>6fw1A (A:) observed residues (from ATOM records)
drintvrgpitiseagftlthehicgssagflrawpeffgsraalvekavrglrraraag
vrtivdvstfdigrdvsllaevsraadvhivaatglwedpplsmrlrsveeltqfflrei
qygiedtgiragiikvatngkatpfqelvlraaaraslatgvpvtthtaasqrdgeqqaa
ifeseglspsrvcighsddtddlsyltalaargyligldgiphsaiglednasasallgn
rswqtrallikalidqgymkqilvsndwlfgfssyvtnimdvmdsvnpdgmafiplrvip
flrekgvsqetlagitvtnparflsptlra