>1sioA (A:) observed residues (from ATOM records)
aaptaytpldvaqayqfpegldgqgqciaiielgggydeaslaqyfaslgvpapqvvsvs
vdgasnqptgdpsgpdgeveldievagalapgakfavyfapntdagfldaittaihdptl
kpsvvsiswggpedswtsaaiaamnrafldaaalgvtvlaaagdsgstdgeqdglyhvdf
paaspyvlacggtrlvasggriaqetvwndgpdggatgggvsrifplpawqehanvppsa
npgassgrgvpdlagnadpatgyevvidgeatviggtsavaplfaalvarinqklgkavg
ylnptlyqlpadvfhditegnndianraqiyqagpgwdpctglgspigvrllqallp