>3nkvB (B:) observed residues (from ATOM records) eydylfkllligdsgvgksclllrfaddtytesyistigvdfkirtieldgktiklqiwd tagqerfrtitssyyrgahgiivvydvtdqesyanvkqwlqeidryasnvnkllvgnksd lttkkvvdnttakefadslgipfletsaknatnveqafmtmaaeikkrm