>3stiB (B:) observed residues (from ATOM records) plpslapmlekvlpavvsvrvglgsgviinaskgyvltnnhvinkisiqlndgrefdakl igsddqsdiallqiqnpskltqiaiadsdklrvgdfavavgnpfglgqtatsgivsalgr sgllenfiqtdasinrgnsggallnlngeligintailvgigfaipsnmartlaqqlidf geil