Figure 4: Structure of the postsynaptic nucleoprotein filament.
a, Structure of the
RecA–(ADP-AlF-Mg)–(dT)–(dA) complex. The
five RecA protomers are coloured as the first five protomers of
Fig. 1a. The primary (dT) strand (red) has 13 ordered
nucleotides, and the complementary (dA) strand (magenta) has
10 ordered nucleotides. b, View of the heteroduplex looking down
the filament axis, showing the three central base-pair triplets
(of RecA^2, RecA^3 and RecA^4).
The above figure is reprinted
by permission from Macmillan Publishers Ltd: