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Antagonistic roles of Drosophila Tctp and Brahma in chromatin remodelling and stabilizing repeated sequences.


Abstract

Genome stability is essential for all organisms. Translationally controlled tumour protein (TCTP) is a conserved protein associated with cancers. TCTP is involved in multiple intracellular functions, but its role in transcription and genome stability is poorly understood. Here, we demonstrate new functions of Drosophila TCTP (Tctp) in transcription and the stability of repeated sequences (rDNA and pericentromeric heterochromatin). Tctp binds Brahma (Brm) chromatin remodeler to negatively modulate its activity. Tctp mutants show abnormally high levels of transcription in a large set of genes and transposons. These defects are ameliorated by brm mutations. Furthermore, Tctp promotes the stability of repeated sequences by opposing the Brm function. Additional regulation of pericentromeric heterochromatin by Tctp is mediated by su(var)3-9 transcriptional regulation. Altogether, Tctp regulates transcription and the stability of repeated sequences by antagonizing excess Brm activity. This study provides insights into broader nuclear TCTP functions for the maintenance of genome stability.


List of Articles
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» 최광욱 교수, 홍성태 박사 Nature Communications 논문 게재(2016.09) / Prof. Kwang-Wook Choi and Dr. Sung-Tae Hong published a paper in Nature Communications 생명과학과 2016.10.06 5952
245 전상용 교수, 2009~2014 기초학문 약학분야 9위 선정 생명과학과 2016.10.04 7680
244 김정회 교수, 한국생명공학연합회 초대 회장에 선출 / Professor Jung-Hoe Kim elected to the first president of Korea association of Bioenginiering file 생명과학과 2016.08.26 7749
243 허원도 교수, Trang T. T. Nguyen박사 PNAS지에 논문 게재(2016.08) / Prof. Won Do Heo, PhD. Trang T. T. Nguyen publish an article in PNAS (2016.08) 생명과학과 2016.08.25 6983
242 최길주 교수, 김정현 박사과정 학생 The Plant Cell 게재(2016.06) / Prof. Giltsu Choi and Junghyun Kim, a Ph.D. candidate published a paper in The Plant Cell (2016.06) 생명과학과 2016.07.05 6737
241 이주용 박사, 김세윤 교수, PNAS지에 논문 게재 / PhD Joo-Yong Lee and Prof, Seyun Kim published a paper in PNAS 생명과학과 2016.07.04 8513
240 전상용 교수, 몸 속 물질 이용한 염증 치료제 개발 / Prof. Sang-Yong Jon developed anti-inflammatory drug using biological materials 생명과학과 2016.06.15 7535
239 정유진 석사과정 학생, 조병관 교수 Nature Communications 논문 게재(2016.06) / Yujin Jeong, a Master's degree student and Prof. Byung-Kwan Cho published a paper in Nature Communications (2016.06) 생명과학과 2016.06.07 6471
238 허원도 교수, 김진만 박사, 이민지 박사과정 학생 PNAS지에 논문 게재(2016.05) / Prof. Won-Do Heo, PhD. Jin-Man Kim and Min-Ji lee publish an article in PNAS (2016.05) 생명과학과 2016.05.18 5892
237 김재현 박사과정 학생, 이승희 교수 J.Neurosci. 게재 (2016.05) / Jae-Hyun Kim and Prof. Seung-Hee Lee published article at J. Neurosci. (2016.05) 생명과학과 2016.05.18 7415
236 Thao Phuong Le 박사과정 학생, 최광욱 교수 Nature Communications 게재(2016.05) / Thao Phuong Le, a Ph.D candidate and Prof. Kwang-Wook Choi published a paper in Nature Communications (2016.05) 생명과학과 2016.05.12 5617
235 고창민 박사과정 학생, 최광욱 교수 Oncogene 게재(2016.04) / Chang Min Ko, a Ph.D candidate and Prof. Kwang-Wook Choi published a paper in Oncogene (2016.04) 생명과학과 2016.04.15 5597
234 허원도 교수, Mai Khanh Nguyen 박사과정 학생 Nature Chemical Biology 논문 게재(2016.04) / Prof. Won Do Heo and Mai Khanh Nguyen Ph.D. published a paper in a Nature Chemical Biology(2016.04) 생명과학과 2016.04.12 6284
233 최길주 교수, KAIST 지정 석좌교수 임명 / Prof. Giltsu Choi is appointed KAIST-chair professor. 생명과학과 2016.03.16 7416
232 오병하 교수, 제 9회 아산의학상 수상 file 생명과학과 2016.03.14 8757
231 정형록 박사과정 학생, 최광욱 교수 Development Cell 게재(2016.02) / Hyung-Lok Chung, a Ph.D candidate and Prof. Kwang-Wook Choi published a paper in Dev. Cell (2016.02) 생명과학과 2016.03.11 6117
230 2015년 KAIST 대표 R&D 연구성과 10선 선정 / Announcement of KAIST's Top 10 Research Accomplishments of 2015 생명과학과 2016.03.07 5511
229 개교 45주년 기념 우수교원 수상 / Announcement of the 2016 Faculty Award Winners in Commemoration of the 45th Anniversary of Founding 생명과학과 2016.03.07 4589
228 최은비 박사과정 학생(김미영 교수 실험실) Oncogene 게재(2016.02) / Eun-Bee Choi, a Ph.D candidate in Prof. Mi-Young Kim’s lab published a paper in Oncogene (2016.02) 생명과학과 2016.03.07 6022
227 박우용 박사과정 학생(김미영 교수 실험실) Cancer Research 게재(2016.01) / Woo-Yong Park, a Ph.D candidate in Prof. Mi-Young Kim’s lab published a paper in Cancer Research (2016. 1) file 생명과학과 2016.01.22 8220
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