The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Use a concentration of 1 - 5 µg/ml.
1/500 - 1/1000. Detects a band of approximately 90 kDa (predicted molecular weight: 90 kDa).
Use at an assay dependent concentration.
Carries out a dual function: signal transduction and activation of transcription. Mediates cellular responses to the cytokine KITLG/SCF and other growth factors. Binds to the GAS element and activates PRL-induced transcription.
Involvement in disease
Growth hormone insensitivity with immunodeficiency
Belongs to the transcription factor STAT family. Contains 1 SH2 domain.
Tyrosine phosphorylated in response to signaling via activated KIT, resulting in translocation to the nucleus. Tyrosine phosphorylated in response to signaling via activated FLT3; wild-type FLT3 results in much weaker phosphorylation than constitutively activated mutant FLT3. Alternatively, can be phosphorylated by JAK2. Phosphorylation at Tyr-699 by PTK6 or HCK leads to an increase of its transcriptional activity. Dephosphorylation on tyrosine residues by PTPN2 negatively regulates prolactin signaling pathway.
Cytoplasm. Nucleus. Translocated into the nucleus in response to phosphorylation.
Signal transducer and activator of transcription 5B antibody
Transcription factor STAT5B antibody
Western blot - STAT5b (phospho S731) antibody (ab52211)
All lanes : Anti-STAT5b (phospho S731) antibody (ab52211) at 1/500 dilution
Lane 1 : Extracts from RAW264.7 cells
treated with EGF (200ng/ml, 30min) Lane 2 : Extracts from RAW264.7 cells
treated with EGF (200ng/ml, 30min), ab52211 was pre-incubated with immunising (blocking) peptide
Paraffin-embedded human breast carcinoma tissue stained for STAT5b (phospho S731), using ab52211 (1/100). The right hand panel represents a negative control where ab52211 was pre-incubated with the immunising (blocking) peptide.
ICC/IF image of ab52211 stained HeLa cells. The cells were 4% PFA fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab52211, 1µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.
Chen AY et al. Productive Parvovirus B19 Infection of Primary Human Erythroid Progenitor Cells at Hypoxia Is Regulated by STAT5A and MEK Signaling but not HIFa. PLoS Pathog7:e1002088 (2011).
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