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I'm working on Psc and Su(z)2, which are the Drosophila homologues of Bmi-1. I would be interested in knowing whether any of your Bmi1 antibodies (ab25791, ab38295, and ab14389) cross react with either of the Drosophila homologues. Would it be possible for me to test a 1:1,000 dilution of each of the antibodies on WBs for cross- reactivity? Alternatively, I could send you a blot to test for yourself. I'm happy to buy any ab's that cross-react, but I can't justify spending $300/ab without knowing whether any of them will cross-react...
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ANSWER: |
Thank you for your enquiry. I performed a homology search of the immunogen of ab25791 and ab14399 and of the whole human protein with the drosophila protein and unfortunately found that it is so low that it is not detected by a BLAST search. I therefore do not think those antibodies will detect the Drosophila protein and recommend to purchase Drosophila specific antibodies. I'm sorry we currently do not have those in our catalogue and wish you all the best in your research, |
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Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"
Anti-Bmi1 antibody (ab25791) at 1/1000 dilution + U2OS whole cell lysate at 20 µg
Secondary
Rabbit anti-Goat IgG [H&L] at 1/20000 dilution
Predicted band size : 37 kDa
Observed band size : 37 kDa
The membrane was blocked in PBS containing 5% nonfat dry milk then probed overnight at 4°C with ab25791.
ICC/IF image of ab25791 stained HepG2 cells. The cells were 100% methanol fixed (5 min) and then incubated in 1%BSA / 10% normal donkey 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 (ab25791, 5µg/ml) overnight at +4ºC. The secondary antibody (green) was Alexa Fluor® 488 donkey anti-goat 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.
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