Chains and heterogens:
PDB Chain Sequences:
>1kfkA (A:) meryenlfaqlndrregafvpfvtlgdpgieqslkiidtlidagadalelgvpfsdplad gptiqnanlrafaagvtpaqcfemlalirekhptipigllmyanlvfnngidafyarceq vgvdsvlvadvpveesapfrqaalrhniapificppnadddllrqvasygrgytyllsrs gvvgaenrgalplhhlieklkeyhaapalqgfgisspeqvsaavragaagaisgsaivki ieknlaspkqmlaelrsfvsamkaasra
>1kfkA (A:) meryenlfaqlndrregafvpfvtlgdpgieqslkiidtlidagadalelgvpfsdplad gptiqnanlrafaagvtpaqcfemlalirekhptipigllmyanlvfnngidafyarceq vgvdsvlvadvpveesapfrqaalrhniapificppnadddllrqvasygrgytyllhhl ieklkeyhaapalqgfgisspeqvsaavragaagaisgsaivkiieknlaspkqmlaelr sfvsamkaasr
>1kfkB (B:) mttllnpyfgefggmyvpqilmpalnqleeafvsaqkdpefqaqfadllknyagrptalt kcqnitagtrttlylkredllhggahktnqvlgqallakrmgkseiiaetgagqhgvasa lasallglkcriymgakdverqspnvfrmrlmgaevipvhsgsatlkdacnealrdwsgs yetahymlgtaagphpyptivrefqrmigeetkaqildkegrlpdaviacvgggsnaigm fadfindtsvgligvepgghgietgehgaplkhgrvgiyfgmkapmmqtadgqieesysi sagldfpsvgpqhaylnsigradyvsitddealeafktlcrhegiipalesshalahalk mmreqpekeqllvvnlsgrgdkdiftvhdilkargei
>1kfkB (B:) ttllnpyfgefggmyvpqilmpalnqleeafvsaqkdpefqaqfadllknyagrptaltk cqnitagtrttlylkredllhggahktnqvlgqallakrmgkseiiaetgagqhgvasal asallglkcriymgakdverqspnvfrmrlmgaevipvhsgsatlkdacnealrdwsgsy etahymlgtaagphpyptivrefqrmigeetkaqildkegrlpdaviacvgggsnaigmf adfindtsvgligvepgghgietgehgaplkhgrvgiyfgmkapmmqtadgqieesysis agldfpsvgpqhaylnsigradyvsitddealeafktlcrhegiipalesshalahalkm mreqpekeqllvvnlsgrgdkdiftvhdilka