>3p4iB (B:) observed residues (from ATOM records)
arrvlvinsgssslkfqlvdpesgvaastgiverigeesspvpdhdaalrrafdmlagdg
vdlntaglvavghrvvhggntfyrptvlddaviarlhelselaplhnppallgievarrl
lpgiahvavfdtgffhdlppaaatyaidreladrwqirrygfhgtshryvseqaaafldr
plrglkqivlhlgngcsasaiagtrpldtsmgltpleglvmgtrsgdidpsvvsylchta
gmgvddvesmlnhrsgvvglsgvrdfrrlreliesgdgaaqlaysvfthrlrkyigayla
vlghtdvisftagigendaavrrdavsgmeelgivlderrnlpgakgarqisaddspitv
lvvptneelaiardcvrvlgg