Is it possible to separate RNA based on its size?

More Fahimeh Mohammadi's questions See All

How much RNA should i prepare from my samples for sequencing?

Hi everyone I'm going to extract RNA for sequencing. I want to send the samples to the BGI company for sequencing. How much RNA should I prepare from my samples?

03 April 2018 4,792 3 View

Is there someone who guides me to extract a high quality RNA?

Hi everyone. I have to extract RNA from a tissue. Is there someone who guides me to extract a high quality RNA ? ( Important points that must be met, Suitable kit and protocol)

10 November 2017 8,940 8 View

Can someone introduce me an paper or website for whole genome sequencing?

Hi everyone I need an article or website for how whole genome sequencing of a species (Workflow, registration, annotation, materials and methods and etc). Can someone introduce me an article or...

09 October 2017 3,137 6 View

What method can be used to obtain the genome of a bacterium from water and milk that has been contaminated with the bacteria?

I'm going to use PCR method for amplification of a gene from a bacterium. my examples are water and milk That have been infected by a bacterium.Is there a special kit for the isolation of...

04 May 2017 9,445 8 View

How Be used from Circular Dichorism in the drug recombinant proteins?

Hello everyoneI need complete information about CD description in the drug recombinant proteinsIs there anyone who can help me?

31 December 2016 764 8 View

In your opinion, What is the best Human housekeeper genes for use in Liver tissue?

hi I am testing the housekeeper genes in the liver in humans, so I use a technique such as SYBR Green. In your opinion, what is the best genes?

31 December 2016 515 7 View

Is there general signal peptide for plants?

hi signal peptides are commonly protein-specific, I wonder if there is "general" signal peptides which can be used among plants. Hereby, it would enable more convenient protein expressions in...

31 December 2016 1,797 5 View

Is the Isoelectric Point of the capsid the same of the protein or does it change?

hi I am expressing a Virus Like Particle in Baculovirus System. The virus express a protein that self-assembles itself in a capsid. I know th IP of the protein. Since only one of three domains of...

31 December 2016 5,182 1 View

What is method of finding the cpg islands in promoter region of a gene?

hi I need to identify of cpg islands in the number of genes. Is there someone who guide me ؟

31 December 2016 314 4 View

Can anyone recommend a method to determine if bacteria are hup+ or hup-?

hiI want to measure N fixation as a H2 evolution with a specific device and I need to know if my strain has an active hydrogenase enzyme.

31 December 2016 4,246 2 View

Does anyone know what might be causing the smeared bands on my western blot?

I got these smeared bands quite often lately. We typically run the gel at 140V with a 10-12% gel and do a wet transfer at 220 mA for 1.5 hr in cold room. We also noticed some dirty spots/dots (see...

10 August 2024 7,480 3 View

What precautions should be taken while handling S. aureus enterotoxin Type B in the lab?

I would like to understand potential safety concerns while handling SEB in the lab. Especially while working in animal house facility. Would like to know precautions for handling. Sigma MSDS...

07 August 2024 6,034 3 View

I want to remove Urea from my protein sample?

I want to remove Urea from my protein (6kDa) sample. I did use : 1. Step down the Urea gradient (dialysis) in order to remove urea and refold my protein, but my protein still contains urea in the...

06 August 2024 1,350 4 View

How to understand this crystallographic phenomenon of low temperature crystals in zeolite?

During low-temperature testing, new diffraction peaks that appear could be indicative of several phenomena. In one of our tests, we observed notable new peaks around 40° and 45° in a specific...

06 August 2024 726 3 View

Why is my ASO degraded quickly on agarose gel?

I have been working on Red blood cell-derived extracellular vesicles as Antisense Oligonucleotide (ASO) carriers. We normally run agarose gel to quantify the loading efficiency. I used naked ASO...

06 August 2024 3,130 2 View

Low-yield gel extraction problem?

I am having an issue with my gel image where my PCR product is not appearing very bright on the gel. When I perform gel extraction, the A260/280 purity value is very low. I used the Qiagen gel...

05 August 2024 9,798 3 View

The Optimal Experimental Approach for Gene Function Analysis?

What is the most suitable experimental setting to understand the consequences of a particular gene: (1) targeted degradation of the specific transcription factor (TF) of the gene, followed by...

04 August 2024 6,265 1 View

PCR showing no bands - Master mix and primers didn't mix?

Hello everyone, I performed a PCR yesterday, and the results showed no bands on the gel. Of course, I probably missed some crucial steps, like adding my samples to the PCR strips themselves, for...

31 July 2024 2,406 6 View

How to check pH of a high strength hydrogel?

We are working on biopolymeric hydrogels. Our system is highly viscous and sticky, and the gel formed are high in strength. We are unable to use pH electrode and pH strip. Please suggest an easy...

30 July 2024 942 2 View

How to we see transcription activity of the bhlh79 family is at the N-terminal or C-terminal?

I'm a PhD Student. From Northwest Agriculture and Forestry University China. My Problem is this I start my work on bhlh79 transcription factor gene. I do my Y2H 5 time but the colonies appear on...

30 July 2024 1,412 8 View