Chains and heterogens:
PDB Chain Sequences:
>1b4fA (A:) mektrpdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghq kkilnsiqvmraqmnqiqsvev
>1b4fA (A:) pdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghqkkiln siqvmraqmnqiqs
>1b4fB (B:) mektrpdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghq kkilnsiqvmraqmnqiqsvev
>1b4fB (B:) trpdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghqkki lnsiqvmraqmnqiqsv
>1b4fC (C:) mektrpdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghq kkilnsiqvmraqmnqiqsvev
>1b4fC (C:) pdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghqkkiln siqvmraqmnqiqs
>1b4fD (D:) mektrpdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghq kkilnsiqvmraqmnqiqsvev
>1b4fD (D:) rpdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghqkkil nsiqvmraqmnqiqs
>1b4fE (E:) mektrpdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghq kkilnsiqvmraqmnqiqsvev
>1b4fE (E:) pdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghqkkiln siqvmraqmnqiqs
>1b4fF (F:) mektrpdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghq kkilnsiqvmraqmnqiqsvev
>1b4fF (F:) rpdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghqkkil nsiqvmraqmnqiqsve
>1b4fG (G:) mektrpdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghq kkilnsiqvmraqmnqiqsvev
>1b4fG (G:) pdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghqkkiln siqvmraqmnqi
>1b4fH (H:) mektrpdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghq kkilnsiqvmraqmnqiqsvev
>1b4fH (H:) rpdytsfntvdewleaikmgqykesfanagftsfdvvsqmmmedilrvgvtlaghqkkil nsiqvmraqmnqiqsv