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8217
PhosphoPlus® Stat1 (Tyr701) Antibody Duet

PhosphoPlus® Stat1 (Tyr701) Antibody Duet #8217

Western Blotting Image 1

Western blot analysis of extracts from HeLa and COS cells, using Stat1 (42H3) Rabbit mAb (Human Specific).

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Western Blotting Image 2

Western blot analysis of extracts from HeLa, A20, and PC-12 cells, untreated or treated with Human Interferon-α1 (hIFN-α1) #8927 (10 ng/ml, 30 min), using Phospho-Stat1 (Tyr701) (D4A7) Rabbit mAb (upper) or Stat1 Antibody #9172 (lower).

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Chromatin IP-seq Image 3

Chromatin immunoprecipitations were performed with cross-linked chromatin from HT-1080 cells treated with IFN-γ (50 ng/ml) for 30 minutes and Phospho-Stat1 (Tyr701) (D4A7) Rabbit mAb, using SimpleChIP® Enzymatic Chromatin IP Kit (Magnetic Beads) #9003. DNA Libraries were prepared from 5 ng enriched ChIP DNA using NEBNext® Ultra™ II DNA Library Prep Kit for Illumina®, and sequenced on the Illumina NextSeq. The figure shows binding across IRF-1, a known target gene of Phospho-Stat1 (see additional figure containing ChIP-qPCR data). For additional ChIP-seq tracks, please download the product data sheet.

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IHC-P (paraffin) Image 4

Immunohistochemical analysis of paraffin-embedded human MALToma, showing cytoplasmic and nuclear staining, using Stat1 (42H3) Rabbit mAb (Human Specific).

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Flow Cytometry Image 5

Flow cytometric analysis of Jurkat cells, untreated (blue) or treated with hIFN-α1 #8927 (green), using Phospho-Stat1 (Tyr701) (D4A7) Rabbit mAb.

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Chromatin IP Image 6

Chromatin immunoprecipitations were performed with cross-linked chromatin from HT-1080 cells treated with IFN-γ (50 ng/ml) for 30 minutes and either Phospho-Stat1 (Tyr701) (D4A7) Rabbit mAb or Normal Rabbit IgG #2729 using SimpleChIP® Enzymatic Chromatin IP Kit (Magnetic Beads) #9003. The enriched DNA was quantified by real-time PCR using human IRF-1 promoter primers, SimpleChIP® Human TAP1 Promoter Primers #5148, and SimpleChIP® Human α Satellite Repeat Primers #4486. The amount of immunoprecipitated DNA in each sample is represented as signal relative to the total amount of input chromatin, which is equivalent to one.

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IHC-P (paraffin) Image 7

Immunohistochemical analysis of paraffin-embedded human Non-Hodgkin's lymphoma, using Stat1 (42H3) Rabbit mAb (Human Specific).

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IF-IC Image 8

Confocal immunofluorescent analysis of HeLa cells, untreated (left) or treated with hIFN-α1 #8927 (100 ng/mL, 30 min; right), using Phospho-Stat1 (Tyr701) (D4A7) Rabbit mAb (green) and β-Tubulin (9F3) Rabbit mAb (Alexa Fluor® 555 Conjugate) #2116 (red).

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IHC-P (paraffin) Image 9

Immunohistochemical analysis of paraffin-embedded human colon carcinoma, using Stat1 (42H3) Rabbit mAb (Human Specific) in the presence of control peptide (left) or Stat1 blocking peptide (9175 specific) #1079 (right).

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Product Includes Quantity Applications Reactivity MW(kDa) Isotype
Stat1 (42H3) Rabbit mAb 9175 100 µl
  • WB
  • IHC
H Mk 84, 91 Rabbit IgG
Phospho-Stat1 (Tyr701) (D4A7) Rabbit mAb 7649 100 µl
  • WB
  • IP
  • IF
  • F
  • ChIP
H M R 84, 91 Rabbit IgG

PhosphoPlus® Duets from Cell Signaling Technology (CST) provide a means to assess protein activation status. Each Duet contains an activation-state and total protein antibody to your target of interest. These antibodies have been selected from CST's product offering based upon superior performance in specified applications.

The Stat1 transcription factor is activated in response to a large number of ligands (1) and is essential for responsiveness to IFN-α and IFN-γ (2,3). Phosphorylation of Stat1 at Tyr701 induces Stat1 dimerization, nuclear translocation, and DNA binding (4). Stat1 protein exists as a pair of isoforms, Stat1α (91 kDa) and the splice variant Stat1β (84 kDa). In most cells, both isoforms are activated by IFN-α, but only Stat1α is activated by IFN-γ. The inappropriate activation of Stat1 occurs in many tumors (5). In addition to tyrosine phosphorylation, Stat1 is also phosphorylated at Ser727 through a p38 mitogen-activated protein kinase (MAPK)-dependent pathway in response to IFN-α and other cellular stresses (6). Serine phosphorylation may be required for the maximal induction of Stat1-mediated gene activation.

  1. Heim, M.H. (2001) J Recept Signal Transduct Res 19, 75-120.
  2. Durbin, J.E. et al. (1996) Cell 84, 443-50.
  3. Meraz, M.A. et al. (1996) Cell 84, 431-42.
  4. Ihle, J.N. et al. (1994) Trends Biochem Sci 19, 222-7.
  5. Frank, D.A. (1999) Mol Med 5, 432-56.
  6. Wen, Z. et al. (1995) Cell 82, 241-50.
Entrez-Gene Id
6772
Swiss-Prot Acc.
P42224
For Research Use Only. Not For Use In Diagnostic Procedures.

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
PhosphoPlus is a trademark of Cell Signaling Technology, Inc.
U.S. Patent No. 7,429,487, foreign equivalents, and child patents deriving therefrom.

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To Purchase # 8217S

Product Number Size Price
8217S 1 Kit (10 western blots) $489.00.0
Quantity Subtotal
$0.00