Anti-CTCF Antibody

• Catalog Number: orb308788
• Category: Antibodies
• Description: Anti-CTCF Antibody. Tested in IF, IHC, ICC, WB applications. This antibody reacts with Human, Mouse, Rat.
• Clonality: Polyclonal
• Species/Host: Rabbit
• Isotype: Rabbit IgG
• Conjugation: Unconjugated
• Reactivity: Human, Mouse, Rat
• Form/Appearance: Lyophilized
• Concentration: Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.
• Immunogen: E.coli-derived human CTCF recombinant protein (Position: K521-R727). Human CTCF shares 94% and 93.1% amino acid (aa) sequence identity with mouse and rat CTCF, respectively.
• UniProt ID: P49711
• MW: 150 kDa
• Tested applications: FC, ICC, IF, WB
• Application notes: Western blot, 0.1-0.5μg/ml, Human, Mouse, Rat Immunocytochemistry/Immunofluorescence, 5 μg/ml, Human Flow Cytometry(Fixed), 1-3 μg/1x106 cells, Human. Add 0.2ml of distilled water will yield a concentration of 500ug/ml
• Antibody Type: Primary Antibody
• Storage: Maintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
• Alternative names: Transcriptional repressor CTCF; 11-zinc finger pro
• Note: For research use only

Flow Cytometry analysis of MCF-7 cells using anti-CTCF antibody. Overlay histogram showing MCF-7 cells (Blue line). To facilitate intracellular staining, cells were fixed with 4% paraformaldehyde and permeabilized with permeabilization buffer. The cells were blocked with 10% normal goat serum. And then incubated with rabbit anti-CTCF Antibody (1 µg/1x10^6 cells) for 30 min at 20°C. DyLight®488 conjugated goat anti-rabbit IgG (5-10 µg/1x10^6 cells) was used as secondary antibody for 30 minutes at 20°C. Isotype control antibody (Green line) was rabbit IgG (1 µg/1x10^6) used under the same conditions. Unlabelled sample without incubation with primary antibody and secondary antibody (Red line) was used as a blank control.

IF analysis of CTCF using anti-CTCF antibody and anti-Tubulin Alpha antibody. CTCF was detected in immunocytochemical section of U2OS cell. Enzyme antigen retrieval was performed using IHC enzyme antigen retrieval reagent for 15 mins. The cells were blocked with 10% goat serum. And then incubated with 5 µg/mL rabbit anti-CTCF Antibody and mouse anti-Tubulin Alpha antibody overnight at 4°C. DyLight®488 Conjugated Goat Anti-Rabbit IgG and Cy3 Conjugated Goat Anti-Mouse IgG were used as secondary antibody at 1:500 dilution and incubated for 30 minutes at 37°C. Visualize using a fluorescence microscope and filter sets appropriate for the label used.

Western blot analysis of CTCF using anti-CTCF antibody. Electrophoresis was performed on a 8% SDS-PAGE gel at 80V (Stacking gel) / 120V (Resolving gel) for 2 hours. The sample well of each lane was loaded with 30 ug of sample under reducing conditions. Lane 1: human MCF-7 whole cell lysates, Lane 2: human SiHa whole cell lysates, Lane 3: human HepG2 whole cell lysates, Lane 4: rat brain tissue lysates, Lane 5: mouse brain tissue lysates. After electrophoresis, proteins were transferred to a nitrocellulose membrane at 150 mA for 50-90 minutes. Blocked the membrane with 5% non-fat milk/TBS for 1.5 hour at RT. The membrane was incubated with rabbit anti-CTCF antigen affinity purified polyclonal antibody at 0.5 µg/mL overnight at 4°C, then washed with TBS-0.1% Tween 3 times with 5 minutes each and probed with a goat anti-rabbit IgG-HRP secondary antibody at a dilution of 1:5000 for 1.5 hour at RT. The signal is developed using an ECL Plus Western Blotting Substrate with Tanon 5200 system. A specific band was detected for CTCF at approximately 150 kDa. The expected band size for CTCF is at 83 kDa.