An electrospray ionization mass spectrometric study of the extracellular hemoglobins from Chironomus thummi thummi

1998 ◽  
Vol 1383 (1) ◽  
pp. 143-150 ◽  
Author(s):  
Brian N Green ◽  
Askar R Kuchumov ◽  
Thomas Hankeln ◽  
Erwin R Schmidt ◽  
Gerald Bergtrom ◽  
...  
Keyword(s):  
Electrospray Ionization ◽  
Mass Spectrometric Study ◽  
Mass Spectrometric ◽  
Ionization Mass ◽  
Spectrometric Study ◽  
Chironomus Thummi

Complexes between some lysine-containing peptides and crown ethers—electrospray ionization mass spectrometric study

2007 ◽  
Vol 42 (4) ◽  
pp. 459-466 ◽  
Author(s):  
Rafał Frański ◽  
Grzegorz Schroeder ◽  
Wojciech Kamysz ◽  
Pawel Niedzialkowski ◽  
Tadeusz Ossowski
Keyword(s):  
Electrospray Ionization ◽  
Crown Ethers ◽  
Mass Spectrometric Study ◽  
Mass Spectrometric ◽  
Ionization Mass ◽  
Spectrometric Study

Electrospray ionization mass spectrometric study of thallium complexes with nucleosides

2017 ◽  
Vol 23 (5) ◽  
pp. 300-304
Author(s):  
Magdalena Frańska
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Ionization ◽  
Electrospray Ionization Mass Spectrometry ◽  
Mass Spectrometric Study ◽  
Mass Spectrometric ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Spectrometric Study ◽  
Relative Affinity ◽  
Relative Abundances

The complexes between Tl+, K+, and nucleosides were studied by using electrospray ionization mass spectrometry. It was found that for complexes of 1:1 stoichiometry, thallium complexes with cytidine were the most abundant and thallium complexes with guanosine were the second most abundant ones. The relative abundances of cytidine–Tl+ to cytidine–K+ complexes depended on stoichiometry (at higher stoichiometry the potassium complexes were more abundant). In other words, the relative affinity of Tl+ and K+ to form cytidine complexes depends on the stoichiometry of the formed complexes. Guanosine–Tl+ complexes were more abundant than guanosine–K+ complexes, irrespective of stoichiometry. Both guanosine tetramer and mixed cytidine/guanosine tetramer were more abundant when they were stabilized by thallium than potassium. Therefore, Tl+ may affect the K+ stabilization of these tetramers.

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