>1t75A (A:) observed residues (from ATOM records)
kdidtlisnnalwskmlveedpgffeklaqaqkprflwigcsdsrvpaerltglepgelf
vhrnvanlvihtdlnclsvvqyavdvlevehiiicghygcggvqaavenpelglinnwll
hirdiwfkhssllgempqerrldtlcelnvmeqvynlghstimqsawkrgqkvtihgway
gihdgllrdldvtatnretleqryrhgisnlklk