>2bm4B (B:) observed residues (from ATOM records)
qwvdceftgrdfrdedlsrlhteramfsecdfsgvnlaesqhrgsafrnctferttlwhs
tfaqcsmlgsvfvacrlrpltlddvdftlavlggndlrglnltgcrlretslvdtdlrkc
vlrgadlsgarttgarlddadlrgatvdpvlwrtaslvgarvdvdqavafaaahglclag