Chains and heterogens:
PDB Chain Sequences:
>3zizA (A:) mgflpqaqgggaaasakvsgtrfvidgktgyfagtnsywigfltnnrdvdttldhiassg lkilrvwgfndvnnqpsgntvwfqrlassgsqintgpnglqrldylvrsaetrgikliia lvnywddfggmkayvnafggtkeswytnaraqeqykryiqavvsryvnspaifawelane prckgcntnvifnwatqisdyirsldkdhlitlgdegfglpgqttypyqygegtdfvknl qiknldfgtfhmypghwgvptsfgpgwikdhaaacraagkpclleeygyesdrcnvqkgw qqasrelsrdgmsgdlfwqwgdqlstgqthndgftiyygsslatclvtdhvrainalpag deqkliseedlnsavdhhhhhh
>3zizA (A:) sakvsgtrfvidgktgyfagtnsywigfltnnrdvdttldhiassglkilrvwgfndvnn qpsgntvwfqrlassgsqintgpnglqrldylvrsaetrgikliialvnywddfggmkay vnafggtkeswytnaraqeqykryiqavvsryvnspaifawelaneprckgcntnvifnw atqisdyirsldkdhlitlgdegfglpgqttypyqygegtdfvknlqiknldfgtfhmyp ghwgvptsfgpgwikdhaaacraagkpclleeygyesdrcnvqkgwqqasrelsrdgmsg dlfwqwgdqlstgqthndgftiyygsslatclvtdhvrainalpa