Ariadne Genomics Inc. Rpa complex Pcna pold complex ATP Rfc complex Msh members Mlh members Pms members Exo1 ---- Pcna Msh members ---- Pcna Mlh members ---- Pcna Pcna ---- pold complex Exo1 ---- Mlh members Exo1 ---- Msh members Lig1 ---- Pcna Pcna ---- Rfc complex Exo1 excised base Lig1