>2bsbA (A:) observed residues (from ATOM records) avsfigstendvgpsqgsyslpfvydtgynigyqnanvwhisggfcvgldgkvdlpvvgs ldgqsiyglteevglliwmgdtnysrgtamsgnswenvfsgwcvgnyvstqglsvhvrpv ilysvqktsigsirmrpyngssagsvqttvnfslnpftlndt