Chains and heterogens:
PDB Chain Sequences:
>1fwkA (A:) mkvrvkapctsanlgvgfdvfglclkepydvieveaiddkeiiievddkniptdpdknva givakkmiddfnigkgvkitikkgvkagsglgssaassagtayainelfklnldklklvd yasygelassgakhadnvapaifggftmvtnyeplevlhipidfkldiliaipnisintk eareilpkavglkdlvnnvgkacgmvyalynkdkslfgrymmsdkviepvrgklipnyfk ikeevkdkvygitisgsgpsiiafpkeefidevenilrdyyentirtevgkgvevv
>1fwkB (B:) mkvrvkapctsanlgvgfdvfglclkepydvieveaiddkeiiievddkniptdpdknva givakkmiddfnigkgvkitikkgvkagsglgssaassagtayainelfklnldklklvd yasygelassgakhadnvapaifggftmvtnyeplevlhipidfkldiliaipnisintk eareilpkavglkdlvnnvgkacgmvyalynkdkslfgrymmsdkviepvrgklipnyfk ikeevkdkvygitisgsgpsiiafpkeefidevenilrdyyentirtevgkgvevv
>1fwkC (C:) mkvrvkapctsanlgvgfdvfglclkepydvieveaiddkeiiievddkniptdpdknva givakkmiddfnigkgvkitikkgvkagsglgssaassagtayainelfklnldklklvd yasygelassgakhadnvapaifggftmvtnyeplevlhipidfkldiliaipnisintk eareilpkavglkdlvnnvgkacgmvyalynkdkslfgrymmsdkviepvrgklipnyfk ikeevkdkvygitisgsgpsiiafpkeefidevenilrdyyentirtevgkgvevv
>1fwkD (D:) mkvrvkapctsanlgvgfdvfglclkepydvieveaiddkeiiievddkniptdpdknva givakkmiddfnigkgvkitikkgvkagsglgssaassagtayainelfklnldklklvd yasygelassgakhadnvapaifggftmvtnyeplevlhipidfkldiliaipnisintk eareilpkavglkdlvnnvgkacgmvyalynkdkslfgrymmsdkviepvrgklipnyfk ikeevkdkvygitisgsgpsiiafpkeefidevenilrdyyentirtevgkgvevv