MSEFRVPALRIRQGEKRQLFSLAIEGKQINKIAAISRIRRGDENLVGYQRPEVRSHIKEIQRYIESSNPMIPNPVIIAFDQRVRFEPLMENSDMGHLVIPYSEDANFEKPGFIVDGQQRTAALREADINSFMMPVSAFIANDAEEQREQFMLVNSTKPLPKTLLYELAPHTHGRLPSDLQLRKFPSLLTQRLNFGEGPLAGRIKTATNPDGVIADNSMIKMIDSSLREGALYRFRDPATGLGDEAKMVKLLNNFWSAVETVFTDDWDKKPRNSRLLHGVGILALGSLMDEIDQVHQDYKGEPGWTEIPSYTRFVEELHRIKPLCAWSSGVWNLGTDIDGQPIVRKWNEVQNLSKDISLVTDYLVTNYIKTANADIEGRAAALEHHHHHH
DpdB is a DNA binding ATPase. The exact function is unknown, but DpdB, ATP hydrolysis and DpdA are all required for preQ0 incorporation into DNA. The protein construct used for SAXS contains a C-terminal polyhistidine tag.