5y26 is a 2 chain structure with sequence from Schizosaccharomyces pombe 972h-. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
↑ Spiga MG, D'Urso G. Identification and cloning of two putative subunits of DNA polymerase epsilon in fission yeast. Nucleic Acids Res. 2004 Sep 23;32(16):4945-53. doi: 10.1093/nar/gkh811. Print, 2004. PMID:15388803 doi:http://dx.doi.org/10.1093/nar/gkh811