wherein Asn and {HEAD ~ His} represent {TAIL ~ an asparagine residue} and a histidine residue, respectively, and X represents a hydrogen atom or a sugar chain, and A and B each represent independently a hydrogen atom or an amino acid residue 
represent
wherein Asn and { HEAD ~ His } represent { TAIL ~ an asparagine residue } and a histidine residue , respectively , and X represents a hydrogen atom or a sugar chain , and A and B each represent independently a hydrogen atom or an amino acid residue
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH