During protein assays, we use TCA to stop the reaction. Why do we use TCA ? Is there any alternative and suitable substance?
Actually, i would like to predict the transmembrane region in several membrane proteins. I have tried several online software's including TMpred, MEMSAT, PROTTER, HMMTOP, TMHMM and DAS. I have got...
04 May 2017 6,354 5 View
Im working on yeast secretary protein, my protein was his tagged so i use Anti-his monoclonal antibody for WB, i can see the signal but i got two band on each protein (totally i have two proteins...
11 December 2015 5,466 12 View
I would like to transform my episomal plasmid to Bacillus subtilis, i have many transformation protocol but im confused about which one to choose, if anyone already succeed to use any optimized...
11 December 2015 3,206 1 View
For determining the protein molecular weight, normally SDS-PAGE was used but some researchers also use zymography. im confused with both things. please clarify the difference between these two...
05 June 2014 8,610 6 View
Why should we use MgCl2 in particular instead of other chemicals for PCR?
02 March 2014 3,317 7 View
We isolated bacteria from various samples. It is identified by biochemical tests as Lactobacillus spp. Now we are going to sequencing it for species level identification. I'm a little confused...
02 March 2014 6,224 6 View
I need to identify the gene responsible for production of bacteriocin, and cloned it into another organism but I don't know how to identify the gene from 16S rRNA sequence.
01 February 2014 2,269 2 View
In milk numerous organisms grow well, that's why we pasteurize milk to remove unwanted microbes and their spores. But what is the exact target organism for pasteurization?
01 February 2014 1,168 10 View
We extracted secondary metabolite from wild Streptomyces spp. Initially, while running HPLC, peaks was obtained. However, after a few months, the peak disappeared (R.T 5.9-6.4 mins). Any suggestions?
31 December 2013 1,003 20 View
I want to know the method which is applied for isolating chemical compounds from plant materials.
31 December 2013 8,693 9 View
I am currently working on LncRNA; to know the lncRNA-protein interactions I want to do RNA pull down assay, so I need to design primers with T7 promoter. I need assistance in this regard.
07 August 2024 6,622 1 View
Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.
07 August 2024 8,782 3 View
Hi all! My thesis groupmates and I are working on purifying an E. coli bacteriophage. The phage was handed down to us by the previous thesis group, but they only managed to purify it to about...
06 August 2024 5,801 4 View
Palmitic acid presence in aqueous fraction
05 August 2024 8,624 4 View
I used humic acid at 0.044 g/kg soil in my pot experiment. But finally, I have to recommend kg/ha. Each pot's soil weight was 11 kg. What is the solution?
02 August 2024 7,186 6 View
I am currently working on a project involving liposomes and need to determine the maximum volume of siRNA that can be added to a 2.5 mL liposome solution with a total lipid concentration of 10...
30 July 2024 6,420 1 View
I would like to know the role of the TFA (trifluoroacetic acid) used on reverse phase chromatography c-18 column. It's is often used with a concentration of 0.1% on the mobile phase.
23 July 2024 8,075 3 View
Hello, colleagues! There is commenting open for new upcoming edition of USP 1033. Validation target acceptance criteria is now different from what it used to be and it doesn't include Cpm....
23 July 2024 7,292 3 View
As mentioned in literature the addition of CaCO3 to MRS Agar media is considered as an indicator for lactic acid producing bacteria, so I wonder if we can add CaCO3 calcium carbonate to any other...
20 July 2024 7,504 0 View
I synthesised a nanocarrier by conjugation MOF (MIL-100) with folic acid for use in chemotherapy but the samples didn't dissolve completely in aqueous solution or DMSO. Instead, they only...
19 July 2024 8,522 0 View