>1r88B (B:) observed residues (from ATOM records)
aapyenlmvpspsmgrdipvaflaggphavylldafnagpdvsnwvtagnamntlagkgi
svvapaggaysmytnweqdgskqwdtflsaelpdwlaanrglapgghaavgaaqggygam
alaafhpdrfgfagsmsgflypsntttngaiaagmqqfggvdtngmwgapqlgrwkwhdp
wvhasllaqnntrvwvwsptnpgasdpaamigqaaeamgnsrmfynqyrsvgghnghfdf
pasgdngwgswapqlgamsgdivgair