The complex then dissociates into fragment ions yielding valuable structural information about {HEAD ~ the peptide} such as {TAIL ~ amino acid sequencing information} 
The complex then dissociates into fragment ions yielding valuable structural information about { HEAD ~ the peptide } such as { TAIL ~ amino acid sequencing information }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL