Chains and heterogens:
PDB Chain Sequences:
>1i7uA (A:) gshsmryfftsvsrpgrgeprfiavgyvddtqfvrfdsdaasqrmeprapwieqegpeyw dgetrkvkahsqthrvdlgtlrgyynqseagshtvqrmygcdvgsdwrflrgyhqyaydg kdyialkedlrswtaadmaaqttkhkweaahvaeqlraylegtcvewlrrylengketlq rtdapkthmthhavsdheatlrcwalsfypaeitltwqrdgedqtqdtelvetrpagdgt fqkwaavvvpsgqeqrytchvqheglpkpltlrwe
>1i7uB (B:) miqrtpkiqvysrhpaengksnflncyvsgfhpsdievdllkngeriekvehsdlsfskd wsfyllyyteftptekdeyacrvnhvtlsqpkivkwdrdm
>1i7uD (D:) gshsmryfftsvsrpgrgeprfiavgyvddtqfvrfdsdaasqrmeprapwieqegpeyw dgetrkvkahsqthrvdlgtlrgyynqseagshtvqrmygcdvgsdwrflrgyhqyaydg kdyialkedlrswtaadmaaqttkhkweaahvaeqlraylegtcvewlrrylengketlq rtdapkthmthhavsdheatlrcwalsfypaeitltwqrdgedqtqdtelvetrpagdgt fqkwaavvvpsgqeqrytchvqheglpkpltlrwe
>1i7uE (E:) miqrtpkiqvysrhpaengksnflncyvsgfhpsdievdllkngeriekvehsdlsfskd wsfyllyyteftptekdeyacrvnhvtlsqpkivkwdrdm