Predicted structure (Phyre) of A122R (pectate lyase fold)
Phyre identifies A122R as a pectate lyase fold (active site not identified)
A122R is rich in repeats (beta-sheets)
The beta-helix fold is also found in podovirus tailspikes (which digest polysaccharides)
Image of p22 tail machine - tailspikes exhibit 6-fold symmetry
Beta sheet proteins known to form amyloids
