Figure 6. c'' trace of the tetrameric complex between N9 neuraminidase (yellow) and the 4 NC41 Fabs (heavy chains
ed, light chains blue and CDRs green) with the 4-fold axis approximately vertical. An asymmetric unit contains only
one fo&th of the tetramer.
The above figure is reprinted
by permission from Elsevier:
J Mol Biol