>5xz0B (B:) observed residues (from ATOM records)
sqpdpkpdelhksskftglmeamkvlyddnhvsainvksidqflyfdliysikdtklgny
dnvrvefknkdladkykdkyvdvfganyayqcydkaktcmyggvtehngnqldkyrsitv
rvfedgknllsfdvqtnkkkvtaqeldyltrhylvknkklyeannspyetgyikfienen
sfwydmmpapgdkfdqskylmmyndnkmvdskdvkievyltt