>2qexN (N:) observed residues (from ATOM records)
atgprykvpmrrrreartdyhqrlrllksgkprlvarksnkhvraqlvtlgpngddtlas
ahssdlaeygweaptgnmpsayltgllaglraqeagveeavldiglnsptpgskvfaiqe
gaidagldiphnddvladwqrtrgahiaeydeqleeplysgdfdaadlpehfdelretll
dgdiel