>3r50E (E:) observed residues (from ATOM records)
qlaahsdarsgpvgsnggqfwsfrpvrplnkivlsfsgspdqtlnlisitfssnptdiit
vggvgpepltytetvnidgdiieisgmianykgynvirsikfttnkkeygpyganagtpf
nikipdgnkivgffgnsgwyvdaigayytak