Chains and heterogens:
PDB Chain Sequences:
>1vkiA (A:) mgsdkihhhhhhmtensrktatelfefldglgishttkqhepvftvaesqslrdlipggh tknlfvkdkkdqyfvltveenavvdlksvhktigaasrvsfgrpekmleylgvvpgsvtv fgaindtarqvtfvldsdllenelvnghplsndqtttiaskdlirfleatghaplvlkvs e
>1vkiA (A:) srktatelfefldglgishttkqhepvftvaesqslrdlipgghtknlfvkdkkdqyfvl tveenavvdlksvhktigaasrvsfgrpekmleylgvvpgsvtvfgaindtarqvtfvld sdllenelvnghplsndqtttiaskdlirfleatghaplvlkvse
>1vkiB (B:) mgsdkihhhhhhmtensrktatelfefldglgishttkqhepvftvaesqslrdlipggh tknlfvkdkkdqyfvltveenavvdlksvhktigaasrvsfgrpekmleylgvvpgsvtv fgaindtarqvtfvldsdllenelvnghplsndqtttiaskdlirfleatghaplvlkvs e
>1vkiB (B:) nsrktatelfefldglgishttkqhepvftvaesqslrdlipgghtknlfvkdkkdqyfv ltveenavvdlksvhktigaasrvsfgrpekmleylgvvpgsvtvfgaindtarqvtfvl dsdllenelvnghplsndqtttiaskdlirfleatghaplvlkvse