Keywords: بیوگرافی پیلوس; CU; chaperone-usher; Nte; N-terminal extension; DSE; donor-strand exchange; NTD; N-terminal domain; DNA Pol I; DNA polymerase I; dNTP; nucleoside triphosphate; DSC; donor-strand complementation; Pilus biogenesis; Usher; Chaperone; DNA polymerase I; Nano