>1w4rA (A:) observed residues (from ATOM records)
rgqiqvilgpmfsgkstelmrrvrrfqiaqykclvikyakdtrysssfcthdrntmealp
acllrdvaqealgvavigidegqffpdivefceamanagktvivaaldgtfqrkpfgail
nlvplaesvvkltavcmecfreaaytkrlgtekeveviggadkyhsvcrlcyfk