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. Author manuscript; available in PMC: 2013 Jul 15.
Published in final edited form as: Subcell Biochem. 2012;62:259–279. doi: 10.1007/978-94-007-4572-8_14

Table 14.1.

Three component subunit structures of replicases from diverse organisms

Organism Polymerase Clamp loader pentamer Sliding clamp
E. coli Pol III
(γ~∕τ)3δδ′
 β dimer
T4 phage gp43 gp44/62 pentamer gp45 trimer
Archaea Pol B RFC pentamer PCNA trimer
Eukaryotes Pol δ, Pol ε RFC pentamer PCNA trimer