Part of the ABC transporter Dpp involved in dipeptide transport. Responsible for energy coupling to the transport system. a dipeptide(out) + ATP + H2O = a dipeptide(in) + ADP + H(+) + phosphate The C-terminal iron-sulfur cluster may stabilize the structure of the C-terminal loops and may function in the regulation of the transport process. Contains an N-terminal conserved nucleotide-binding domain and a C-terminal domain bound with a [4Fe-4S] cluster. The C-terminal domain forms a stable loop region and interacts with the N-terminal domain. Belongs to the ABC transporter superfamily.