Chains and heterogens:
PDB Chain Sequences:
>1kfwA (A:) pltstvngyrnvgyfaqwgvygrafqakqldvsgtaknlthinysfgninnqtltcfman kaqgtgpngsdgagdawadfgmgyaadksvsgkadtwdqplagsfnqlkqlkaknpklkv mislggwtwsknfskaaateasrqklvsscidlyikgnlpnfegrggagaaagifdgidi dwewpgtnsglagngvdtvndranfkallaefrkqldaygstnnkkyvlsaflpanpadi daggwddpanfksldfgsiqgydlhgawnptltghqanlyddpadprapskkfsadkavk kylaagidpkqlglglaaygrgwtgaknvspwgpatdgapgtyetanedydklktlgtdh ydaatgsawrydgtqwwsydniattkqktdyivskglgggmwwelsgdrngelvgamsdk fraaapgpvteaapp