Chains and heterogens:
PDB Chain Sequences:
>1q7fA (A:) gthmksqikrqrmiyhckfgefgvmegqftepsgvavnaqndiivadtnnhriqifdkeg rfkfqfgecgkrdsqllypnrvavvrnsgdiivterspthqiqiynqygqfvrkfgatil qhprgvtvdnkgriivveckvmrviifdqngnvlhkfgcskhlefpngvvvndkqeifis dnrahcvkvfnyegqylrqiggegitnypigvginsngeiliadnhnnfnltiftqdgql isaleskvkhaqcfdvalmddgsvvlaskdyrlyiyryvqlapvgm
>1q7fA (A:) ikrqrmiyhckfgefgvmegqftepsgvavnaqndiivadtnnhriqifdkegrfkfqfg ecgkrdsqllypnrvavvrnsgdiivterspthqiqiynqygqfvrkfgatilqhprgvt vdnkgriivveckvmrviifdqngnvlhkfgcskhlefpngvvvndkqeifisdnrahcv kvfnyegqylrqiggegitnypigvginsngeiliadnhnnfnltiftqdgqlisalesk vkhaqcfdvalmddgsvvlaskdyrlyiyryvqlapvgm
>1q7fB (B:) gthmksqikrqrmiyhckfgefgvmegqftepsgvavnaqndiivadtnnhriqifdkeg rfkfqfgecgkrdsqllypnrvavvrnsgdiivterspthqiqiynqygqfvrkfgatil qhprgvtvdnkgriivveckvmrviifdqngnvlhkfgcskhlefpngvvvndkqeifis dnrahcvkvfnyegqylrqiggegitnypigvginsngeiliadnhnnfnltiftqdgql isaleskvkhaqcfdvalmddgsvvlaskdyrlyiyryvqlapvgm
>1q7fB (B:) ksqikrqrmiyhckfgefgvmegqftepsgvavnaqndiivadtnnhriqifdkegrfkf qfgecgkrdsqllypnrvavvrnsgdiivterspthqiqiynqygqfvrkfgatilqhpr gvtvdnkgriivveckvmrviifdqngnvlhkfgcskhlefpngvvvndkqeifisdnra hcvkvfnyegqylrqiggegitnypigvginsngeiliadnhnnfnltiftqdgqlisal eskvkhaqcfdvalmddgsvvlaskdyrlyiyryvqlapvgm