Anti-CENPF antibody (ab5)

HeLa cells were labelled with anti-ACA and anti-CENPF (ab5). ab5 was used at a working dilution of 1/400. This image demonstrates the dramatic increase in fluorescence that occurs late in G2 cells (indicated by arrows). In the final panel DAPI is pseudo-coloured blue, while ACA and CENPF are coloured green and red respectively. 40x magnification.

ICC/IF image of ab5 stained human HeLa cells. The cells were methanol fixed (5 min) and incubated with the antibody (ab5, 1µg/ml) for 1h at room temperature. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Image-iT^TM FX Signal Enhancer was used as the primary blocking agent, 5% BSA (in TBS-T) was used for all other blocking steps. DAPI was used to stain the cell nuclei (blue). Alexa Fluor® 594 WGA was used to label plasma membranes (red).

Interpahse and Prophase HeLa cells were labelled with anti-ACA and anti-CENPF (ab5). ab5 was used at a working dilution of 1/400. This image emphasizes the redistribution of CENPF from the nuclear matrix during late G2 following entry into the initial stages of mitosis (see the accompanying image). Distinct punctate CENPF patterns proximally located in relation to the centromeres can be seen. In the final panel DAPI is pseudo-coloured blue, while ACA and CENPF are green and red respectively. 100x magnification. 

ab5 staining CENPF in Mouse embryonic fibroblast cells by ICC/IF (Immunocytochemistry/immunofluorescence). Cells were fixed with paraformaldehyde, permeabilized with 0.3% Triton X-100 and blocked with 3% BSA for 30 minutes at 23°C. Samples were incubated with primary antibody (1/300 in PBS + 0.1% Triton-X 100 + 1% BSA) for 12 hours at 4°C. An Alexa Fluor® 488-conjugated Goat anti-rabbit IgG polyclonal (1/1000) was used as the secondary antibody.

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ab5 staining (human) T98G glioma cells by flow cytometry.  Cells were trypsinized, spun down & resuspended in PBS before fixing and permeabilised in ethanol.  The primary antibody was diluted 1/400 and incubated with the cells for 2 hours at 20°C.  An Alexa Fluor® 488 conjugaetd goat anti-rabit IgG was used as the secondary antibody. 

Gating strategy: intact cells with >80% and <250% of G1 DNA content

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Paraformaldehyde-fixed, 0.2% Triton X-100 permeabilized A549 (human lung carcinoma cell line) cells stained for CENPF (red) using ab5 at 1/500 dilution in ICC/IF. ). Goat Anti-Rabbit IgG H&L (Alexa Fluor^® 555) at 1/500 dilution was used as the secondary antibody.

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