced phosphorylation on Ser-727, and by interaction with PIAS proteins. Enhances the transactivation activity.

ISGylated.

Mono-ADP-ribosylated at Glu-657 and Glu-705 by PARP14; ADP-ribosylation prevents phosphorylation at Tyr-701. However, the role of ADP-ribosylation in the prevention of phosphorylation has been called into question and the lack of phosphorylation may be due to sumoylation of Lys-703.

Monomethylated at Lys-525 by SETD2; monomethylation is necessary for phosphorylation at Tyr-701, translocation into the nucleus and activation of the antiviral defense.

Subcellular Location:

Cytoplasm. Nucleus.
Note: Translocated into the nucleus upon tyrosine phosphorylation and dimerization, in response to IFN-gamma and signaling by activated FGFR1, FGFR2, FGFR3 or FGFR4 (PubMed:15322115). Monomethylation at Lys-525 is required for phosphorylation at Tyr-701 and translocation into the nucleus (PubMed:28753426). Translocates into the nucleus in response to interferon-beta stimulation (PubMed:26479788).

Family&Domains:

Belongs to the transcription factor STAT family.

Research Fields

· Cellular Processes > Cell growth and death > Necroptosis. (View pathway)

· Environmental Information Processing > Signal transduction > Jak-STAT signaling pathway. (View pathway)

· Human Diseases > Infectious diseases: Parasitic > Leishmaniasis.

· Human Diseases > Infectious diseases: Parasitic > Toxoplasmosis.

· Human Diseases > Infectious diseases: Bacterial > Tuberculosis.

· Human Diseases > Infectious diseases: Viral > Hepatitis C.

· Human Diseases > Infectious diseases: Viral > Hepatitis B.

· Human Diseases > Infectious diseases: Viral > Measles.

· Human Diseases > Infectious diseases: Viral > Influenza A.

· Human Diseases > Infectious diseases: Viral > Human papillomavirus infection.

· Human Diseases > Infectious diseases: Viral > Herpes simplex infection.

· Human Diseases > Cancers: Overview > Pathways in cancer. (View pathway)

· Human Diseases > Cancers: Specific types > Pancreatic cancer. (View pathway)

· Human Diseases > Immune diseases > Inflammatory bowel disease (IBD).

· Organismal Systems > Immune system > Chemokine signaling pathway. (View pathway)

· Organismal Systems > Development > Osteoclast differentiation. (View pathway)

· Organismal Systems > Immune system > Toll-like receptor signaling pathway. (View pathway)

· Organismal Systems > Immune system > NOD-like receptor signaling pathway. (View pathway)

· Organismal Systems > Immune system > Th1 and Th2 cell differentiation. (View pathway)

· Organismal Systems > Immune system > Th17 cell differentiation. (View pathway)

· Organismal Systems > Endocrine system > Prolactin signaling pathway. (View pathway)

· Organismal Systems > Endocrine system > Thyroid hormone signaling pathway. (View pathway)

References

1). Calcium silicate-human serum albumin composite hydrogel decreases random pattern skin flap necrosis by attenuating vascular endothelial cell apoptosis and inflammation. Chemical Engineering Journal, 2021 [IF=13.3]

2). A Constant Filgotinib Delivery Adhesive Platform Based on Polyethylene Glycol (PEG) Hydrogel for Accelerating Wound Healing via Restoring Macrophage Mitochondrial Homeostasis. Small (Weinheim an der Bergstrasse, Germany), 2024 (PubMed: 39679768) [IF=13.0]

3). Targeting CDCP1 boost CD8+ T cells-mediated cytotoxicity in cervical cancer via the JAK/STAT signaling pathway. Journal for immunotherapy of cancer, 2024 (PubMed: 39455095) [IF=10.9]

4). Resveratrol-loaded sulfated Hericium erinaceus β-glucan-chitosan nanoparticles: Preparation, characterization and synergistic anti-inflammatory effects. Carbohydrate polymers, 2024 (PubMed: 38431417) [IF=10.7]

5). Chemical structure and anti-inflammatory activity of a branched polysaccharide isolated from Phellinus baumii. Carbohydrate Polymers, 2021 (PubMed: 34127216) [IF=10.7]

Application: WB Species: Mouse Sample: RAW 264.7 cells

Fig. 5. |Effects of SHPS-1 on lipopolysaccharide (LPS)-stimulated RAW 264.7 cells. The internal panels represent the effect of SHPS-1 and LPS on (A) cell proliferation, (B) nitric oxide concentration in cell culture medium, (C) gene expression, (D) proteins levels analyzed by western blot.

Application: IF/ICC Species: Mouse Sample: RAW 264.7 cells

6). Aligned electrospun poly(l-lactide) nanofibers facilitate wound healing by inhibiting macrophage M1 polarization via the JAK-STAT and NF-κB pathways. JOURNAL OF NANOBIOTECHNOLOGY, 2022 (PubMed: 35883095) [IF=10.2]

Application: WB Species: Mice Sample:

Fig. 3 The underlying mechanism by which aligned fibers affected macrophage polarization. A Venn diagram showing differentially expressed genes. B KEGG pathway analysis between the A20 and R20 groups. C Heatmap of differentially expressed genes among the three groups. D Heatmap of macrophage polarization-related genes between the A20 and R20 groups. E Volcano diagram of differentially expressed genes. F Western blot analysis of the NF-κB signaling pathway. G Immunofluorescence staining showing the nuclear translocation of NF-κB p65. The nucleus is stained blue, and NF-κB p65 protein is stained red. H Western blot images and semiquantitative analysis of the JAK-STAT signaling pathway (*p < 0.05, **p < 0.01, n = 3)

7). IFN-γ signaling links ventriculomegaly to choroid plexus and ependyma dysfunction following maternal immune activation. Journal of neuroinflammation, 2025 (PubMed: 40089736) [IF=9.3]

8). Tofacitinib Promotes Functional Recovery after Spinal Cord Injury by Regulating Microglial Polarization via JAK/STAT Signaling Pathway. International Journal of Biological Sciences, 2023 (PubMed: 37781508) [IF=8.2]

Application: WB Species: Rat Sample: spinal cord

Figure 8 TOF normalizes the activated STAT signaling in injured spinal cord and ex vivo microglia under inflammatory conditions. (A) Western blot analysis performed for p-STAT1, STAT1, p-STAT3 and STAT3 expression in spinal cord obtained on day 7 post-injury. (B) Western blot analysis of p-STAT1, STAT1, p-STAT3 and STAT3 expression in primary microglia. (C) Quantification of the ratio of p-STAT1/ STAT1 and p-STAT3/ STAT3 (The values are presented as mean ± SD; *p

9). FAM210B activates STAT1/IRF9/IFIT3 axis by upregulating IFN-α/β expression to impede the progression of lung adenocarcinoma. Cell Death & Disease, 2025 [IF=8.1]

10). FAM210B activates STAT1/IRF9/IFIT3 axis by upregulating IFN-α/β expression to impede the progression of lung adenocarcinoma. Cell death & disease, 2025 (PubMed: 39900908) [IF=8.1]

Restrictive clause

Affinity Biosciences tests all products strictly. Citations are provided as a resource for additional applications that have not been validated by Affinity Biosciences. Please choose the appropriate format for each application and consult Materials and Methods sections for additional details about the use of any product in these publications.

For Research Use Only.
Not for use in diagnostic or therapeutic procedures. Not for resale. Not for distribution without written consent. Affinity Biosciences will not be held responsible for patent infringement or other violations that may occur with the use of our products. Affinity Biosciences, Affinity Biosciences Logo and all other trademarks are the property of Affinity Biosciences LTD.

Phospho-STAT1 (Tyr701) Antibody - #AF3300