>1f6aB (B:) observed residues (from ATOM records)
pcdsnprgvsaylsrpspfdlfirksptitclvvdlapskgtvnltwsrasgkpvnhstr
keekqrngtltvtstlpvgtrdwiegetyqcrvthphlpralmrsttktsgpraapevya
fatpewpgsrdkrtlacliqnfmpedisvqwlhnevqlpdarhsttqprktkgsgffvfs
rlevtraeweqkdeficravheaaspsqtvqravsvn