Can anyone tell me the largest number of proteins directly extracted from soil ?

Can anyone tell me the largest number of proteins directly extracted from soil ? I am writing a paper about soil protein extraction and wanted to know what sort of yields other researchers were...

31 December 2019 7,930 2 View

We are looking for a Candicidin D standard ?

We are looking for a Candicidin D standard for HPLC and mass spectrometry. It is no longer made by the company listed on PubChem (alpha chemistry). Does anybody have any other suggestions?

31 December 2018 4,280 3 View

Are there specialised methods for extracting DNA from alkaline soils ?

I am conducting a metagenomic analysis of alkaline soil and I wondered if there were any specialised methods of DNA extraction given the alkaline nature of the soil.

07 August 2018 3,112 4 View

What is the maximum growth pH recorded for Streptomyces on solid media ?

I have been characterising a new strain of Streptomyces and was wanting to compare it to other similar alkaliphilic strains of Streptomyces. I have read of figures as high as 11.5 but the...

06 July 2018 1,383 8 View

Can you report a new bacteria on whole genome sequencing alone or do you have to have some polyphasic studies ?

I am being asked to provide polyphasic studies to name a new bacterial species, however, I have already provided the whole genomic sequence together with some comparitive genome analysis and some...

06 July 2018 1,916 0 View

What is the maximum pH level tolerated by Streptomyces coelicolor M145 ?

Are there any references to the maximum pH levels tolerated by strain S. coelicolor M145 ?

03 April 2018 2,449 4 View

What is the average difference in pH of agar before and after sterilisation ?

I had previously made a series of (modified SFM) agars at high alkaline pH 8----->13.6. I did not measure the pH of the resulting solidified agar because it just seemed a bit awkward and I...

02 March 2018 710 4 View

I was wondering if pH regulation in the region of amyloid deposition influences the development of Alzheimers ?

I was wondering if the pH of an environment influences the development of amyloid proteins ? Cellular control of pH is performed by porters/ antiporters. I have searched for these in human...

10 November 2017 9,237 4 View

What is the purpose of multiple copies of antibiotic resistance genes ?

We have sequenced a bacteria and found multiple copies of antibiotic resistance genes. The sequences of the copies are not identical. I was wondering if this diversity of copies is to increase the...

09 October 2017 6,310 13 View

How can you recover a protein sample which is tightly bound to a graphite column ?

I have been using activated carbon columns to clean up protein samples. Protein recovery has been very low. When I use a large amount of protein i.e. 5mg the recovery is only 0.5mg . I was...

09 October 2017 357 1 View

Anyone that can help with Maxquant TMT16plex which is missing?

Hi I am very new to proteomics analysis. I have got raw files from core facility running thermofisher TMT 16plex 4 hours. I cannot find on maxquant the option TMT16Plex there is only up to 11...

25 February 2021 1,675 3 View

How to manage western blot for proteomics data validation?

Hi Everyone, I am a bigginer in western blotting and I am trying to use it for validation of my proteomics data. I have: two regulated proteins with molecular mass of 40 and 73 kDa one control...

23 February 2021 6,671 4 View

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23 February 2021 4,014 3 View

Physical-chemical formation of stalactites/stalagmites. what promotes the formation/growth of these structures?

I know, or think I do, the basic idea behind these natural structures, as from what I know they form due to water dripping from the top leaving a salt deposit behind. But started to wonder about...

22 February 2021 1,400 4 View

Is there an ideal incubation time of RGO-modified SPCE before subsequent use, i.e., electrochemical characterization or further modification?

I notice that upon washing and air-drying of my RGO/SPCE surface and characterizing again via DPV, the current response towards ferricyanide probe significantly decreases. My worry is that the...

22 February 2021 5,324 3 View

How to do a surface treatment of uncoated TiO2 with polymer?

Basically, I would like to know how to treat or coat on the uncoated bare TiO2 (Ti-OH rich) surface with polymer which has anchoring groups in the polymer structure like trimethoxygroups. What is...

21 February 2021 4,657 6 View

How can I measure the surface interaction or surface interfacial chemistry between polishing abrasives and upper surface of substrate ?

I am working on polishing abrasives. I need to do few characterizations ? which can provide the on time surface chemistry of substrate with polishing abrasive during optical polishing. I would...

18 February 2021 5,319 3 View

Unable to detect a truncated protein variant, but I can observe a truncated cDNA from Sanger?

Hi, so basically... I am trying to mimic a clinically observed condition wherein a frame-shift mutation happens only at one allele of the patients, giving rise to a truncated variant which evades...

17 February 2021 1,130 6 View

Why is there violent fluctuation of ThT signal in Amyloid beta aggregation?

Dear all, I am currently working on amyloid beta aggregation. In ThT monitered aggregation assay, I have already obeserved an increase in ThT signal, indicating the aggregation of amyloid beta....

15 February 2021 4,852 2 View

Unusually Busy Raman Background?

Hello, I am observing a nearly periodic background spectrum for a wide variety of SERS substrates. I see this response (attached below) for bare Au films, Cu films, and Au nanoparticles on...

15 February 2021 9,922 5 View