>3bsyB (B:) observed residues (from ATOM records) artekiyiygasghglvcedvaknmgykeciflddfkgmkfestlpkydffiaignneir kkiyqkisengfkivnlihksalispsaiveenagilimpyvvinakakiekgvilntss viehecvigefshvsvgakcagnvkigkncflginscvlpnlsladdsilgggatlvknq dekgvfvgvpakrm