Velcro-like self-association between identical L-shaped passenger domains of adjacent Escherichia coli Ag43 molecules [26].
The interaction is held by nine hydrogen bonds [N29–T256 (two hydrogen bonds), N60–T256, N60–T237, D79–T237, N96–R200, T97–R200, T98–R200, G115–R200] and a salt bridge between the R59 and E216 side chains. Reproduced from Heras et al. 2014 [26] with permission.