>4xceD (D:) observed residues (from ATOM records)
eivltqspgtqslspgeratlscrasqsvgnnklawyqqrpgqaprlliygassrpsgva
drfsgsgsgtdftltisrlepedfavyycqqygqslstfgqgtkvevkrtvaapsvfifp
psdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstyslsstl
tlskadyekhkvyacevthqglsspvtksfnrge