>1rtfB (B:) observed residues (from ATOM records)
ikgglfadiashpwqaaifakhrgerflcggilisscwilsaahcfqerfpphhltvilg
rtyrvvpgeeeqkfevekyivhkefdddtydndiallqlksdssrcaqessvvrtvclpp
adlqlpdwtecelsgygkhealspfyserlkeahvrlypssrctsqhllnrtvtdnmlca
gdtrsnlhdacqgdsggplvclndgrmtlvgiiswglgcgqkdvpgvytkvtnyldwird
nmrp