>7nlnB (B:) observed residues (from ATOM records)
alpthikaqvlaealpwlkqlhgkvvvvkyggnamtddtlrrafaadmaflrncgihpvv
vhgggpqitamlrrlgiegdfkggfrvttpevldvarmvlfgqvgrelvnlinahgpyav
gitgedaqlftavrrsvtvdgvatdiglvgdvdqvntaamldlvaagripvvstlapdad
gvvhninadtaaaavaealgaekllmltdidglytrwpdrdslvseidtgtlaqllptle
sgmvpkveaclraviggvpsahiidgrvthcvlvelftdagtgtkvvrg