>4r9mB (B:) observed residues (from ATOM records)
hsvklrpleredlryvhqlvmrywfeepyeafvelsdlydkhihdqserrfvvecdgeka
glvelveinhvhrraefqiiispeyqgkglatraaklamdygftvlnlyklylivdkene
kaihiyrklgfsvegelmheffingqyrnairmcifqhqylae