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Invitrogen
Human STAT4 (aa 98-225) Control Fragment Recombinant Protein
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Product Details
RP-94780
Product Specifications
Species
Human
Expression System
E. coli
Amino acid sequence
PMHVAVVISNCLREERRILAAANMPVQGPLEKSLQSSSVSERQRNVEHKVAAIKNSVQMTEQDTKYLEDLQDEFDYRYKTIQTMDQSDKNSAMVNQEVLTLQEMLNSLDFKRKEALSKMTQIIHETDL
Tag
His-ABP-tag
Class
Recombinant
Type
Protein
Purity
>80% by SDS-PAGE and Coomassie blue staining
Conjugate
Unconjugated
Unconjugated
Unconjugated
Form
Liquid
Concentration
≥5.0 mg/mL
Purification
purified
Storage buffer
PBS/1M urea, pH 7.4
Contains
no preservative
Storage conditions
-20°C, Avoid Freeze/Thaw Cycles
Shipping conditions
Wet ice
Product Specific Information
Highest antigen sequence indentity to the following orthologs: Mouse (95%), Rat (95%).
This recombinant protein control fragment may be used for blocking experiments. In IHC/ICC and WB experiments, we recommend a 100x molar excess of the protein fragment control based on the concentration and the molecular weight. Pre-incubate the antibody-protein control fragment mixture for 30 min at room temperature.
Target Information
STAT4 was originally identified using degenerate primers complementary to sequences encoding conserved regions of other STAT proteins. The STAT4 protein is most similar to STAT1 (52%) and STAT3 (47%). Functionally, STAT4 is similar to other STAT family members in that it can be tyrosine phosphorylated by Jak1 or Jak2. STAT4 forms homodimers and heterodimers with related STAT family members. Tyrosine phosphorylated STAT4 can bind the IFN-gamma activated site (GAS). Serine phosphorylation of STAT is also required for maximal transcriptional activity. STAT4 expression is restricted to the thymus, spleen and testis. Until recently the cytokine(s) responsible for activation of STAT4 had not been identified. STAT4 is now known to be activated by the cytokine interleukin 12 (IL-12). IL-12 is required for the T-cell independent induction of IFN-gamma which is a key step in the initial suppression of bacterial and parasitic infections. In addition, IL-12 is required for the development of a Th1 response which is necessary for effective host defense against intracellular pathogens. STAT4-deficient mice display impaired IL-12 development of Th1 cells and enhanced development of Th2 cells. A recent study in mouse has shown that in response to viral infection IFN-a/b activation of STAT4 is required for IFN-g production.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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Bioinformatics
Protein Aliases: CIS4; HSPC060; OTTHUMP00000163553; SOCS4; SOCS6; SSI4; STAI4; STAT; STATI4; unnamed protein product
Gene Aliases: DPMC; SLEB11
UniProt ID: (Human) Q14765
Entrez Gene ID: (Human) 6775
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