>1cn4B (B:) observed residues (from ATOM records)
dpkfeskaallaargpeellcfterledlvcfweeaasagvgpgqysfsyqledepwklc
rlhqaptargavrfwcslptadtssfvplelrvtaasgapryhrvihinevvlldapvgl
varladesghvvlrwlpppetpmtshiryevdvsagqgagsvqrveilegrtecvlsnlr
grtrytfavrarmaepsfggfwsewsepvslltpsdld