Ponceau staining - what, why, & how with some practical tips

[@caucasianeagle5320]

Hi, Just did a western blot today and with my collegue we didn't know what to do after staining with ponceau. Washed couple times with water and worried if we lost some proteins but as soon as we put it into tbst it got clear. I wish I could have watch this video before. I would like to thank you. You're my hero. I don't know how many methods and tricks I learned from you. If I know why I am doing something most of the time because of you.

[@thebumblingbiochemist]

I'm soooo happy to hear you find my content helpful. Best of luck with your research!

[@sunnyx3511]

Really helpful for my practical exams ❤️

[@NewWesternFront]

I only do a few rinses with dH2O on the Ponceau, leaving the membrane stained. To the effect that the blocking solution has a pink tint everytime i've poured it off. Seems to have worked fine so far. What do you think?

[@thebumblingbiochemist]

Could probably potentially obstruct binding a bit but not a huge deal

[@TALKyLIKEENGLISH]

Very helpful. I wanted to ask why i had unspecific bindings of antibodies to many proteins at one even though i did blocking fir an hour. What can be then the probklem?

[@thebumblingbiochemist]

you might not be washing enough

[@Aash0999]

Thank you for this informative and helpful video! Could you please share your tips for separating large proteins? What are your recommendations in terms of time, voltage ..etc, for the running and transfer steps? I've been struggling with separating a large protein (>200kDa). Thank you always

[@thebumblingbiochemist]

Glad you found it helpful! I don't have experience with large proteins like that but if you do some Googling you can probably find some tips. Sorry I can't help more!

[@annaphilippova1604]

Thanks a lot for the video! Is it possible to use Ponceau staining for total protein normalization?

[@thebumblingbiochemist]

Yes you can!

[@chelodiaz7288]

hey, have been watching your videos for a long time, and i am having trouble with a western blot, i charged a pre stained protein ladder, (which is visibly transfered) but when i do the western blot i can't see the proteins after the reveal, it's weird because i can see the proteins on the gel after the transference if i apply coomasie blue. Any tips? Thanks a lot and your videos , they are very helpful.

[@thebumblingbiochemist]

Hi. Are you saying your ladder is transferred but not the rest of your protein? So the ladder doesn't show in your gel but the proteins do? All sizes? Did you try an unstained ladder as well? Did you do any sort of fixation that could have affected things?

[@TALKyLIKEENGLISH]

Cool❤

[@Howling-wolf.]

thanks