Structural alignment of the of A. thaliana HAE-IDA-SERK1 crystal complex (PDBid:5iyx) and the E. guineensis HSL2-IDA-SERK1 model complex. (a) Overall alignment of the two structures in cartoon and surface representation, with IDA shown as sticks. (b) Alignment of the hydrogen bonding network in the HAE/HSL2-SERK1 core interface and (c) in the HAE/HSL2-IDA-SERK1 interface in both complexes. Central amino acids, as well as the IDA peptides, are shown as sticks and colored by atom type. Water molecules are shown as red spheres. Hydrogen bonds are depicted as dotted lines (yellow). Residues involved in hydrogen bonding are depicted in colors according to the respective structures, as specified in (a). All structure figures were prepared using PyMOL (Schrödinger, LLC).