>4y87B (B:) observed residues (from ATOM records)
ptypkyllspetiealrkptfdvwlwepnemlsclehmyhdlglvrdfsinpvtlrrwlf
cvhdnyrnnpfhnfrhcfcvaqmmysmvwlcslqekfsqtdililmtaaichdldhpgyn
ntyqinartelavryndisplenhhcavafqilaepecnifsnippdgfkqirqgmitli
latdmarhaeimdsfkekmenfdysneehmtllkmilikccdisnevrpmevaepwvdcl
leeyfmqsdrekseglpvapfmdrdkvtkataqigfikfvlipmfetvtklfpmveeiml
qplwesrdryeelkriddamkelqkk