3p91

Publication Abstract from PubMed

Proliferating cellular nuclear antigen (PCNA) is a toroidal-shaped protein that is involved in cell-cycle control, DNA replication and DNA repair. Parasitic protozoa are early-diverged eukaryotes that are responsible for neglected diseases. In this work, a PCNA from a parasitic protozoon was identified, cloned and biochemically characterized and its crystal structure was determined. Structural and biochemical studies demonstrate that PCNA from Entamoeba histolytica assembles as a homotrimer that is able to interact with and stimulate the activity of a PCNA-interacting peptide-motif protein from E. histolytica, EhDNAligI. The data indicate a conservation of the biochemical mechanisms of PCNA-mediated interactions between metazoa, yeast and parasitic protozoa.

Structure and biochemical characterization of proliferating cellular nuclear antigen from a parasitic protozoon.,Cardona-Felix CS, Lara-Gonzalez S, Brieba LG Acta Crystallogr D Biol Crystallogr. 2011 Jun;67(Pt 6):497-505. Epub 2011 May 12. PMID:21636889^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.