>1cn4A (A:) observed residues (from ATOM records)
pdpkfeskaallaargpeellcfterledlvcfweeaasagvgpgqysfsyqledepwkl
crlhqaptargavrfwcslptadtssfvplelrvtaasgapryhrvihinevvlldapvg
lvarladesghvvlrwlpppetpmtshiryevdvsagqgagsvqrveilegrtecvlsnl
rgrtrytfavrarmaepsfggfwsewsepvslltpsd