Chains and heterogens:
PDB Chain Sequences:
>1xabA (A:) mkvavlpgdgigpevteaalkvlraldeaeglglayevfpfggaaidafgepfpeptrkg veeaeavllgsvggpkwdglprkirpetgllslrksqdlfanlrpakvfpglerlsplke eiargvdvlivreltggiyfgeprgmseaeawnteryskpevervarvafeaarkrrkhv vsvdkanvlevgefwrktveevgrgypdvalehqyvdamamhlvrsparfdvvvtgnifg dilsdlasvlpgslgllpsaslgrgtpvfepvhgsapdiagkgianptaailsaammleh afglvelarkvedavakalletpppdlggsagteaftatvlrhla