Chains and heterogens:
PDB Chain Sequences:
>1md7A (A:) dcgqprnlpngdfrytttmgvntykariqyychepyykmqtragsreseqgvytctaqgi wkneqkgekiprclpvcgkpvnpveqrqriiggqkakmgnfpwqvftnihgrgggallgd rwiltaahtlypkeheaqsnasldvflghtnveelmklgnhpirrvsvhpdyrqdesynf egdiallelensvtlgpnllpiclpdndtfydlglmgyvsgfgvmeekiahdlrfvrlpv anpqacenwlrgknrmdvfsqnmfcaghpslkqdacqgdaggvfavrdpntdrwvatgiv swgigcsrgygfytkvlnyvdwikkeme
>1md7A (A:) dcgqprnlpngdfrytttmgvntykariqyychepyykmqtqgvytctaqgiwkneqkge kiprclpvcgkpvnpveiiggqkakmgnfpwqvftnihgrgggallgdrwiltaahtlyp keheaqsnasldvflghtnveelmklgnhpirrvsvhpdyrqdesynfegdiallelens vtlgpnllpiclpdndtfydlglmgyvsgfgahdlrfvrlpvanpqacenwldvfsqnmf caghpslkqdacqgdaggvfavrdpntdrwvatgivswgigcsrgygfytkvlnyvdwik keme