Figure 2.

Interactions of the SsoPCNA 1 and 2 heterodimer with (a) Fen1 (2IZO) and (b) Dpo4 (3FDS) [9, 10]. The PCNA subunits are coloured light (PCNA1) and dark (PCNA2) blue. The principal PIP-box interaction is indicated, as are other key interacting domains.