How to calculate the crystallinity of cellulose film?

27 February 2021 2,753 4 View

How does GROMACS calculate the average structure of proteins?

I want to get a average structure from a pdb file containing multiple models. I used the command below: gmx cluster -f input.pdb -s topol.tpr -cutoff 20 -method gromos -av GROMACS...

25 February 2021 6,314 1 View

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The regenerated cellulose film was prepared by zinc chloride/H2O system. The zinc chloride had been washed away in the regeneration process, and the wet film which was not dried had uniform...

18 February 2021 9,538 1 View

R/Python package for time-intensity or progressive profiling in sensory evaluation?

Hi I've been looking for a stat package for my sensory evaluation data (progressive profiled which is a multi-timepoint version of descriptive analysis). Is there any available one to...

08 February 2021 9,170 3 View

How can I make sure the simulation results of the water droplet impacting on the wall using the FLUENT agree with the experimental results?

Dear researchers, I am modeling the process of the water droplet impacting on the wall with a constant contact angle. The specific calculation parameters are as follows: The droplet diameter is...

24 January 2021 1,020 5 View

Mysterious line across SDS gel?

Does anyone have the similar issue? A line across the denature SDS gel shows up after staining with Coomassie blue and there are many lines in every lane if you take a closer look. This gel had 15...

07 January 2021 5,610 4 View

How can I calculate packing density of particles by fomulas or softwares?

I have all data of particles, such as size distribution, or numbers. Is there any way that I can calculate the packing density of these particles? Assume that all particles are circular.

05 January 2021 4,272 2 View

After cellulose is regenerated in water, a cellulose hydrogel is formed. I want to know if there is crystallinity inside the the hydrogel?

After cellulose is dissolved and regenerated in water, a regenerated cellulose hydrogel is formed. I want to know if there is crystallinity inside the hydrogel, or it will not crystallize until it...

04 January 2021 7,466 4 View

How can I fix the density of system in coarsed grain simulation?

In the process of obtaining the nonbond potential of the Coarse-grained(CG) model, I need to simulate the CG model mapped from the conformation of all atom(AA). AA simulation process is...

02 January 2021 3,643 1 View

How to export Mass and Stiffness matrices using Ansys Workbench?

Hello, I am trying to export Mass and Stiffness matrices using Ansys Workbench via Modal analysis modular, with APDL commands inserted. However, there is no .matrix file generated. Could anyone...

17 December 2020 1,196 5 View

Runs of nucleotides in Sanger sequencing?

I performed site directed mutagenesis, transformation, and then I sent out plasmids for Sanger sequencing and found out that there is extension of DNA just before the stop codon. I am not sure...

27 February 2021 547 3 View

I can detect my protein but the encoding DNA sequence has stop codons within. Should I ignore the stop codons?

I constructed a synthetic DNA library (scFv, VH-VL orientation) with a 3' reporter and 8x histag. I cloned and expressed this gene following which I performed an ELISA. The ELISA results suggested...

19 February 2021 7,006 5 View

Should I add a promoter upstream of my CRISPR-inserted gene?

Hello, I want to insert a gene into my cells using sgRNA, Cas9, and an HDR template. The gene that I will insert into has its own promoter. Because I will cut the gene downstream of its start...

14 January 2021 1,170 2 View

Does anybody have experience in expressing and incorporating two proteins (to express as a protein complex) in one cloning site?

I want to clone have two proteins cloned into pPROexHtb+ (which has one cloning site). I want to express them as a protein complex. My question is would you generally put a stop codon after first...

09 January 2021 8,811 2 View

Should i add ATG in the beginning of my polypetide sequence when i want to insert it in a phagemid?

Hi I want to make a recombinant m13 phage displaying my peptide as a fusion peptide on its surface pVIII. Should i add ATG at the beginning when i want to insert it in phagmid vector? Previously,...

18 December 2020 9,931 2 View

Do I need to add a start codon and stop codon for the sgRNA expression in crispr?

Dear All, I am now designing the sgRNA for knocking out the gene through crispr. Base on my learning experience, a start codon and a stop codon should be put in the N terminus and the C terminus...

16 December 2020 5,795 3 View

Can I modify beginning of pelB/ompA tag as described?

Hello all, I am currently trying to modify my plasmids so that it has a sequence coding the pelB or ompA tag in front of the proteins. The problem is that in order to paste such a sequence into...

25 November 2020 8,386 3 View

What is the possible biological explanation of the mutational pressure as a driving force on the evolution of particular species ?

In one analysis major role of mutation pressure was observed in codon usage bias of some species

19 October 2020 4,755 1 View

Submission of dna sequences to NCBI?

When i submit dna sequences to NCBI, they ask for clarification saying "Some or all of the protein coding sequences contain internal stop codons, reading frame shifts (insertions/deletions...

03 July 2020 6,101 1 View

How to edit internal stop codon in dna sequences?

When I try to submit DNA sequences to NCBI, they ask clarification of sequences having internal stop codon. How to edit/ remove them.

03 July 2020 6,588 2 View