[Establishment of bacteria display technology for Fab antibody library screening].

Aim: To establish bacterial display technology for the purpose of Fab antibody library screening, by using six amino acids (CDQSSS) of the amino termimus of NlpA protein to anchore antibodies to the periplasmic side of the bacterial inner membrane.

Methods: The NlpA Leader sequences (encoding CDQSSS) was amplified from pNAD plasmid. The PCR product was subcloned into pComb3 expression vector to generate Fab display vector pBFD.