Chains and heterogens:
PDB Chain Sequences:
>1pn3A (A:) mrvlitgcgsrgdteplvalaarlrelgadarmclppdyvercaevgvpmvpvgravrag arepgelppgaaevvtevvaewfdkvpaaiegcdavvttgllpaavavrsmaeklgipyr ytvlspdhlpseqsqaerdmynqgadrlfgdavnshrasiglppvehlydygytdqpwla adpvlsplrptdlgtvqtgawilpderplsaeleaflaagstpvyvgfgsssrpatadaa kmaikavrasgrrivlsrgwadlvlpddgadcfvvgevnlqelfgrvaaaihhdsagttl lamragipqivvrrvvdnvveqayhadrvaelgvgvavdgpvptidslsaaldtalapei rarattvadtiradgttvaaqllfdavslekptvpalehhhhhh
>1pn3A (A:) mrvlitgcgsrgdteplvalaarlrelgadarmclppdyvercaevgvpmvpvgravrag arepgelppgaaevvtevvaewfdkvpaaiegcdavvttgllpaavavrsmaeklgipyr ytvlspdhlpseqsqaerdmynqgadrlfgdavnshrasiglppvehlydygytdqpwla adpvlsplrptdlgtvqtgawilpderplsaeleaflaagstpvyvgfgsssrpatadaa kmaikavrasgrrivlsrgwadlvlpddgadcfvvgevnlqelfgrvaaaihhdsagttl lamragipqivvrrvvdnvveqayhadrvaelgvgvavdgpvptidslsaaldtalapei rarattvadtiradgttvaaqllfdavslek
>1pn3B (B:) mrvlitgcgsrgdteplvalaarlrelgadarmclppdyvercaevgvpmvpvgravrag arepgelppgaaevvtevvaewfdkvpaaiegcdavvttgllpaavavrsmaeklgipyr ytvlspdhlpseqsqaerdmynqgadrlfgdavnshrasiglppvehlydygytdqpwla adpvlsplrptdlgtvqtgawilpderplsaeleaflaagstpvyvgfgsssrpatadaa kmaikavrasgrrivlsrgwadlvlpddgadcfvvgevnlqelfgrvaaaihhdsagttl lamragipqivvrrvvdnvveqayhadrvaelgvgvavdgpvptidslsaaldtalapei rarattvadtiradgttvaaqllfdavslekptvpalehhhhhh
>1pn3B (B:) mrvlitgcgsrgdteplvalaarlrelgadarmclppdyvercaevgvpmvpvgravrag arepgelppgaaevvtevvaewfdkvpaaiegcdavvttgllpaavavrsmaeklgipyr ytvlspdhlpseqsqaerdmynqgadrlfgdavnshrasiglppvehlydygytdqpwla adpvlsplrptdlgtvqtgawilpderplsaeleaflaagstpvyvgfgsssrpatadaa kmaikavrasgrrivlsrgwadlvlpddgadcfvvgevnlqelfgrvaaaihhdsagttl lamragipqivvrrvayhadrvaelgvgvavdgpvptidslsaaldtalapeirarattv adtiradgttvaaqllfdavslek