--- _id: '9491' abstract: - lang: eng text: Cytosine DNA methylation in vertebrates is widespread, but methylation in plants is found almost exclusively at transposable elements and repetitive DNA [1]. Within regions of methylation, methylcytosines are typically found in CG, CNG, and asymmetric contexts. CG sites are maintained by a plant homolog of mammalian Dnmt1 acting on hemi-methylated DNA after replication. Methylation of CNG and asymmetric sites appears to be maintained at each cell cycle by other mechanisms. We report a new type of DNA methylation in Arabidopsis, dense CG methylation clusters found at scattered sites throughout the genome. These clusters lack non-CG methylation and are preferentially found in genes, although they are relatively deficient toward the 5′ end. CG methylation clusters are present in lines derived from different accessions and in mutants that eliminate de novo methylation, indicating that CG methylation clusters are stably maintained at specific sites. Because 5-methylcytosine is mutagenic, the appearance of CG methylation clusters over evolutionary time predicts a genome-wide deficiency of CG dinucleotides and an excess of C(A/T)G trinucleotides within transcribed regions. This is exactly what we find, implying that CG methylation clusters have contributed profoundly to plant gene evolution. We suggest that CG methylation clusters silence cryptic promoters that arise sporadically within transcription units. article_processing_charge: No article_type: original author: - first_name: Robert K. full_name: Tran, Robert K. last_name: Tran - first_name: Jorja G. full_name: Henikoff, Jorja G. last_name: Henikoff - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 - first_name: Renata F. full_name: Ditt, Renata F. last_name: Ditt - first_name: Steven E. full_name: Jacobsen, Steven E. last_name: Jacobsen - first_name: Steven full_name: Henikoff, Steven last_name: Henikoff citation: ama: Tran RK, Henikoff JG, Zilberman D, Ditt RF, Jacobsen SE, Henikoff S. DNA methylation profiling identifies CG methylation clusters in Arabidopsis genes. Current Biology. 2005;15(2):154-159. doi:10.1016/j.cub.2005.01.008 apa: Tran, R. K., Henikoff, J. G., Zilberman, D., Ditt, R. F., Jacobsen, S. E., & Henikoff, S. (2005). DNA methylation profiling identifies CG methylation clusters in Arabidopsis genes. Current Biology. Elsevier. https://doi.org/10.1016/j.cub.2005.01.008 chicago: Tran, Robert K., Jorja G. Henikoff, Daniel Zilberman, Renata F. Ditt, Steven E. Jacobsen, and Steven Henikoff. “DNA Methylation Profiling Identifies CG Methylation Clusters in Arabidopsis Genes.” Current Biology. Elsevier, 2005. https://doi.org/10.1016/j.cub.2005.01.008. ieee: R. K. Tran, J. G. Henikoff, D. Zilberman, R. F. Ditt, S. E. Jacobsen, and S. Henikoff, “DNA methylation profiling identifies CG methylation clusters in Arabidopsis genes,” Current Biology, vol. 15, no. 2. Elsevier, pp. 154–159, 2005. ista: Tran RK, Henikoff JG, Zilberman D, Ditt RF, Jacobsen SE, Henikoff S. 2005. DNA methylation profiling identifies CG methylation clusters in Arabidopsis genes. Current Biology. 15(2), 154–159. mla: Tran, Robert K., et al. “DNA Methylation Profiling Identifies CG Methylation Clusters in Arabidopsis Genes.” Current Biology, vol. 15, no. 2, Elsevier, 2005, pp. 154–59, doi:10.1016/j.cub.2005.01.008. short: R.K. Tran, J.G. Henikoff, D. Zilberman, R.F. Ditt, S.E. Jacobsen, S. Henikoff, Current Biology 15 (2005) 154–159. date_created: 2021-06-07T10:24:30Z date_published: 2005-01-26T00:00:00Z date_updated: 2021-12-14T09:12:26Z day: '26' department: - _id: DaZi doi: 10.1016/j.cub.2005.01.008 extern: '1' external_id: pmid: - '15668172 ' intvolume: ' 15' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1016/j.cub.2005.01.008 month: '01' oa: 1 oa_version: Published Version page: 154-159 pmid: 1 publication: Current Biology publication_identifier: eissn: - 1879-0445 issn: - 0960-9822 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: DNA methylation profiling identifies CG methylation clusters in Arabidopsis genes type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 15 year: '2005' ...