>6b3sB (B:) observed residues (from ATOM records)
ekkvcngigigefkdslsinatnikhfknctsisgdlhilpvafrgdsfthtppldpqel
dilktvkeitgflliqawpenrtdlhafenleiirgrtkqhgqfslavvslnitslglrs
lkeisdgdviisgnknlcyantinwkklfgtsgqktkiirnrgensckatgqvchalcsp
egcwgpeprdcvsc