>3ts7A (A:) observed residues (from ATOM records)
erslsdfmrssqerveraldarlpaadrmperlhqamrysvlgggkrmrplltyatgqti
gvaadlldgpacavefihvyslihddlpamddddlrrgkptchkaydeatailagdglqa
lafhvlaqdpsiavpaenriamietlakasgpagmvggqaidlasvgkkldlpglenmhi
rktgalirasvrlaclarpglpaeqfdrldhyakciglafqiqddildeesdkpnypall
glsgakekaeemheaaleslagfgpeadllrelarfiiqrqsaenlyfq