Chains and heterogens:
PDB Chain Sequences:
>1i7rA (A:) gshsmryfftsvsrpgrgeprfiavgyvddtqfvrfdsdaasqrmeprapwieqegpeyw dgetrkvkahsqthrvdlgtlrgyynqseagshtvqrmygcdvgsdwrflrgyhqyaydg kdyialkedlrswtaadmaaqttkhkweaahvaeqlraylegtcvewlrrylengketlq rtdapkthmthhavsdheatlrcwalsfypaeitltwqrdgedqtqdtelvetrpagdgt fqkwaavvvpsgqeqrytchvqheglpkpltlrwe
>1i7rB (B:) miqrtpkiqvysrhpaengksnflncyvsgfhpsdievdllkngeriekvehsdlsfskd wsfyllyyteftptekdeyacrvnhvtlsqpkivkwdrdm
>1i7rD (D:) gshsmryfftsvsrpgrgeprfiavgyvddtqfvrfdsdaasqrmeprapwieqegpeyw dgetrkvkahsqthrvdlgtlrgyynqseagshtvqrmygcdvgsdwrflrgyhqyaydg kdyialkedlrswtaadmaaqttkhkweaahvaeqlraylegtcvewlrrylengketlq rtdapkthmthhavsdheatlrcwalsfypaeitltwqrdgedqtqdtelvetrpagdgt fqkwaavvvpsgqeqrytchvqheglpkpltlrwe
>1i7rE (E:) miqrtpkiqvysrhpaengksnflncyvsgfhpsdievdllkngeriekvehsdlsfskd wsfyllyyteftptekdeyacrvnhvtlsqpkivkwdrdm