>1z1bB (B:) observed residues (from ATOM records)
herrdlppnlyirnngyycyrdprtgkefglgrdrriaiteaiqanielfsghkhkplta
rinsdnsvtlhswldryekilasrgikqktlinymskikairrglpdapledittkeiaa
mlngyidegkaasaklirstlsdafreaiaeghittnhvaatraakskvrrsrltadeyl
kiyqaaesspcwlrlamelavvtgqrvgdlcemkwsdivdgylyveqsktgvkiaiptal
hidalgismketldkckeilggetiiastrreplssgtvsryfmrarkasglsfegdppt
fhelrslsarlyekqisdkfaqhllghksdtmasqyrddrgrewdkieik