Chains and heterogens:
PDB Chain Sequences:
>1pl4A (A:) khslpdlpydygalephinaqimqlhhskhhaayvnnlnvteekyqealakgdvtaqial qpalkfnggghinhsifwtnlspngggepkgelleaikrdfgsfdkfkekltaasvgvqg sgwgwlgfnkerghlqiaacpnqdplqgttglipllgidvwehayflqyknvrpdylkai wnvinwenvterymackk
>1pl4B (B:) khslpdlpydygalephinaqimqlhhskhhaayvnnlnvteekyqealakgdvtaqial qpalkfnggghinhsifwtnlspngggepkgelleaikrdfgsfdkfkekltaasvgvqg sgwgwlgfnkerghlqiaacpnqdplqgttglipllgidvwehayflqyknvrpdylkai wnvinwenvterymackk
>1pl4B (B:) khslpdlpydygalephinaqimqlhhskhhaayvnnlnvteekyqealakgdvtaqial qpalkfnggghinhsifwtnlspngggepkgelleaikrdfgsfdkfkekltaasvgvqg sgwgwlgfnkerghlqiaacpnqdplqgttglipllgidvwehayflqyknvrpdylkai wnvinwenvterymac
>1pl4C (C:) khslpdlpydygalephinaqimqlhhskhhaayvnnlnvteekyqealakgdvtaqial qpalkfnggghinhsifwtnlspngggepkgelleaikrdfgsfdkfkekltaasvgvqg sgwgwlgfnkerghlqiaacpnqdplqgttglipllgidvwehayflqyknvrpdylkai wnvinwenvterymackk
>1pl4C (C:) khslpdlpydygalephinaqimqlhhskhhaayvnnlnvteekyqealakgdvtaqial qpalkfnggghinhsifwtnlspngggepkgelleaikrdfgsfdkfkekltaasvgvqg sgwgwlgfnkerghlqiaacpnqdplqgttglipllgidvwehayflqyknvrpdylkai wnvinwenvterymack
>1pl4D (D:) khslpdlpydygalephinaqimqlhhskhhaayvnnlnvteekyqealakgdvtaqial qpalkfnggghinhsifwtnlspngggepkgelleaikrdfgsfdkfkekltaasvgvqg sgwgwlgfnkerghlqiaacpnqdplqgttglipllgidvwehayflqyknvrpdylkai wnvinwenvterymackk
>1pl4D (D:) khslpdlpydygalephinaqimqlhhskhhaayvnnlnvteekyqealakgdvtaqial qpalkfnggghinhsifwtnlspngggepkgelleaikrdfgsfdkfkekltaasvgvqg sgwgwlgfnkerghlqiaacpnqdplqgttglipllgidvwehayflqyknvrpdylkai wnvinwenvterymack