How to completely reduce IgG into 50KDa and 25KDa two fragments by DTT?

Conjugation of PEG-Amine to an Amino Acid Using EDC?

I am attempting to conjugate PEG to an amino acid at the C-terminus, for the purposes of producing nanoparticles. I have been told that PEG modified with amine groups can be used for this purpose,...

31 July 2024 2,033 1 View

EDC carbodiimide and NHS easter 's half life among different pH?

It has been long known that EDC carbodiimide and NHS easter's half life agains hydrolysis are highly related to pH. However, very surprisingly, not yet found a paper giving a table/chart of their...

25 July 2024 8,738 0 View

What does the difference \lambda_j - \lambda_{j+1} represent in relation to the conjugate partition of \lambda?

For a partition of an integer \lambda, what does the difference \lambda_j - \lambda_{j+1} represent in relation to the conjugate partition, , with \lambda_j being the j-th element of \lambda?

23 July 2024 8,008 1 View

Is it possible to conjugate an NHS ester to the N-terminus of a peptide ON RESIN?

So i have a few peptides (synthesized by SPPS and not cleaved from resin) and I want to add a maleimide label. We have NHS-PEG-Maleimide and from literature it is evident that the free amine group...

18 July 2024 4,075 3 View

What does an additional peak in FTIR between 3100 and 3300 nm affect the quality of the material, benzethonium chloride USP??

I do not know much about FTIR! The material Benzethonium Chloride USP was compared to a reference standard in regards to FTIR, as per the USP testing: Identification B. Infrared absorption (FTIR),...

16 July 2024 6,918 7 View

Does anybody have Anti-Claudin8 and Anti-Claudin2 Primary conjugated Ab (Target Species: Human)?

I need Anti-Claudin8 Primary and Anti-Claudin2 conjugated Ab for my immunofluorescence experiment. If anybody has worked on it. Please share the accession number/details.

14 July 2024 485 0 View

Would it be possible to determine how many Cys I have based on Ellman's assay?

I want to predict the DAR ratio based on the number of cys available for conjugation to Cys residue. I use Ellman's assay to predict the concentration of Cys after TCEP reduction. I gain a...

02 July 2024 612 6 View

Conjugate Pad absorption suddenly changed?

Hello, I am doing some testing on lateral flow devices/materials and have run into a slight issue where I do not understand what the cause may be, but I have some ideas. General Experimental...

01 July 2024 7,960 3 View

What type of paraffin is recommended for preparing samples for cutting with a microtome?

Sample type: Corn leaves and stem Bean leaves and stem

22 June 2024 2,082 3 View

What is best stabilizing buffer for conjogation of quantum dots to antibodies?

We are researching the conjugation of various antibodies to quantum dot microspheres and europium microspheres. The sustainability results have been unsatisfactory. Which stabilizing buffers do...

25 May 2024 7,663 3 View