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Hello! I want to determine the activity of my in house Reverse Transcriptase enzyme. For this, I have used Thermo's Enzcheck Reverse Transcriptase assay kit. I used commercial Thermo RT enzyme to...

08 February 2021 7,285 1 View

How do i interpret this inconsistent mediation in my results ?

Dear all and any, I have run a mediation analysis on SPSS using the PROCESS extension (model 4). My results don't really make any intuitive sense, where my ID (availability of healthy fast foods,...

09 January 2021 7,812 2 View

How to calculate the field capacity??

28 December 2020 1,521 2 View

Which software should be used for XRD analysis in case of soils?

I am using XRD test for indentification of minerals and amount of it.

10 December 2020 8,173 4 View

How to improve total RNA concentration after transfecting the cells with the desired delivery system ?

Hello, I have been doing some transfection experiments for certain gene studies and wants to further do gene expression studies using qRT-PCR. Currently, I am using 7*10,000 cells per well for...

08 December 2020 6,981 5 View

What is the index of germination and howa calculate it??

16 November 2020 4,856 8 View

How do I determine the units of polymerase activity for my enzyme DNA Polymerase?

One unit of DNA polymerase activity is conventionally defined as the amount of enzyme that will incorporate 10 nmol of nucleotides during a 30-min incubation. I found out about the...

04 November 2020 8,824 7 View

What is the best technique to identify native bacteria groups present in soil?

I am lay in this subject. Is DNA sequencing the best way to identify the different types of soil bacteria present in soil samples? Ideally, I'd like to find a technique that allows me to identify...

29 September 2020 4,609 9 View

How to find the coordinate location of shared information in Google Drive?

Is it possible to know the coordinates of User Equipment which sent the data/information/file to another User Equipment on Google drive? Does drive has such features or option to identify the...

23 August 2020 3,315 3 View

Someone has a suggestion to improve the purification of MMLV-RT protein?

I am working with a MMLV-RT (Moloney murine leukemia virus- Transcriptase Reverse). I am expressing in E. coli pTGroE and purifying in a Chelating Sepharose loaded with Ni2+. I am eluting the...

01 June 2020 4,105 4 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 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 calculate Ligand-active site distance in a ligand-protein complex from MD simulation?

I have run a MD simulation of a ligand-protein complex in GROMACS using CHARMM forcefield. Reviewer has asked me to calculate Ligand-activesite distance and binding free energy of ligand with...

27 February 2021 4,703 1 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

What's the concentration recommend for recombinant protein use in western blotting?

I'm currently working having problem with the concentration for recombinant protein use in western blot, the one been used is Recombinant Human CD19 Fc Chimera Protein-rndsystem which does not...

24 February 2021 8,514 3 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