Does IDPs have higher sensitivity in NMR compared to structured proteins?

Due to high flexibility IDPs expected to have higher sensitivity in NMR compared to structured proteins. Is this hypothesis correct? If yes can you suggest a suitable reference for this?

04 May 2019 8,689 2 View

Which buffer to use for NMR study peptide - Zinc interaction?

I am studying interaction of zinc with a peptide. Which buffer should I use ? And what is the highest concentration of zinc can used ?

08 September 2018 1,344 3 View

What is the protocol for monitoring Abeta (1-40) aggregation by ThT fluorescence assay ?

I want to study aggregation kinetics of Abeta (1-40) by ThT. I would like to know the working protocol for this study. I am using plate-reader based assay.

08 September 2018 5,069 0 View

How to compare stability of a protein and its mutant with NMR spectroscopy?

How can we compare stability of two proteins with the help of NMR spectroscopy? what are the traditional NMR techniques that we use for this purpose?

11 December 2017 3,626 4 View

What are the properties to be considered while designing a peptide for preventing Amyloid beta aggregation ?

If I design a peptide for preventing aggregation of Abeta 42 peptide, what are aspects should I consider if I want to suggest it as drug for Alzheimer disease. What all are the properties should...

10 November 2017 3,146 2 View

How to check presence of calcium in a protein sample?

I have a calcium binding protein. To make it calcium free i did dialysis with EDTA containing buffer. But how to make sure whether a protein is calcium free ?

10 November 2016 5,484 2 View

Can any one suggest some good reviews on Calcium binding proteins (especially crystallins) ?

In search of some review article on calcium binding proteins and exploring studies that can be performed on them.

05 June 2016 7,639 1 View

What are the disadvantages of CellSeearch System for capturing CTC ?

I read about circulating tumor cells and understood that cellsearch (Janssen) is the only FDA approved method that existing for capturing cancer cells and they are based on antigen-anibody...

10 November 2015 4,501 7 View

Why is DH5alpha better than BL21 for plasmid isolation?

Why do we generally prefer cells like DH5alpha or top10 for increasing plasmid amount and isolation? Why are we using BL21 for protein expression? Why not DH5alpha?

10 November 2014 3,194 10 View

Any software for determining torsional angles from protein crystal structure???

08 September 2014 3,706 3 View

Why might my GFP tag be dissociating from my plasmid after transfection?

I have a set of stably transfected cell lines all transfected with plasmids containing GFP tags on the C terminus. During a western blot using anti-GFP antibody, one of my plasmids has dissociated...

01 March 2021 9,310 4 View

Precipitate after adding laemmli buffer to protein solution containing Potassium Acetate?

Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...

01 March 2021 2,622 3 View

What is the most suitable server for predicting protein structures in bacteria?

I have used the i-Tasser several times, however it has been unavailable for several days. I tried the swiss-model, but the output was not very pleasant due to the model used. Is there any other...

28 February 2021 4,521 3 View

Do you need the CMV enhancer before the CMV promotor for a proper function of CMV on the gene that follows?

I'm a student and I have to produce a cell line with a knockin for the NRF2 gene with GFP. I have to put a promotor in front of the GFP because the gene will be too far away from the promotor of...

28 February 2021 7,127 2 View

Are protein samples in SDS compatible with ELISA?

I have used an AllPrep DNA/RNA/Protein Mini Kit QIAGEN kit to extract RNA and protein from my samples. At the end of the protein purification, I resuspend my protein in 5% SDS. Will these samples...

28 February 2021 7,370 3 View

Any specific pipeline or parameter to analyse total transcriptomics study of brain tissue samples?

I have two groups of brain samples, control and treated for example. It was total RNA nova seq sequencing. I tried all the available pipeline like: star+rsem+deseq2, Hista+stringtie+cuffdiff,...

27 February 2021 356 6 View

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 View

Problem with ligating 2.8 kb insert into 8.5 kb plasmid?

I am trying to clone 2 copies of the same mammalian gene into the pSF-CMV-Ub-Puro Ascl (contains HindIII, KpnI and NheI cut sites) plasmid. This is what the final product is supposed to look like...

24 February 2021 6,310 3 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 I use a protein-devoid condition as my negative control in ELISA?

Hello, I am running a sandwich-type ELISA where I am trying to inhibit a protein-protein interaction using small molecules. For each experiment, I determine my Z' (Z-prime) to determine the...

23 February 2021 7,429 1 View