How to stabilizen n acetyl cysteine in solution?

More Mohsen Navari's questions See All

What is/are the best ML classifier(s) for Sentinel2 images?

Hi I am trying to segment a sentinel2 image. At this stage, I want to run a binary classifier that assigns each pixel to either farm or non-farm pixel. For this purpose, I have 4 10m bands...

15 February 2021 3,596 9 View

Does sds interfere with immunization?

I want to extract a protein from polyacrylamide gel to be used for immunization. I am wondering if I need to run PAGE since sds might interfere with the immunization process. Thank you

10 February 2021 8,568 3 View

What reference do you recommend about doublet lattice method (DLM) coupling with finite element method (FEM) ?

I want to write a code related to the flutter of aeroelastic wing under unsteady load using doublet lattice method (DLM). I want a good reference with numerical examples or a book which learn me...

25 January 2021 7,488 3 View

Recombinant restriction enzyme: how strong should the corresponding methyltransferase expression level be?

Hello. We are planning expression of a restriction enzyme in E. coli, and wondering how much of the corresponding methyltransferase is needed to be expressed in order to protect the host genome...

23 January 2021 2,096 4 View

I'm looking for different RCA's classifications in America?

Please help me find a brief history of Recycled Concrete Aggregate (RCA) CLASSIFICATION in the U.S. any paper or Official U.S. state DOTs' document. Target: To find out how many classifications of...

12 January 2021 7,564 3 View

What is the best statistical method for analysis of pooled fecal samples?

Hello We performed a study on the intestinal microbiota of rats in six intervention groups (8 rats in each group). It is suggested that since the rats in each group were the same in terms of...

10 January 2021 2,507 4 View

What are the best new released researches regarding income inequality in India ?

I need to survey the result of the inquiries regarding the origins of the reproduction of income inequality in the india for literature review of my thesis.

23 December 2020 850 3 View

How to read an HPLC report?

I have four HPLC graphs (for methyl ethyl ketone (MEK) and sulfuric acid and little organic monomers) and I want to analyze them. Is there anyone who can help me with this?

23 December 2020 6,180 3 View

Which free software you prefer to get your STL file measurements ?

here I'm asking about different variants of 3D software's used to get STL file measurements made from CBCT

20 December 2020 4,450 2 View

How to solve OdbError in Abaqus Python script?

I am running a 3D solid model in Abaqus Python script, which is supposed to be analyzed for 200 times as the model has been arranged in a for loop (for i in range(0,199):). Sometimes, I receive...

09 December 2020 7,401 3 View

Any probe or assay for the detection of Cysteine in yeast invivo ?

Dear fellow researchers, I would like to detect the cysteine levels for yeast in vivo. I would really appreciate if anyone could suggest me any fluorescent probe or assay kit available. Currently...

11 February 2021 3,292 3 View

Is there any ingredient I an add into formula to slow down gas generation from Vitamin C?

I know Vitamin C is unstable and tends to be oxidized quickly. The problem here is I made a Vitamin C beverage at pH 4-5, and it starts to generate gas in the packaging, especially at high...

13 December 2020 6,055 1 View

Is RabGTPase prenylation reversible or not?

Hi all, I'm working on RAB10, which is a small RabGTPase and is geranylgeranylated at his c-terminal cysteine residues. This is important for membrane insertion. I'm wondering if this...

04 December 2020 4,026 1 View

I need help in peptide oxidation during deprotection group removal?

Hey! I need help on peptide (22 aa) oxidation.This peptide has no methionine, 1 tryptophan & 1 tyrosine. also has 4 cysteine so I used 2 protection groups (trt & acm). For ACM removal, I...

03 December 2020 3,225 2 View

Besides, DMSO, EDTA, and K2Cr2O7 to scavenge the OH radicals, holes, and electrons respectively what are the other chemicals being used for scavengin?

Besides, DMSO, EDTA, and K2Cr2O7 to scavenge the OH radicals, holes, and electrons respectively what are the other chemicals being used for scavenging? Please share the files with complete...

30 November 2020 4,935 1 View

How to reduce (which reducing agent) a disulfide bridge in a protein and how long does it remain reduced?

I want to reduce the disulfide bridge in my 7kDa protein. My protein has only 1 cysteine at the surface and thus makes a homodimer using a disulfide bridge. I want to reduce the disulfide bridge...

24 November 2020 3,211 5 View

Can you help me figure out how many EDTA I need to add in the solution?

Composition 2X Loading dye for RNA electrophoresis 95% formamide 0.025% SDS 0.025% bromophenol blue 0.025% xylene cyanol FF 0.025% ethidium bromide 0.5 mM EDTA. I wanna to prepare 10 ml of the...

10 November 2020 4,759 3 View

What is the best method to check interaction between a drug and a protein ?

Hi, I would like to know the best method to check the interaction between a proteine (cruzipain, cysteine protease) and a drug. It has been purposed to our project to evaluate protein-drug...

30 October 2020 7,209 3 View

Could bone tissue be saved in 70% EtOH after decalcification before processing?

I got the mouse tibia and femur tissue harvested, fixed with formalin 48h and decalcified with 14% EDTA 72h before paraffin embedding. This protocol works well for both HE and IHC. Now, for the...

18 October 2020 5,318 1 View

Does anyone experienced EDTA salts precipitation in DMSO?

I added 2 mL of 0.1 M EDTA aqueous solution pH 6, to a solution of 3 mL pure DMSO and instantaneously I observed salt precipitation in solution. Is this happening because the pH of the EDTA...

17 October 2020 6,329 1 View

Marc Herb

Hey Mohsen,

we keep our NAC stock solution at 4 °C without any additive substances and it is usable for at least a year. We prepare a 500 mM Stock NAC (Sigma-Aldrich) in PBS and adjust the pH to 7.4 and sterile filter it. It will fall out a little bit over time in storage, but short vortexing gets it quickly dissolved again and usable.

I hope that helps you,

All the best and stay healthy,

Marc