>3prvA (A:) observed residues (from ATOM records)
tsertfiavkpdgvqrclvgeiiqrfekkgyklvalkmlqpsaeqaqqhyidlaskpfyk
dlvayfssgpivgmvwegkgvvkggrvllgatnpadslpgtirgdfavdvgrnvchgsds
vdsakreiafwfkpeelvnwtshsvkqvye