title: Identification of chromatin marks at TERRA promoter and encoding region.
abstract: TERRA is a long non-coding RNA that is essential for telomere integrity. Although it is transcribed from subtelomeres and telomeres, how it is expressed in heterochromatic region is currently unknown. In this study, we focused our analysis on TERRA-encoding region TelBam3.4 and TelBam3.4-like sequences, and determined their transcription start sites, as well as enrichment of RNA polymerase II and histone modifications. We found that H3K4me3 and H3K9me3 are present at TERRA promoters, whereas H3K27ac and H3K9me3 are present at telomeric repeats. Consistently, we show that presence of active histone modifications H3K4me3 and H3K27ac are correlated to TERRA expression. These results mark an important step towards understanding telomere maintenance and transcription.
authors.affiliation: Division of Genomic Technologies, Center for Life Science Technologies, RIKEN, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan; Department of Medical Life Science, Yokohama City University, 1-7-29 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan. Electronic address: yutaka.negishi@riken.jp.
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Negishi
authors.affiliation: Division of Genomic Technologies, Center for Life Science Technologies, RIKEN, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan; Department of Medical Life Science, Yokohama City University, 1-7-29 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan; Preventive Medicine and Diagnosis Innovation Program, RIKEN, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan. Electronic address: hideya.kawaji@riken.jp.
authors.forename: Hideya
authors.initials: H
authors.lastname: Kawaji
authors.affiliation: Division of Genomic Technologies, Center for Life Science Technologies, RIKEN, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan. Electronic address: akiko.minoda@riken.jp.
authors.forename: Aki
authors.initials: A
authors.lastname: Minoda
authors.affiliation: Division of Genomic Technologies, Center for Life Science Technologies, RIKEN, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan. Electronic address: kengo.usui@riken.jp.
authors.forename: Kengo
authors.initials: K
authors.lastname: Usui
mesh_terms: D002843:Chromatin / Q000378:metabolism*; D006801:Humans; D011401:Promoter Regions, Genetic; D016615:Telomere; D014158:Transcription, Genetic
chemical_list: D002843:Chromatin
keywords: Chromatin; TERRA; Telomere