>3fcxB (B:) observed residues (from ATOM records)
lkqissnkcfgglqkvfehdsvelnckmkfavylppkacpalywlsgltcteqnfisksg
yhqsasehglvviapdtsprgcnikgedeswdfgtgagfyvdatedpwktnyrmysyvte
elpqlinanfpvdpqrmsifghsmgghgalicalknpgkyksvsafapicnpvlcpwgkk
afsgylgtdqskwkaydathlvksypgsqldilidqgkddqflldgqllpdnfiaactek
kipvvfrlqedydhsyyfiatfitdhirhhakyln