Protein-aptamer gel electrophoresis help, please??

Hi, I have problems with running gel electrophoresis. I have tried agarose gel electrophoresis and native PAGE. I have two proteins, which have molecular weights of ~30kDa and ~180kDa and two...

03 March 2021 4,275 4 View

Is there any tutorial for comsol general projections?

Hi, im trying to make a projection in a 3d comsol model. I have a non uniforme chanel and my intention is to get the average tempreture in the y-z cross section and se the average tempreture...

02 March 2021 4,624 4 View

How to address this issue in the analysis of Real-Time PCR results?

To dear Researchers, I was analyzing a series of concentration for estimation of Real-Time PCR efficiency. The concentration was 1:10. I used MS-excel to evaluate Slope. The result of slope was -8...

01 March 2021 8,683 4 View

Expression cloning by using cDNA,do I need to modify the cDNA first?

I am going to have a expression cloning of mammalian gene by using shuttle plasmid to transforming the E.coli However I don't know I should only inserting the Coding sequence ,or I can...

28 February 2021 5,440 3 View

How to define tie constraint between rigid body and another part in dynamic explicit model of Abaqus?

Hi dear researchers I connected a rigid body into the part of my structure by tie constraint and then I added displacement to rigid body, in static general step every thing is fine and these two...

28 February 2021 3,442 2 View

I need dataset for recommandation system?

Hi every body I need to collect datasets from different source to work on recommendation system algorithms, could you advise me how collect data?

27 February 2021 7,063 7 View

How to estimate 2SLS with different instruments for different endogenous variables?

To be specific, I want to conduct an IV regression in stata with the following three equations. EQ1: Y1 ~Y2 Y3 X EQ2: Y2 ~ Z1 EQ3: Y3 ~ Z2 Both Y2 and Y3 are endogenous. However, Z1 and Z2 are...

23 February 2021 6,266 3 View

Which microtomy technique do you suggest for thin and delicate root sectioning ?And, how to preserve and process the roots before sectioning?

We have thin roots of from 1 year old different species of plants. We are looking into anatomical details of the roots. What's the best method to preserve and process the roots once they are...

23 February 2021 1,898 1 View

How to find out the problem of VMD software when i run it?

Hello I try to install and run the VMD software on windows 10 (64-bit).It doesn`t work and it is closed when I run it. I checked all of tutorials, videos and documents. But they did not work...

22 February 2021 8,211 3 View

How to model rupture in geogrid in abaqus?

Hi researchers I wanna model tensile test on geogrid in abaqus, so I added displacement to one side of geogrid and the other side of geogrid is constrained completely, everything seems normal but...

19 February 2021 2,195 2 View

Will SARS-CoV-2 Spike be broken into S1 and S2 by denaturing conditions?

Hello, I am performing a western blot of my SARS-CoV-2 Spike-pseudotyped lentiviral particles. I denature my virus by adding concentrated virus to 2X Laemmli buffer at 1:1, then boiling for...

17 February 2021 4,844 4 View

Can I use carbo-free blocking solution in place of normal goat serum?

I'm looking to try this in place of normal goat serum for a wisteria floribunda lectin stain. In my IF protocol, 10% of the final volume of my blocking solution is goat serum. If I were to go the...

07 February 2021 7,520 6 View

SARS-CoV-2 Spike Protein Western Bands?

Hello, I am western blotting SARS-CoV-2 spike protein from lentiviral using an antibody against S1. To prepare samples, I mixed concentrated lentivirus 1:1 with 2X Laemmli buffer and boiled...

07 February 2021 3,643 4 View

Difference between assessing EC50 in presence of physiological levels of human serum albumin and alpha1 acid glycoprotein vs. % human serum?

01 February 2021 1,825 1 View

How would you assess protein binding adjusted EC50 for a drug that has a binding rate of over 95%?

I'm in need of a reference or a method to come up with a protocol that allows one to get the protein-adjusted EC50 for an antiviral drug in presence of human serum albumin and acid glycoprotein.

27 January 2021 1,402 1 View

Co-stain Lectin PNA FITC conjugate with an uncojugated primary antibody?

Hello, I am planning to stain retinal tissue sections for IHC and want to co-stain cones and rods. For this we plan on using a Lectin PNA From Arachis hypogaea (peanut), FITC Conjugate for cones...

12 January 2021 583 1 View

Most appropriate fit of a standard curve in an enzym-linked lectin assay?

Dear all, I have a question regarding the most appropriate fit of a standard curve in an enzyme-linked lectin assay set-up to quantify the amount of mucin secretion in conjunctival explant...

03 January 2021 1,010 6 View

Can i use MM-PBSA to calculate the binding energy of a glycan ligand? ad how?

I have a protein-ligand (glycan) complex and want to do an MM-PBSA analysis using AMBERTOOLS after doing MDS (NAMD). What are the files necessary I should prepare for glycan? Note: I used...

30 December 2020 2,658 2 View

How to get structure and topology for glycosaminoglycan (GAG) of arbitrary length?

Hello all, I want to do glycosaminoglycan (GAG) simulation in Gromacs. Initial structure and CHARMM topology for short chains can be obtained from Charmm GUI glycan modeler. But I have to take...

23 December 2020 6,092 2 View

I have proposal to extract HPA from snails, dos any researcher have protocol of HPA (Helix pomata aglutinin) extraction?

Lectin fro Helix pomatia agglutinin used to detect O-Linked glycosylation

21 October 2020 6,139 3 View