Why just some proteins and peptids cause amyloid diseases?

As we know so far, around 25 proteins and peptides are known to involve in amyloid disease. If we assume that the fibrillation is an intrinsic feature of all polypeptides, and that we have tens...

31 December 2018 3,146 3 View

Which system is better for overexpresion of alpha-synuclein in a dopaminergic cell line such as SH-SY5Y : adenoviral vector or lentiviral vector?

06 July 2015 3,288 6 View

Is it acceptable to analyze the significance of an inhibitory effect with anova-test or t-student?

Is it Ok to Analysis of the significantly / meaningfully of an inhibitory effect with anova-test or t-student?We work on a compound which can decrease the cytotoxicity effect of another compound...

11 December 2014 9,777 3 View

Why are FTIR and AFM results inconsistent with Far-UV CD ones for the fibril form of a protein?

We are working with a protein to induce fibrillation forms. Our FTIR (deep peak at 1624 qnd 1695) results and AFM images (twisted long fiberils) confirmed fibril formation. In spite of these...

08 September 2014 2,563 10 View

Does anyone purify recombinant alpha synuclein?

06 July 2014 9,137 3 View

Why does the presence of mold and yeast cause pH elevation but bacteria cause opposite effect on cell culture?

Why does the presence of different contamination change the pH of media in different ways?

04 May 2014 3,104 1 View

What happens to the regions of proteins which do not participate in fibrillation of proteins?

In many proteins such as lysozyme and alpha-synuclein, only a limited part of protein participate in cross-beta sheet and fibril formation. In alpha synuclein from 140 residues only about 60...

01 February 2014 1,356 0 View

Buffer to disrupt platelet alpha granules for PF4 quantification?

Hello! I want to quantify by ELISA the secreted (from platelets poor plasma) and the non-secreted (from platelet lysate) PF4 before and after TRAP stimulation. I will use the ELISA from R&D...

03 March 2021 1,499 2 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Buffer Exchange using column packed with sephadex G-25 effect on protein concentration?

Hello, If i am doing a buffer exchange for an antibody of 1mg/mL, does the elution lose protein in the process of buffer exchange? For example, if i flow through 500 uL of 1mg/mL sample, and...

03 March 2021 6,299 3 View

How to quantitative analize the data of TNBS assay for gelatin?

Estemeed colleagues, I found some issues regarding the quantification of the data for TNBS assay. There are different protocols on how to perform that but it is clear to me the "fil rouge" that...

02 March 2021 2,616 1 View

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

Why are my bands weird in this Agarose gel?

Can someone please give me some possible things that could go wrong? Here is my recipe: 0.5g Agarose 50 mL of TAE 1x 1 uL ethyl bromide. Gel was run at 100V for 1 hour. The buffer used is also TAE.

01 March 2021 9,952 3 View

How to simultaneously perform multiple biochemical assays?

I am a research scholar working on heavy metal stress on plants. I will be doing biochemical characterisation( protein, carbohydrate, proline, antioxidant enzymes and many more assays) at interval...

01 March 2021 6,999 3 View

What do I do with DLS peaks that are from the buffer?

I'm looking at the aggregation of my protein sample using DLS. Unfortunately, my buffer (20mM HEPES) also results in a set of peaks. These are at approximately 1 and 1000 d.nm. The lowest peak...

01 March 2021 9,015 2 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

RIA. How to measure?

When you use RIA, with a control the unknown sample with antibodies, you bare in mind the binding sites of the antibodies. However you still need to measure labelled antigen (radioactive) and not...

28 February 2021 2,133 3 View