>4kxzM (M:) observed residues (from ATOM records)
etvltqspgtlslspgeratlscrasqslgssylawyqqkpgqaprlliygassrapgip
drfsgsgsgtdftltisrlepedfavyycqqyadspitfgqgtrleikrtvaapsvfifp
psdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstyslsstl
tlskadyekhkvyacevthqglsspvtksfnrg