CoraLite® Plus 647-conjugated STAT1 Polyclonal antibody

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• KD/KO Validated

STAT1 Polyclonal Antibody for FC (Intra)

Host / Isotype

Rabbit / IgG

Reactivity

human, rat

Applications

FC (Intra)

Conjugate

CoraLite® Plus 647 Fluorescent Dye

Cat no : CL647-10144

Synonyms

DKFZp686B04100, ISGF 3, STAT1, STAT91

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Validation Data Gallery

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  FC experiment of HepG2 using CL647-10144

  1X10^6 HepG2 cells were intracellularly stained with 0.2 ug CoraLite® Plus 647 Anti-Human STAT1 (CL647-10144) (red), or 0.2 ug isotype control (blue). Cells were fixed and permeabilized with Transcription Factor Staining Buffer Kit (PF00011).

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Tested Applications

• Positive FC detected in: HepG2 cells

Recommended dilution

• Flow Cytometry (FC): FC : 0.20 ug per 10^6 cells in a 100 µl suspension

It is recommended that this reagent should be titrated in each testing system to obtain optimal results.

Sample-dependent, Check data in validation data gallery.

Product Information

CL647-10144 targets STAT1 in FC (Intra) applications and shows reactivity with human, rat samples.

• Tested Reactivity: human, rat
• Host / Isotype: Rabbit / IgG
• Class: Polyclonal
• Type: Antibody
• Immunogen: STAT1 fusion protein Ag0199
• Full Name: signal transducer and activator of transcription 1, 91kDa
• Calculated Molecular Weight: 83 kDa
• Observed Molecular Weight: 84 kDa
• GenBank Accession Number: BC002704
• Gene Symbol: STAT1
• Gene ID (NCBI): 6772
• Conjugate: CoraLite® Plus 647 Fluorescent Dye
• Excitation/Emission Maxima Wavelengths: 654 nm / 674 nm
• Form: Liquid
• Purification Method: Antigen affinity purification
• Storage Buffer: PBS with 50% Glycerol, 0.05% Proclin300, 0.5% BSA, pH 7.3.
• Storage Conditions: Store at -20°C. Avoid exposure to light. Stable for one year after shipment. Aliquoting is unnecessary for -20^oC storage. 20ul sizes contain 0.1% BSA.

Background Information

What is the molecular weight of STAT1? Are there any isoforms of STAT1? Is STAT1 post-translationally modified?

The molecular weight of STAT1 is 91 kDa for full-length STAT1α and 84 kDa for STAT1β, which is devoid of the C-terminal activation domain (PMID: 1502203). Phosphorylation of STAT1 regulates STAT1 activity. Phosphorylation of Tyr701 by Janus kinases (JAKs) triggers STAT1 homo- and hetero-dimerization with other STAT family members and also causes nuclear translocation, while phosphorylation of Ser727 is needed for full activation (PMID: 10851062). STAT1β lacks Ser727 and has therefore been considered to be inactive or acting in a dominant negative manner to STAT1α, although it has been further shown to be capable of transcription activation in vivo (PMID: 24710278).

 What is the subcellular localization of STAT1?

STAT1 is present in the cytoplasm and in the nucleus. Translocation of STAT1 from the cytoplasm to the nucleus is required for its regulation of gene expression and is dependent on phosphorylation (see above). However, low levels of unphosphorylated STAT1, often referred to as U-STAT1, can also be found in the nucleus, where U-STAT1 regulates the stability of heterochromatin by binding to chromatin in monomeric or dimeric states (PMID: 18840523).

 What is the tissue expression pattern of STAT1?

STAT1 is ubiquitously expressed.