>4x13B (B:) observed residues (from ATOM records)
evlevktgvdsitevecfltpemgdpdehlrgfsksisisdtfesdspnkdmlpcysvar
iplpnlilmweavtlktevigvttlmnvhsngqathdngaakpvqgtsfhffsvggeale
lqgvvfnyrttypdgtifpknatvqsqvmntehkayldknkaypvecwvpdptrnentry
fgtltggenvppvlhitntattvlldefgvgplckgdnlylsavdvcgmftnrsgsqqwr
glsryfkvqlrkrrvk