>2q4sA (A:) observed residues (from ATOM records) ellkprtladlirilhelfagdevnveevqavleayesnpaewalyakfdqyrytrnlvd qgngkfnlmilcwgeghgssihdhtdshcflkllqgnlketlfdwpdkksnemikksert lrenqcayindsiglhrvenvshtepavslhlysppfdtchafdqrtghknkvtmtfhsk fgirtp