>4tw1E (E:) observed residues (from ATOM records)
gdtkmytrtattsdsqknitqslqfnfltepnydketvfikakgtigsglrildpngywn
stlrwpgsysvsiqnvddnnntnvtdfapknqdesrevkytygyktggdfsinrggltgn
itkesnysetisyqqpsyrtlldqstshkgvgwkveahlinnmghdhtrqltndsdnrtk
seifsltrngnlwakdnftpkdkmpvtvsegfnpeflavmshdkkdkgksqfvvhykrsm
defkidwnrhgfwgywsgenhvdkkeeklsalyevdwkthnvkfvkvlnd