>3ur5B (B:) observed residues (from ATOM records)
drintvrgpitiseagftlthehicgssagflrawpeffgsrkalaekavrglrraraag
vrtivdvstfdigrdvsllaevsraadvhivaatglwfdpplsmrlrsveeltqfflrei
qygiedtgiragiikvattgkatpfqelvlraaaraslatgvpvtthtaasqrdgeqqaa
ifeseglspsrvcighsddtddlsyltalaargyligldhiphsaigasasallgnrswq
trallikalidqgymkqilvsndwlfgfssyvtnimdvmdrvnpdgmafiplrvipflre
kgvpqetlagitvtnparflspt