Rabbit Anti-SP1 (Transcription Factor Sp1, TSFP1)
Specificity protein 1 (SP1) is a ubiquitously expressed transcription factor belonging to the family of C2H2-type zinc finger containing DNA-binding proteins. SP1 binds GC-rich motifs with high affinity and regulates the expression of numerous mammalian genes (1,2). It interacts with many other transcription factors, such as c-Myc, Egr1, and Stat1, and with basal transcription machinery components. SP1 interacts with chromatin-modifying factors such as histone deacetylases (HDACs) and p300 in chromatin remodeling. Transcriptional activity and stability of SP1 are regulated by post-translational modification, including phosphorylation, acetylation, ubiquitylation, and glycosylation (3). Glycosylation of SP1 following insulin treatment leads to increased nuclear localization, while glucagon treatment increases cytoplasmic SP1 levels (4-6). Investigators have found high levels of SP1 in patients with Alzheimer’s disease (7).
Applications: Suitable for use in Western Blot, Immunoprecipitation, Immunohistochemistry, Immunofluorescence, ChIP, Flow Cytometry. Other applications not tested.
Recommended Dilution
Western Blot: 1:1000, incubate membrane with diluted antibody in 5% nonfat dry milk, 1X TBS, 0.1% Tween-20 at 4°C with gentle shaking, overnight. Immunoprecipitation: 1:50 Immunohistochemistry (Paraffin): 1:2000 ChIP: 1:100 Flow Cytometry: 1:100 Optimal dilutions to be determined by the researcher.
Storage and Stability
May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
Immunogen
Synthetic peptide corresponding to residues surrounding Pro593 of human SP1.
Form
Supplied as a liquid in 10mM sodium HEPES, pH 7.5, 150mM sodium chloride, 0.1mg/ml BSA, <0.02% sodium azide, 50% glycerol.
Specificity
Recognizes endogenous levels of total human SP1. It is predicted to detect all three known isoforms. Species Crossreactivity: monkey.
