For example, the phosphorylation site of a phosphopeptide can be determined by a mechanism in which the phosphopeptide first binds to one of {HEAD ~ the metals} in the ESI capillary, then {TAIL ~ an electron} is removed from the metal by the corona discharge electrochemical ionization process 
For example , the phosphorylation site of a phosphopeptide can be determined by a mechanism in which the phosphopeptide first binds to one of { HEAD ~ the metals } in the ESI capillary , then { TAIL ~ an electron } is removed from the metal by the corona discharge electrochemical ionization process
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH