EMSA troubleshooting. Protein-DNA complex not migrating, cold probe lane with multiple bands. Can anyone help?

I'm running an EMSA to show the DNA binding activity of recombinant proteins versus the Wild type. Previous assays run by my research group using a different test system show the protein-DNA...

24 February 2021 8,325 1 View

Why is my qPCR suddently not working?

I've been working with qPCR for some months now. I amplify 2 genes (PSEN2 and HN1), and the protocols are optimized for both and have been working fine. The other day I amplified HN1 for some...

21 February 2021 3,437 3 View

Can ethanol be used as an analgesic?

If ethanol has analgesic properties, why isn't it used for clinical purposes?

18 February 2021 8,227 4 View

Acid phenol:chloroform (25:24:1) for RNA extraction instead of (125:24:1)?

Hi everyone! I am about to extract RNA for RNA sequencing assays and my Invitrogen kit/protocol...

14 February 2021 1,755 3 View

Do you know a good FGFR4 antibody for PDX IHC?

Dear all, I've tried many FGFR4 antibodies I saw in the literature but some of them are not useful for IHC and some are only useful for patients slides not for PDX. Do you know a FGFR4 antibody...

14 February 2021 900 0 View

How to use the bioluminescent ATP assay kit?

I need to do a mitochondrial ATP quantification assay in insects and for this, I have a bioluminescent ATP assay kit but I don't have a protocol yet. I'd like to know if you have some kind of...

24 January 2021 3,655 3 View

Are there any public datasets of consumer complaints about service industries at the European level?

06 January 2021 1,718 2 View

Sophie Germain Prize?

26 December 2020 9,273 6 View

How do you transmit and evaluate ethics and moral values in you teaching activity?

Ethics and moral values have always being an essential part of teaching and scientific research. How do you teach and evaluate these essential subjects in your daily interaction with students?

23 December 2020 5,058 7 View

Can I use the images of Collection 1 Level 2 Landsat 5 TM / Landsat 8 OLI to perform vegetation indices right away?

I'm aware that in order to perform any vegetation index like NDVI, SAVI or OSAVI you need to do some atmospheric, radiometric and terrain corrections. I'm pretty sure that Level 2 images from...

21 December 2020 4,088 3 View

Antibody anti-IgM Bovin conjugated Biotin ?

Hi everybody, Can anyone please suggest me an antibody anti-IgM Bovin conjugated Biotin ? I would like to use it in LUMINEX with a streptavidin conjugated phycoerythrin reporter. Thanks in...

25 February 2021 9,659 2 View

What urea buffer can i use for biotagged protein extraction from streptavidin beads?

Hi all, I have been doing research on biotagged LDB1 proteins in Mel cells. I purify the proteins using M280 streptavidin beads. The yield is very low so I've been trying to optimize it by...

24 February 2021 5,749 3 View

Can part of recombinant protein not be expressed?

Hello. I am currently trying to express a recombinant gene with Avitag at the N-terminal. I'm aiming at a final product that looks like this: Avitag-(target protein) The protein I use is already...

14 February 2021 2,039 4 View

Proteins not stacking/ entering in a native PAGE. Can anyone help?

Hi. I am trying to study a biotin modification of my target protein in a crude cell extract and am interested to determine how much of my protein in getting biotinylated. After biotinylating my...

15 January 2021 2,214 4 View

How to bind streptavidin to the surface of acrylamide?

We are fabricating acrylamide beads as probe substrate. How can we make streptavidin bind to the surface of the acrylamide? Thanks!

09 December 2020 8,141 7 View

How to solve the problem with protein getting stuck in the wells during electrophoresis for EMSA?

26 November 2020 6,094 3 View

mScarlet Elisa Detection?

I've been trying to detect mScarlet protein purified from E. coli via an ELISA assay. My protein has two tags: an N-terminal Strep-tag and a C-terminal His-tag. To do the ELISA I've used...

20 September 2020 730 2 View

Best way to add streptavidin onto flat surface?

I will be adding streptavidin onto the surface of a graphene coated glass slide; thereafter, I will be analyzing with a MALDI-TOF. I was wondering the best way to go about this? I was thinking of...

07 September 2020 5,902 4 View

Negative Inhibition in Confirmatory ADA assay?

I am developing an Anti-Drug Antibody assay and keep getting a negative percent inhibition (negative control sample results are higher in confirmatory than in screening format) when running...

19 August 2020 6,658 1 View

How can I break biotin-streptavidin bond and separate them?

I am working with a florescent compound that is biotinylated. When strepdavidin is present in the system, the binding of the protein with the compound quenches the florescence. I need to perform...

16 August 2020 6,937 8 View