What happens to levels of reverse gyrase and DNA gyrase as a function of temperature ?

More Bhagya C. Thimmappa's questions See All

Why I am getting same ct values for three different dilutions?

I am setting up qPCR with human DNA and actin primers, it is working with 10 and 1ng dilution but when I am considering 0.1, 0.01 and 0.001 I a getting same ct values for these 3 dilutions, I am...

08 September 2015 9,674 5 View

Hi, how to get tight pellect from a bacterium which is very slimy?

I am working with a bacterium which is very slimy so I am not able to get the tight pellet, but i need to get tight pellet with very less water for further analysis(pigment analysis)...even i...

01 February 2015 9,703 12 View

This question is deleted by the person who posted it.?

11 December 2014 6,733 0 View

In gene prediction algorithms are we taking count of enhancers?

I feel the information about enhancers helps us to predict the gene properly, if a gene function is influenced by enhancers then why we r not counting enhancers while predicting gene? some one...

09 October 2014 3,417 6 View

Can any one help me, how do you sequence a virus which contains many modified bases?

Usually bacteriophage contains modified bases, but we don't know what are those modified bases. In above situation how can i go about sequencing such virus.

07 August 2014 8,018 8 View

Can any one please send me original papers on Genetically modified products.Thank you.

I need original papers on Genetically modified products(successful or failed) example:Crops, Food products ,medicinal products. Thank you.

07 August 2014 365 12 View

Hi everyone does anyone have protocols for the following tests?

Acid produced from: Glucose,D-Mannitol,Salicin,Inositol,Sorbitol,Rhamnose,Maltose,D-XYIOX,Trehalose,Cellobiose,Methyl D-glucoside,Erythritol,Melibiose,D-Mannose. Hydrolysis of: Aesculin,...

06 July 2014 6,011 10 View

Is there are any other modified bases in case of T-even Bacteriophages other than Methylation and glucosylation?

Biological DNA modifications have been studied for many years, and much is known about their distribution and the enzymes involved. Well-known base modifications are C-5-methylcytosine (m5C),...

06 July 2014 6,868 1 View

Is it always necessary to memorise everything?

People will always expect that if a person is doing some research they should remember almost all, is it always necessary?

05 June 2014 8,228 2 View

Does anyone have any idea about PFGE (Pulsed field Gel Electrophoresis)?

I do not understand what is happening with the electricity supply (bidirectional), even though the bidirectional bands are very good.. If the electricity supply is bidirectional, then should the...

03 April 2014 1,246 1 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

Does anyone know HRM channel in a 2 plex QIAGEN Rotor- Gene Q qPCR can be used as a separate channel?

I am going to have 3 different probes in my qPCR work that I am going to do. But I realized that the machine we have in the lab is a Rotor-Gene Q 2plex HRM Platform, saying it has green, yellow,...

01 March 2021 8,544 1 View

Which cell line should we use to perform biological dosimetry experiments?

We are preparing some experiments based on irradiating cells under different conditions in order to evaluate the effects in terms of DNA damage, genetic expression, etc. As our project is...

01 March 2021 3,355 3 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

Calculating volume of DNA required from DNA concentration?

Hi I am a bit confused. They are asking me to find out the volume of DNA required in ul (a total of 30-100 ng for genomic DNA) from the DNA concentration in the nanodrop reading which was 404.8...

26 February 2021 5,029 2 View

Has anyone used the Illumina ITS1 primer sets?

Hi everyone, Illumina provides a list of primers to amplify with high taxonomic coverage the ITS1 region for further fungal sequencing, but I cannot find the exact amount necessary of each...

25 February 2021 6,969 3 View

Errors in DNA sequences?

I am trying to better understand the scope of DNA replication and sequencing errors, e.g. 1. I have seen similar error rates of 10e4 to 10e5 for cell & instrumental DNA replication,...

24 February 2021 4,397 3 View

Can two EC50 values with different hill slopes be compared?

Hello, I fit a classical dose response curve Y=Bottom + (Top-Bottom)/(1+10^((LogEC-X)*HillSlope)) to my data (not related to inhibitors etc). The model I use is purely qualitative but it fits...

23 February 2021 8,155 5 View

What might be the reason for obtaining two bands in plant genomic DNA extraction?

I got a thin band and a thick band i guess it would be the genomic DNA and the 260/280 ratio is 3.

21 February 2021 6,523 6 View

Carlos Aulesa

i DONT kNOW,SORRY

Marc Nadal

The role of reverse gyrase is to introduce a positive supercoiling into DNA and probably to remove very efficiently the negatively supercoils produced during DNA tracking processes. Conversely, DNA gyrase removes the positive supercoils and introduces negative supercoils in DNA. A temperature shift changes the helical repeat of the DNA and consequently modifies the superhelical density of the chromosome. After such temperature shift, a regulation of the DNA topoisomerases occurs leading to a new superhelical density equilibrium.