Chains and heterogens:
PDB Chain Sequences:
>1md4A (A:) ppytvvyfpvrgrcaalrmlladqgqswkeevvtvetwqegslkasclygqlpkfqdgdl tlyqsntilrhlgrtlglygkdqqeaalvdmvndgvedlrckyisliytnyeagkddyvk alpgqlkpfetllsqnqggktfivvdqisfadynlldlllihevlapgcldafpllsayv grlsarpklkaflaspeyvnlpingngkq
>1md4A (A:) pytvvyfpvrgrcaalrmlladqgqswkeevvtvetwqegslkasclygqlpkfqdgdlt lyqsntilrhlgrtlglygkdqqeaalvdmvndgvedlrckyisliytnyeagkddyvka lpgqlkpfetllsqnqggktfivvdqisfadynlldlllihevlapgcldafpllsayvg rlsarpklkaflaspeyvnlpingngkq
>1md4B (B:) ppytvvyfpvrgrcaalrmlladqgqswkeevvtvetwqegslkasclygqlpkfqdgdl tlyqsntilrhlgrtlglygkdqqeaalvdmvndgvedlrckyisliytnyeagkddyvk alpgqlkpfetllsqnqggktfivvdqisfadynlldlllihevlapgcldafpllsayv grlsarpklkaflaspeyvnlpingngkq
>1md4B (B:) pytvvyfpvrgrcaalrmlladqgqswkeevvtvetwqegslkasclygqlpkfqdgdlt lyqsntilrhlgrtlglygkdqqeaalvdmvndgvedlrckyisliytnyeagkddyvka lpgqlkpfetllsqnqggktfivvdqisfadynlldlllihevlapgcldafpllsayvg rlsarpklkaflaspeyvnlpingngkq