Matthew P Padula

2 Questions 64 Answers 0 Followers

Questions related from Matthew P Padula

When peptides are fragmented in CID, the y-ions gain 18Da via a water molecule. I should know this, but where does the water come from?

I really should know the answer to this, but I can't find an article that explains where the water came from. It's not attached to the selected peptide ion because the mass would be 18Da (or...

09 September 2015 409 8 View

Effect of biotinylation on peptide charge state in electrospray mass spectrometry?

Surprisingly there is little concrete info on this. If you biotinylate a protein/peptide (in this case with Sulfo-NHS-LC-Biotin) through a primary amine at the N-termini or lysine side chain, can...

07 July 2013 479 5 View