Which preparative resin or gel would be ideal to separate a peptide from the mixture of amino acids, amino acid derivatives, vitamins and organic acids?
Please suggest.
Antierum titer determination is usually done by its serial dilution and then taking the lowest positive value in comparison to blank. People take minimum twice or thrice of blank as positive...
31 December 2014 3,586 2 View
In antibody titer determination, we generally compare the signal to noise ration. I guess 2:1 or 3:1 is taken as a positive titer. Is this also referred to as good titer? Are there any references...
10 November 2014 6,349 4 View
Antibodies were raised against the whole cell extract.
03 April 2014 1,590 0 View
To remove any doubt all other aspects were checked such as blocking buffer, plates, etc...
03 April 2014 2,477 8 View
My sample contains a peptide which is acidic in nature of very very low concentration and with not known sequence. How can I isolate it and identify it. I already used SEC and IOn exchange to...
01 February 2012 1,820 8 View
A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...
11 August 2024 9,801 2 View
Can anyone explain this method? Especially the last statement where it says only at 1.5 to 2.5mins was the MS/MS connected to the UPLC. How is that possible, is it a feature in this specific...
11 August 2024 8,141 3 View
Hello experts, Does anyone know any free software about retention index prediction ?
08 August 2024 7,403 2 View
I'm working on selecting antibodies against a recombinant protein that has a His-tag. My idea is to first bind the recombinant protein to a HisTRAP column and then use this column for an affinity...
07 August 2024 505 3 View
Why is TLC not a form of partition chromatography and paper chromatography not a form of absorption chromatography?
03 August 2024 7,035 3 View
or we can collaborate
01 August 2024 6,705 2 View
I need something like Camag's VisionCat software for photodocumentation of TLCs. Could you recommend something?
31 July 2024 8,415 1 View
Hi everyone, I'd like to better separate two close peaks coming from a bioconversion sample, I'm currently using a C18 KromaPhase 4,6mm Ø.I. SCHARLAU, particle size (µm): 10, pore size (Å): 100,...
30 July 2024 435 3 View
I am working on algal extract to which gas chromatography (Not GC-MS) spectrum I want to discover. My question is can we identify specific compounds using retention time if I compared the RT with...
29 July 2024 8,034 4 View
I'm having problems with ion exchange chromatography. After applying my sample (a fluorescent protein), a preferential path inevitably forms. The matrix I use is DEAE-Sephacel. Could someone...
27 July 2024 6,605 0 View