>3bb2A (A:) observed residues (from ATOM records) hhhhfnlppgnykkpkllycsngghflridpngtvdgtrdrsdqhiqlqlsaesvgevyi kstetgqylamdtdgllygsqtpneeclflerleenhyntyiskkhaeknwfvglkkngs ckrgprthygqkailflplpv