>1t75D (D:) observed residues (from ATOM records)
kdidtlisnnalwskmlveedpgffeklaqaqkprflwigcsdsrvpaerltglepgelf
vhrnvanlvihtdlnclsvvqyavdvlevehiiicghygcggvqaavenpelglinnwll
hirdiwfkhssllgempqerrldtlcelnvmeqvynlghstimqsawkrgqkvtihgway
gihdgllrdldvtatnretleqryrhgisnlklk