Chains and heterogens:
PDB Chain Sequences:
>1vkvA (A:) mtspshasdrgggdgdsvenqspelrkdpvtnrwvifspxxxxxxxxxxxxxxxxxxxxx xscpfcigreqecapelfrvpdhdpnwklrvienlypalsrnletqstqpetgtsrtivg fgfhdvviespvhsiqlsdidpvgigdiliaykkrinqiaqhdsinyiqvfknqgasaga smshshsqmmalpvvpptvssrldgtkdyfeetgkcclceakskhfvidesshfvsvapf aatypfeiwiipkdhsshfhhlddvkavdlggllklmlqkiakqlndppynymihtsplk vtesqlpythwflqivpqlsgvggfeigtgcyinpvfpedvakvmrevslt
>1vkvA (A:) pelrkdpvtnrwvifspxxxxxxscpfcigreqecapelfrvpdhdpnwklrvienlypa lsrnletrtivgfgfhdvviespvhsiqlsdidpvgigdiliaykkrinqiaqhdsinyi qvfknqgasagasmshshsqmmalpvvpptvssrldgtkdyfeetgkcclceakskhfvi desshfvsvapfaatypfeiwiipkdhsshfhhlddvkavdlggllklmlqkiakqlndp pynymihtsplkvtesqlpythwflqivpqlsgvggfeigtgcyinpvfpedvakvmrev slt
>1vkvB (B:) mtspshasdrgggdgdsvenqspelrkdpvtnrwvifspxxxxxxxxxxxxxxxxxxxxx xscpfcigreqecapelfrvpdhdpnwklrvienlypalsrnletqstqpetgtsrtivg fgfhdvviespvhsiqlsdidpvgigdiliaykkrinqiaqhdsinyiqvfknqgasaga smshshsqmmalpvvpptvssrldgtkdyfeetgkcclceakskhfvidesshfvsvapf aatypfeiwiipkdhsshfhhlddvkavdlggllklmlqkiakqlndppynymihtsplk vtesqlpythwflqivpqlsgvggfeigtgcyinpvfpedvakvmrevslt
>1vkvB (B:) spelrkdpvtnrwvifspxxxxxscpfcicapelfrvpdhdpnwklrvienlypalsrnl etrtivgfgfhdvviespvhsiqlsdidpvgigdiliaykkrinqiaqhdsinyiqvfkn qgasagasmshshsqmmalpvvpptvssrldgtkdyfeetgkcclceakskhfvidessh fvsvapfaatypfeiwiipkdhsshfhhlddvkavdlggllklmlqkiakqlndppynym ihtsplkvtesqlpythwflqivpqlsgvggfeigtgcyinpvfpedvakvmrevsl