Figure 2 - full size

Figure 2.
Figure 2 The ICAM-2 tail peptide recognition by the radixin FERM domain. (A) Surface electrostatic potentials of the radixin FERM domain viewed from the same direction as in Figure 1A. Positive (blue, +14 kT/e) and negative (red, -14 kT/e) potentials are mapped on the van der Waals surfaces. The ICAM-2 peptide found in the complex crystal is shown in a stick model. The disordered C-terminal basic region is indicated by an arrow of dotted lines. (B) The ICAM-2 binding groove on subdomain C is formed primarily by hydrophobic residues from helix 1C and strand 5C. The bound ICAM-2 peptide is shown in a transparency ribbon model. (C) Schematic representation of the interactions between the ICAM-2 peptide (blue) and subdomain C (brown). Hydrogen bonds are shown by broken lines. (D) The ICAM-2 peptide found in the FERM -ICAM-2 complex is shown in a stick model (light blue) with their interacting residues from subdomain C (brown). Hydrogen bonds are shown by dotted lines. (E) A close-up view of the hydrophobic and hydrogen bonding interactions between the ICAM-2 peptide and the FERM domain mediated by His288 from subdomain C.