>6fr2A (A:) observed residues (from ATOM records)
ptscnpsdmshgyvtvkprvrlhfvelgsgpavclchgfpeswyswryqipalaqagyrv
lamdmkgygessappeieeycmevlckemvtfldklglsqavfighdwggmlvwymalfy
pervravaslntpfipanpnmsplesikanpvfdyqlyfqepgvaeaeleqnlsrtfksl
frasdesvlsmhkvceagglfvnspeepslsrmvteeeiqfyvqqfkksgfrgplnwyrn
mernwkwackslgrkilipalmvtaekdfvlvpqmsqhmedwiphlkrghiedcghwtqm
dkptevnqilikwldsdar