>1z90B (B:) observed residues (from ATOM records)
lpqlksavdgltemseseksgfislvsryliewskiqtptdeivvpyekmtpvsqdvaet
knlldklvvlklngglgttmgctgpksvievrdgltfldliviqienlnnkygckvplvl
mnsfnthddthkivekytnsnvdihtfnqskyprvvadefvpwpskgktdkegwyppghg
dvfpalmnsgkldtflsqgkeyvfvansdnlgaivdltilkhliqnkneycmevtpktla
dvkggtlisyegkvqlleiaqvpdehvnefksiekfkifntnnlwvnlkaikklveadal
kmeiipnpkevdgvkvlqletaagaairffdnaigvnvprsrflpvkassdlllvqsdly
tlvdgfvtrnkartnpsnpsielgpefkkvatflsrfksipsiveldslkvsgdvwfgss
ivlkgkvtvaaksgvkleipdravvenkningped