“…OmpA can act as a porin for uptake of small molecules (Pautsch and Schulz, 1998; Arora et al, 2000), as a receptor for bacteriophage and colicin (Foulds and Barrett, 1973; Morona et al, 1984), and also as a structural protein to maintain the integrity of the outer membrane (Sonntag et al, 1978; Koebnik, 1995). It has also been reported to be an important target for immune response, a contributing factor to the pathogenicity of E. coli (Weiser and Gotschlich, 1991; Prasadarao et al, 1996; Belaaouaj et al, 2000; Wang, 2002; Godefroy et al, 2003; Jeannin et al, 2003), and a critical component of biofilm formation (Danese et al, 2000; Orme et al, 2006; Rivas et al, 2008). …”