Chains and heterogens:
PDB Chain Sequences:
>1nv4A (A:) tdqaafdtnivtltrfvmeegrkargtgemtqllnslctavkaistavrkagiahlygia gstnvtgdqvkkldvlsndlvinvlkssfatcvlvseedknaiivepekrgkyvvcfdpl dgssnidclvsigtifgiyrknstdepsekdalqpgrnlvaagyalygsatmlvlamvng vncfmldpaigefilvdrdvkikkkgsiysinegyakefdpaiteyiqrkkfppdnsapy garyvgsmvadvhrtlvyggifmypankkspkgklrllyecnpmayvmekagglattgke avldivptdihqrapiilgspedvtelleiyqkhaak
>1nv4A (A:) dtnivtltrfvmeegrkargtgemtqllnslctavkaistavrkagiahlygiagstnvt gdqvkkldvlsndlvinvlkssfatcvlvseedknaiivepekrgkyvvcfdpldgssni dclvsigtifgiyrknstdepsekdalqpgrnlvaagyalygsatmlvlamvngvncfml dpaigefilvdrdvkikkkgsiysinegyakefdpaiteyiqrkkfppdnsapygaryvg smvadvhrtlvyggifmypankkspkgklrllyecnpmayvmekagglattgkeavldiv ptdihqrapiilgspedvtelleiyqkha