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- KD/KO Validated
STAT1 Monoclonal antibody
STAT1 Monoclonal Antibody for IF, IHC, WB, ELISA
Cat no : 66545-1-Ig
Validation Data Gallery
|Positive WB detected in
|LNCaP cells, HEK-293 cells, NIH/3T3 cells, HeLa cells, MCF-7 cells, Jurkat cells, HSC-T6 cells
|Positive IHC detected in
|human ovary tumor tissue, human tonsillitis tissue
Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0
|Positive IF detected in
|IFN alpha treated HeLa cells, HEK-293 cells
|Western Blot (WB)
|WB : 1:5000-1:50000
|IHC : 1:200-1:800
|IF : 1:200-1:800
|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
66545-1-Ig targets STAT1 in WB, IP, IHC, IF, CoIP, ELISA applications and shows reactivity with Human, rat, mouse samples.
|Human, rat, mouse
|human, mouse, pig
|Host / Isotype
|Mouse / IgG2a
|STAT1 fusion protein Ag0199
|signal transducer and activator of transcription 1, 91kDa
|Calculated molecular weight
|Observed molecular weight
|GenBank accession number
|Gene ID (NCBI)
|Protein A purification
|PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
|Store at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. 20ul sizes contain 0.1% BSA.
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.
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Statins attenuate antiviral IFN-β and ISG expression via inhibition of IRF3 and JAK/STAT signaling in poly(I:C)-treated hyperlipidemic mice and macrophages.
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Panax notoginseng saponins prevent colitis-associated colorectal cancer via inhibition IDO1 mediated immune regulation.