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Publication Abstract from PubMed

Proliferating cell nuclear antigen (PCNA) plays essential roles in DNA replication, DNA repair, cell-cycle regulation and chromatin metabolism. The PCNA from Drosophila melanogaster (DmPCNA) was purified and crystallized. The crystal of DmPCNA diffracted to 2.0 A resolution and belonged to space group H3, with unit-cell parameters a = b = 151.16, c = 38.28 A. The structure of DmPCNA was determined by molecular replacement. DmPCNA forms a symmetric homotrimer in a head-to-tail manner. An interdomain connector loop (IDCL) links the N- and C-terminal domains. Additionally, the N-terminal and C-terminal domains contact each other through hydrophobic associations. Compared with human PCNA, the IDCL of DmPCNA has conformational changes, which may explain their difference in function. This work provides a structural basis for further functional and evolutionary studies of PCNA.

Structure of PCNA from Drosophila melanogaster.,Wang K, Shi Z, Zhang M, Cheng D Acta Crystallogr Sect F Struct Biol Cryst Commun. 2013 Apr 1;69(Pt 4):387-92., doi: 10.1107/S1744309113004971. Epub 2013 Mar 28. PMID:23545643^[1]

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