>4xbgL (L:) observed residues (from ATOM records)
eivltqspgtqslspgeratlscrasqsvgnnklawyqqrpgqaprlliygassrpsgva
drfsgsgsgtdftltisrlepedfavyycqqygqslstfgqgtkvevkrtvaapsvfifp
psdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstyslsstl
tlskadyekhkvyacevthqglsspvtksfnrge