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. 2013 Oct 3;8(10):e76416. doi: 10.1371/journal.pone.0076416

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© 2013 Umegaki-Arao et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Proteins that interact with KPNA2 in the cytoplasm and nucleus were purified using the TAP method and detected by silver staining. Proteins marked with arrows were analyzed by LC/MS/MS. HaCaT cells expressing GFP-TAP were used to detect nonspecific interactions. a) The results of LC/MS/MS were analyzed by pathway analysis using reactome (http://www.reactome.org). The categories of “mRNA processing”, “ribonucleoprotein complex biogenesis”, “chromatin modification,” and “transcription” were the most significantly represented pathways. b) Immunohistochemistry revealed KPNA2 co-localization with UBF, a nucleolar marker.