>2qa4N (N:) observed residues (from ATOM records)
atgprykvpmrrrreartdyhqrlrllksgkprlvarksnkhvraqlvtlgpngddtlas
ahssdlaeygweaptgnmpsayltgllaglraqeagveeavldiglnsptpgskvfaiqe
gaidagldiphnddvladwqrtrgahiaeydeqleeplysgdfdaadlpehfdelretll
dgdiel