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. Author manuscript; available in PMC: 2015 Apr 8.
Published in final edited form as: Structure. 2014 Mar 13;22(4):539–548. doi: 10.1016/j.str.2014.02.006

FIGURE 7. Model for PhuZ assembly.

FIGURE 7

GTP-bound PhuZ is in green and GDP-bound is in purple. PhuZ monomers as seen in the crystal (3ZBP) (Aylett et al., 2013) assemble dimers with a tense longitudinal interface as in the crystal structure (3ZBQ) (Aylett et al., 2013) or the relaxed interface as in the crystal structure (3r4v) (Kraemer et al., 2012). Three dimers form a hexameric nucleus with subunits displaying the intramolecular contacts as seen in the pseudo-atomic model described in this work. The nucleus grows by the addition of dimers and monomers. GTP is hydrolyzed soon after filament assembly.