Offset PbINP dimerization about the surface of P. borealis. PbINP monomers are shown as individual tubes, with the highly repetitive central domains coloured light blue and the non-repetitive N termini coloured grey. The N terminus of the first PbINP chain of one multimer is indicated, as is the C terminus of the last PbINP chain of the same multimer. To increase active surface area, individual PbINP chains could add to the exposed sections near the two termini.
Garnham et al. BMC Structural Biology 2011 11:36 doi:10.1186/1472-6807-11-36