>4wrlB (B:) observed residues (from ATOM records)
evseycshmigsghlqslqrlidsqmetscqitfefvdqeqlkdpvcylkkafllvqdim
edtmrfrdntpnaiaivqlqelslrlkscftkdykacvrtfyetplqllekvknvfnetk
nlldkdwnifskncnnsfaec