Chains and heterogens:
PDB Chain Sequences:
>1mxgA (A:) akyleleeggvimqafywdvpgggiwwdhirskipewyeagisaiwlpppskgmsggysm gydpydyfdlgeyyqkgtvetrfgskeelvrliqtahaygikviadvvinhraggdlewn pfvgdytwtdfskvasgkytanyldfhpnelhccdegtfggfpdichhkewdqywlwksn esyaaylrsigfdgwrfdyvkgygawvvrdwlnwwggwavgeywdtnvdallswayesga kvfdfplyykmdeafdnnnipalvyalqngqtvvsrdpfkavtfvanhdtdiiwnkypay afiltyegqpvifyrdfeewlnkdklinliwihdhlaggsttivyydndelifvrngdsr rpglityinlspnwvgrwvyvpkfagaciheytgnlggwvdkrvdssgwvyleapphdpa ngyygysvwsycgvg