39 research outputs found
Fragmentation of protonated dipeptides containing arginine. Effect of activation method
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Structural characterization of intact proteins is enhanced by prevalent fragmentation pathways rarely observed for peptides
Full text linkComparison of dissociation of ions in an electrospray source, or a collision cell in tandem mass spectrometry
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Peptide aldehyde reactivity in aqueous solution: influence of the hydrated form studied by electrospray mass spectrometry
No full textLocation and base selectivity on fragmentation of brominated oligodeoxynucleotides
No full textBromine-modified oligodeoxynucleotides (ODNs) were fragmented in the electrospray source to study the influence of brominated bases on fragmentation. Several 13-mer ODNs containing a brominated pyrimidine base, BrdU (5-bromodeoxyuridine) or BrdC (5-bromodeoxycytidine), were analyzed. Low cone voltage fragmentation yields a loss of the brominated base with a preferential loss for the brominated base closer to the 5-end (2-position > 4-position > 12-position) as well as a preferential loss of BrdU over BrdC. Higher cone voltage produces backbone fragmentation with complementary an-base and wm ions close to the brominated base. On the basis of these observations, we located the brominated base in the sequence for all of the ODNs studied
Voermethode, bedrijfsvoering, stalinrichting en diergedrag bij geïntegreerde groepshuisvesting van zeugen
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