Chains and heterogens:
PDB Chain Sequences:
>1qrdA (A:) avrralivlahaertsfnyamkeaavealkkkgwevvesdlyamnfnplisrnditgepk dsenfqypvesslaykegrlspdivaeqkkleaadlvifqfplywfgvpailkgwfervl vagfaytyatmydkgpfqnkktllsittggsgsmyslqgvhgdmnvilwpiqsgilrfcg fqvlepqlvysightppdarvqvlegwkkrletvweesplyfapsslfdlnfqagfllkk evqeeqkknkfglsvghhlgksipadnqikark
>1qrdB (B:) avrralivlahaertsfnyamkeaavealkkkgwevvesdlyamnfnplisrnditgepk dsenfqypvesslaykegrlspdivaeqkkleaadlvifqfplywfgvpailkgwfervl vagfaytyatmydkgpfqnkktllsittggsgsmyslqgvhgdmnvilwpiqsgilrfcg fqvlepqlvysightppdarvqvlegwkkrletvweesplyfapsslfdlnfqagfllkk evqeeqkknkfglsvghhlgksipadnqikark