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