>3p4iA (A:) observed residues (from ATOM records)
arrvlvinsgssslkfqlvdpesgvaastgiveriesspvpdhdaalrrafdmlagdgvd
lntaglvavghrvvhggntfyrptvlddaviarlhelselaplhnppallgievarrllp
giahvavfdtgffhdlppaaatyaidreladrwqirrygfhgtshryvseqaaafldrpl
rglkqivlhlgngcsasaiagtrpldtsmgltpleglvmgtrsgdidpsvvsylchtagm
gvddvesmlnhrsgvvglsgvrdfrrlreliesgdgaaqlaysvfthrlrkyigaylavl
ghtdvisftagigendaavrrdavsgmeelgivlderrnlpgakgarqisaddspitvlv
vptneelaiardcvrvlgg