Human Phospho-STAT3 (S727) Antibody

Catalog # Availability Size / Price Qty
Detection of Human Phospho-STAT3 (S727) by Western Blot.
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Product Details
Citations (1)
Supplemental Products

Human Phospho-STAT3 (S727) Antibody Summary

Species Reactivity
Detects human STAT3 when phosphorylated at S727 in Western blots.
Polyclonal Rabbit IgG
Antigen Affinity-purified
Phosphopeptide containing human STAT3 S727 site
Accession # P40763
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


Recommended Concentration
Western Blot
1 µg/mL
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot Detection of Human Phospho-STAT3 (S727) antibody by Western Blot. View Larger

Detection of Human Phospho-STAT3 (S727) by Western Blot. Western blot shows lysates of HepG2 human hepatocellular carcinoma cell line untreated (-) or treated (+) with 100 ng/mL Recombinant Human IL-6 (Catalog # 206-IL) for 15 minutes. PVDF membrane was probed with 1 µg/mL Rabbit Anti-Human Phospho-STAT3 (S727) Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4934) followed by HRP-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # HAF008). A specific band for Phospho-STAT3 (S727) was detected at approximately 110 kDa (as indicated). For additional reference, duplicate lysates were probed with 1.0 µg/mL Human STAT3 Monoclonal Antibody (lower panel, Catalog # MAB1799). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Reconstitution Calculator

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Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: STAT3

PI16 (Peptidase Inhibitor 16) is a variable molecular weight (MW) member of the CRISP family of proteins. It is expressed by cardiomyocytes and serves as an autocrine negative growth regulator. Mature mouse PI16 is a type I transmembrane protein 469 amino acids (aa) in length. The extracellular region includes all but the C‑terminal 21 amino acids. A soluble form of PI16 is known. Although its predicted MW is 50 kDa, it runs anomalously at 70 kDa (unmodified) in SDS‑PAGE. With glycosylation, it appears to be 100‑110 kDa in size. Three potential variants exist. One shows a deletion of aa 51‑124, a second shows a 9 aa extension at the N‑terminus, and a third shows a deletion of aa 191‑452. Over aa 1‑464, mouse PI16 shares 86% and 61% aa identity with rat and human PI16, respectively.

Long Name
Signal Transducer and Activator of Transcription 3
Entrez Gene IDs
6774 (Human); 20848 (Mouse); 25125 (Rat)
Alternate Names
Acute-phase response factor; APRFMGC16063; DNA-binding protein APRF; FLJ20882; HIES; signal transducer and activator of transcription 3 (acute-phase responsefactor); signal transducer and activator of transcription 3; STAT3

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Citation for Human Phospho-STAT3 (S727) Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

1 Citation: Showing 1 - 1

  1. An Activating STAT3 Mutation Causes Neonatal Diabetes through Premature Induction of Pancreatic Differentiation
    Authors: J Saarimäki-, D Balboa, MA Russell, J Saarikettu, M Kinnunen, S Keskitalo, A Malhi, C Valensisi, C Andrus, S Eurola, H Grym, J Ustinov, K Wartiovaar, RD Hawkins, O Silvennoin, M Varjosalo, NG Morgan, T Otonkoski
    Cell Rep, 2017;19(2):281-294.
    Species: Human
    Sample Types:
    Applications: Western Blot


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