>4tw1G (G:) observed residues (from ATOM records)
gdtkmytrtattsdsqknitqslqfnfltepnydketvfikakgtigsglrildpngywn
stlrwpgsysvsiqnvddnnntnvtdfapknqdesrevkytygyktggdfsinrggltgn
itkesnysetisyqqpsyrtlldqstshkgvgwkveahlinnmghdhtrqltndsdnrtk
seifsltrngnlwakdnftpkdkmpvtvsegfnpeflavmshdkkdkgksqfvvhykrsm
defkidwnrhgfwgywsgenhvdkkeeklsalyevdwkthnvkfvkvlnd