Chains and heterogens:
PDB Chain Sequences:
>4pgtA (A:) mppytvvyfpvrgrcaalrmlladqgqswkeevvtvetwqegslkasclygqlpkfqdgd ltlyqsntilrhlgrtlglygkdqqeaalvdmvndgvedlrckyvsliytnyeagkddyv kalpgqlkpfetllsqnqggktfivgdqisfadynlldlllihevlapgcldafpllsay vgrlsarpklkaflaspeyvnlpingngkq
>4pgtB (B:) mppytvvyfpvrgrcaalrmlladqgqswkeevvtvetwqegslkasclygqlpkfqdgd ltlyqsntilrhlgrtlglygkdqqeaalvdmvndgvedlrckyvsliytnyeagkddyv kalpgqlkpfetllsqnqggktfivgdqisfadynlldlllihevlapgcldafpllsay vgrlsarpklkaflaspeyvnlpingngkq
>4pgtB (B:) ppytvvyfpvrgrcaalrmlladqgqswkeevvtvetwqegslkasclygqlpkfqdgdl tlyqsntilrhlgrtlglygkdqqeaalvdmvndgvedlrckyvsliytnyeagkddyvk alpgqlkpfetllsqnqggktfivgdqisfadynlldlllihevlapgcldafpllsayv grlsarpklkaflaspeyvnlpingngkq