Chains and heterogens:
PDB Chain Sequences:
>1kfiA (A:) qvipaprvqvtqpyagqkpgtsglrkkvseatqpnylenfvqsifntlrkdelkpknvlf vggdgryfnrqaifsiirlayandisevhvgqaglmstpasshyirkvneevgnciggii ltashnpggkehgdfgikfnvrtgapapedftdqiythttkikeyltvdyefekhinldq igvykfegtrlekshfevkvvdtvqdytqlmqklfdfdllkglfsnkdfsfrfdgmhgva gpyakhifgtllgcskesllncdpsedfggghpdpnltyahdlvelldihkkkdvgtvpq fgaacdgdadrnmilgrqffvtpsdslaviaananlifkngllgaarsmptsgaldkvaa kngiklfetptgwkffgnlmdaglinlcgeesfgtgsnhirekdgiwavlawltilahkn kntdhfvtveeivtqywqqfgrnyysrydyeqvdsagankmmehlktkfqyfeqlkqgnk adiydyvdpvdqsvsknqgvrfvfgdgsriifrlsgtgsvgatiriyfeqfeqqqiqhet atalaniiklgleisdiaqftgrneptvit
>1kfiB (B:) qvipaprvqvtqpyagqkpgtsglrkkvseatqpnylenfvqsifntlrkdelkpknvlf vggdgryfnrqaifsiirlayandisevhvgqaglmstpasshyirkvneevgnciggii ltashnpggkehgdfgikfnvrtgapapedftdqiythttkikeyltvdyefekhinldq igvykfegtrlekshfevkvvdtvqdytqlmqklfdfdllkglfsnkdfsfrfdgmhgva gpyakhifgtllgcskesllncdpsedfggghpdpnltyahdlvelldihkkkdvgtvpq fgaacdgdadrnmilgrqffvtpsdslaviaananlifkngllgaarsmptsgaldkvaa kngiklfetptgwkffgnlmdaglinlcgeesfgtgsnhirekdgiwavlawltilahkn kntdhfvtveeivtqywqqfgrnyysrydyeqvdsagankmmehlktkfqyfeqlkqgnk adiydyvdpvdqsvsknqgvrfvfgdgsriifrlsgtgsvgatiriyfeqfeqqqiqhet atalaniiklgleisdiaqftgrneptvit