>1by3A (A:) observed residues (from ATOM records)
sawgpaatiaarqsatgtktdtpiqkvpqsisvvtaeemalhqpksvkealsytpgvsvg
trgasntydhliirgfaaegqsqnnylnglklqgnfyndavidpymleraeimrgpvsvl
ygksspggllnmvskrptteplkevqfkagtdslfqtgfdfsdsldddgvysyrltglar
sanaqqkgseeqryaiapaftwrpddktnftflsyfqnepetgyygwlpkegtveplpng
krlptdfnegaknntysrnekmvgysfdhefndtftvrqnlrfaenktsqnsvygygvcs
dpanayskqcaalapadkghylarkyvvddeklqnfsvdtqlqskfatgdidhtlltgvd
fmrmrndinawfgyddsvpllnlynpvntdfdfnakdpansgpyrilnkqkqtgvyvqdq
aqwdkvlvtlggrydwadqeslnrvagttdkrddkqftwrggvnylfdngvtpyfsyses
fepssqvgkdgnifapskgkqyevgvkyvpedrpivvtgavynltktnnlmadpegsffs
veggeirargveieakrplsasvnvvgsytytdaeyttdttykgntpaqvpkhmaslwad
ytffdgplsgltlgtggrytgssygdpansfkvgsytvvdalvrydlarvgmagsnvalh
vnnlfdreyvascfntygcfwgaerqvvatatfrf