>5o74B (B:) observed residues (from ATOM records)
eydylfkllligdsgvgksclllrfaddtytesyistigvdfkirtieldgktiklqiwd
tagqerfrtitssyyxgahgiivvydvtdqesyanvkqwlqeidryasenvnkllvgnks
dlttkkvvdnttakefadslgipfletsaknatnveqafmtmaaeikkrm