Fig. 1From: Outer membrane protein A (OmpA) of extraintestinal pathogenic Escherichia coliStructure of OmpA, represented by the black and blue line looping through the outer membrane, with amino acid sequence polymorphisms indicated at their approximate positions. Polymorphisms 1–18 are within the N terminal domain region while polymorphisms 19–22 are within the linker/dimerization domain. The OmpA structure is based on data presented in other work [10, 21]Back to article page