>4zo4B (B:) observed residues (from ATOM records) amknaffvtasiacgkstfieianslgfksisadkiahkildenalelekifspfslknl lkkekkidrkilgeivfnnkeakkilenfthpkirakileqmqildkenkaffveiplfe nlgkviviytpkelslkrimqrdklsleaakarldsqidieeklkkadfiikntnsyadf rqecvkviqeiskg