>1z90A (A:) observed residues (from ATOM records)
enlpqlksavdgltemseseksgfislvsrylsgiewskiqtptdeivvpyekmtpvsqd
vaetknlldklvvlklngglgttmgctgpksvievrdgltfldliviqienlnnkygckv
plvlmnsfnthddthkivekytnsnvdihtfnqskyprvvadefvpwpskgktdkegwyp
pghgdvfpalmnsgkldtflsqgkeyvfvansdnlgaivdltilkhliqnkneycmevtp
ktladvkggtlisyegkvqlleiaqvpdehvnefksiekfkifntnnlwvnlkaikklve
adalkmeiipnpkevdgvkvlqletaagaairffdnaigvnvprsrflpvkassdlllvq
sdlytlvdgfvtrnkartnpsnpsielgpefkkvatflsrfksipsiveldslkvsgdvw
fgssivlkgkvtvaaksgvkleipdravvenkningpedl