The ribbon representation of the folded structure of the
polygalacturonase inhibiting protein 1 (
PGIP1) in comparison to
PGIP2). A: PvPGIP2 structure, and B: MdPGIP1 structure. PGIPs have evolved a wide interacting surface within the concave face of the LRR domain that is subject to evolutionary pressure for diversification [2,31,33].