Host-defence skin peptides of the Australian Streambank Froglet Crinia riparia: isolation and sequence determination by positive and negative ion electrospray mass spectrometry

2006 ◽  
Vol 20 (5) ◽  
pp. 797-803 ◽  
Author(s):  
Vita M. Maselli ◽  
Daniel Bilusich ◽  
John H. Bowie ◽  
Michael J. Tyler
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Mass Spectrometry ◽  
Host Defence ◽  
Negative Ion ◽  
Sequence Determination

Determination of Solution Ions by Electrospray Mass Spectrometry

1994 ◽  
Vol 48 (6) ◽  
pp. 655-661 ◽  
Author(s):  
George R. Agnes ◽  
Gary Horlick
Keyword(s):  
Mass Spectrometry ◽  
Metal Ion ◽  
Gas Flow ◽  
Electrospray Mass Spectrometry ◽  
Negative Ion ◽  
Molecular Forms ◽  
Mass Spectral ◽  
Oxo Anions ◽  
Electrospray Source

Spectral results are presented illustrating the capability of electrospray mass spectrometry (ES-MS) for the determination of the composition of solution samples. The solution components that can be determined include the elemental and molecular forms of anions and cations. Three modes of positive-ion ES-MS are described: the ion cluster mode, the metal-ion mode, and an intermediate mode. The modes are established by operating the electrospray source at specific voltages and curtain gas flow rate values, and each mode provides a unique mass spectral picture of the solution components with primary focus on cationic species (i.e., metal ions). Results are also presented for operation of the electrospray source in negative-ion mode. In this mode both elemental anions (i.e., halides) and molecular anions (i.e., oxo-anions) can be determined.

Skin peptides from anurans of theLitoria rubellaGroup: sequence determination using electrospray mass spectrometry. Opioid activity of two major peptides

2009 ◽  
Vol 23 (8) ◽  
pp. 1189-1195 ◽  
Author(s):  
Rebecca J. Jackway ◽  
Vita M. Maselli ◽  
Ian F. Musgrave ◽  
Micheal J. Maclean ◽  
Michael J. Tyler ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Mass Spectrometry ◽  
Sequence Determination ◽  
Opioid Activity
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