>1t74A (A:) observed residues (from ATOM records)
qpiflnvleaiepgvvcaghdnnqpdsfaallsslnelgerqlvhvvkwakalpgfrnlh
vddqmaviqyswmglmvfamgwrsftnvnsrmlyfapdlvfneyrmhksrmysqcvrmrh
lsqefgwlqitpqeflcmkalllfsiipvdglknqkffdelrmnyikeldriiackrknp
tscsrrfyqltklldsvqpiarelhqftfdllikshmvsvdfpemmaeiisvqvpkilsg
kvkpiyfht