Transcriptional or post-translational regulation?

I have came across a paper where they observed a delay timing of a drug inhibitory effect and insulin stimulatory effect respectively on purine synthesis, and thus, they suspected that the...

09 October 2018 9,919 0 View

How to process RNA-seq results?

I have obtained the RNA-seq results, which is in an excel file with all the fpkm values. May I know how do I check the gene expression profiles? Is there any software for this or I gotta manually...

04 May 2018 3,338 9 View

How to determine a protein is working downstream of another protein?

If overexpression of protein A can rescue the growth defect caused by mutation in protein B, can I consider protein A is working downstream of protein B? If yes, why is it so?

04 May 2017 7,522 24 View

Can anyone suggest method to extract membrane proteins?

Currently I am having problems in extracting membrane proteins (ammonium transporters), can anyone help? I used LDS in extraction and I did not heat the samples. Proteins in lane 1-4 seem like...

03 April 2017 773 20 View

Best temperature to dry DNA samples after ethanol precipitation?

I am preparing samples for BigDye sequencing. After PCR, I did ethanol precipitation to clean up the samples. In order to dry up the samples (after removing 70% ethanol), is it okay for me to dry...

09 October 2016 6,100 8 View

Overexpression of a gene is toxic to the cell? Why is it so?

Currently I am working on a new protein in fission yeast. Based on the predicted function, it is involved in transcription. We found that when this gene is overexpressed, the cell growth is...

06 July 2016 8,718 1 View

If one of the proteins in S.pombe was tagged with FLAG, is this pombe still considered as wild type?

One of the proteins in S.pombe that I am working on is tagged with FLAG, so can I still call this strain as wild type as it contains a fragment of foreign DNA? If no, what is the right term for it?

05 June 2016 8,096 3 View

Can I re-digest my digested PCR product?

I have digested my PCR product with NEB Not1 and Nde1 for 1hr. I have cut the band and purified the product. However I afraid the digestion is incomplete, can I re-digest them again? Is there any...

04 May 2016 2,655 17 View

Anyone has protocol for TaKaRa PrimeSTAR mutagenesis basal kit in English?

02 March 2016 4,844 6 View

What are the characteristics of a broad host range plasmid?

May I know what are the characteristics of a BHR plasmid? Is this kind of plasmid occurs naturally or we can try to engineer a narrow host range plasmid to become one?

01 February 2016 7,160 0 View

Chlorinated organic formation in odor control scrubbers using hypochlorite?

I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The...

03 March 2021 3,661 2 View

What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

How to remove DCU and HOBT from my reaction?

I am doing a acid and a chiral amino alcohol reaction using DCC and HOBT in DCM or THF? Can anyone suggest me how to remove DCU and HOBT from a reaction mixture??

28 February 2021 2,153 1 View

What is the most common number of epitopes in an multi-epitope Vaccine?

hi everyone, I'm interested in the field of vaccine design specifically multi-epitope cancer vaccines , I want to know if there is a minimum and maximum number of epitopes we could use in a...

27 February 2021 3,882 3 View

How to increase solubility of Poly acrylic acid in Dioxane solvent?

I am working with Polyacrylic acid (100.000Da) and instead of water, I need to use another solvent (dioxane) to dissolve PAA. However, because of the high molecular weight, it's quite hard to...

25 February 2021 2,225 5 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 View

Is it efficient to do liquid biopsy to investigate the gene expressions of the tumor?

To do liquid biopsy and look for specific gene expressions there are so many published papers. Thera are different protocols and procedures used to isolate circulating cell free RNA or mRNA from...

23 February 2021 7,326 5 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

Have you ever experiencing air vent trouble in fermentation process?

Dear all, My research group is currently working with a 12-litre fermenter. Somehow, if we do the fermentation for more than 20 hours, the process will be more prone to contamination. Our current...

23 February 2021 1,908 2 View