>3fa4B (B:) observed residues (from ATOM records)
pmvtaatslrralenpdsfivapgvydglsarvalsagfdalymtgagtaasvhgqadlg
ictlndmranaemisnispstpviadadtgyggpimvartteqysrsgvaafhiedqvqt
kkilvdtdtyvtriraavqarqrigsdivviartdslqthgyeesvarlraardagadvg
flegitsremarqviqdlagwplllnmvehgatpsisaaeakemgfriiifpfaalgpav
aamreameklkrdgipgldkemtpqmlfrvcgldesmkvdaqaggaaf