>1t75B (B:) observed residues (from ATOM records)
kdidtlisnnalwskmlveedpgffeklaqaqkprflwigcsdsrvpaerltglepgelf
vhrnvanlvihtdlnclsvvqyavdvlevehiiicghygcggvqaavenpelglinnwll
hirdiwfkhssllgempqerrldtlcelnvmeqvynlghstimqsawkrgqkvtihgway
gihdgllrdldvtatnretleqryrhgisnlklk