Chains and heterogens:
PDB Chain Sequences:
>1cn4A (A:) pdpkfeskaallaargpeellcfterledlvcfweeaasagvgpgqysfsyqledepwkl crlhqaptargavrfwcslptadtssfvplelrvtaasgapryhrvihinevvlldapvg lvarladesghvvlrwlpppetpmtshiryevdvsagqgagsvqrveilegrtecvlsnl rgrtrytfavrarmaepsfggfwsewsepvslltpsd
>1cn4B (B:) dpkfeskaallaargpeellcfterledlvcfweeaasagvgpgqysfsyqledepwklc rlhqaptargavrfwcslptadtssfvplelrvtaasgapryhrvihinevvlldapvgl varladesghvvlrwlpppetpmtshiryevdvsagqgagsvqrveilegrtecvlsnlr grtrytfavrarmaepsfggfwsewsepvslltpsdld
>1cn4C (C:) pprlicdsrvlerylleakeaekittgcaehcslnekitvpdtkvnfyawkrmevgqqav evwqglallseavlrgqallvkssqpweplqlhvdkavsglrslttllralgaqkeaisp pdaasaaplrtitadtfrklfrvysnflrgklklytgeacr
>1cn4C (C:) pprlicdsrvlerylleakeaekittgcaehcslnekitvpdtkvnfyawkrmevgqqav evwqglallseavlrgqallvkssqpweplqlhvdkavsglrslttllralgaqkeaisp pdrtitadtfrklfrvysnflrgklklytgeacr