Figure 7.
Figure 7 Assembly and opening of the PCNA123 ring. (a) PCNA12
dimer and PCNA3 monomer approaching each other during ring
assembly. (b) The ring of the PCNA123 trimer. (c) PCNA12 dimer
with PCNA3 modeled in contact with PCNA2 with an angle of
120° as in the trimer. A gap (6-7 Å) remains in the
ring-shaped molecule as the angle between PCNA1 and PCNA2 is
130° instead of 120°.
The above figure is reprinted
by permission from the IUCr:
Acta Crystallogr D Biol Crystallogr
(2008,
64,
941-949)
copyright 2008.
