Model structure of CaPCNA.
a. Structure of CaPCNA monomer showing N- terminal domain in green, C-terminal domain in purple and IDCL in blue. b. Ring structure of CaPCNA depicting three monomers connecting N-terminal domain with C-terminal domain. c. Superimposed structures of CaPCNA (purple) and ScPCNA (green); and non-overlapping portions of CaPCNA (yellow) and ScPCNA (blue) are shown. d. The Ramachandran plot of the homology-modeled structure of CaPCNA. The red regions indicate “most favored”, yellow colored areas “additional allowed” and white portion represent “disallowed”.