Is there is any scope to do the research on Text classification?

I got many papers on Text classification before 2005 years. I didn't got current articles/papers. Now I want to know that "Is there is any scope to do the research on Text classification? Suggest...

06 February 2019 8,644 5 View

Differences in MALDI TOF mass from the calculate mass?

Molecular weight calculate from primary structure of my protein is 23121 but after MALDI-TOF i got 22908.90 a difference of approximately 213 dalton. Any suggestions for the observed mass difference.

22 October 2018 3,651 3 View

How to prepare the working stock if the primer concentration in 242.65pm/ul on addition of 200ul water?

18 April 2017 3,317 3 View

Why did clumps formation observed?

While preparing agarose gel, if we add Agarose powder in already boiled 1X TAE buffer, clumps (precipitation) formation observed. Agarose was not getting dissolved uniformly even after mixing and...

12 February 2017 9,492 1 View

Regarding refolding of protein ?

01 January 2017 1,400 12 View

Why plasmid after scale up not same of original?

I have cloned gene in one plasmid and sequence confirmed with Miniprep. I want to scale up same plasmid, for that I transformed my Final Miniprep plasmid into DH5 alpha cells and further used a...

19 December 2016 7,015 4 View

Ion exchange chromatography?

I have performed gel filtration (superdex 75) and anion exchange chromatography for my protein. Solvent used for gel filtration is 20mM PB + 100mM nacl (ph 6.5) and for cation exchange, solvent A...

28 August 2016 3,286 12 View

Suggestions for native gel electrophoresis ?

18 August 2016 2,175 8 View

What is reason that after transformation bacterial colonies of unequal sizes?

12 August 2016 929 5 View

Can i use Ni-NTA column itself to purify monomers from covalently cross linked dimers. ?

I have a mixture of monomer and dimer. Monomer of the protein has N terminal His tag and i did not remove the his tag after purification. I provide particular condition to my monomers so that two...

20 July 2016 5,347 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

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

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23 February 2021 4,014 3 View