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. 2011 Nov 15;31(2):391–402. doi: 10.1038/emboj.2011.411

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Interfacing residues are conserved within homologous Pex4p and Pex22p sequences. (A) View of the Pex4^15–183 (surface representation) Pex22^S complex (cartoon), indicating the region of Pex22^S (shown in red and labelled) that forms the interface with Pex4^15–183. (B) Surface representation of the Pex22^S binding site in Pex4^15–183, showing residues involved in interface formation which are invariant (blue), partially conserved (cyan) or not-conserved (grey) within homologous Pex4p sequences. (C) Mode of binding of Pex4^15–183 (cartoon) to Pex22^S (surface representation) indicating the interface forming helices α3 and α4 in Pex4^15–183 (blue). (D) Surface conservation within the Pex4^15–183 binding site in homologous Pex22p sequences, indicating residues which are invariant (blue), partially conserved (cyan) or not-conserved (grey).