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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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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 19311
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 13621
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 12315
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 17639
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 2016.05.11 10311
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 10798
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 13246
233 최길주 교수, KAIST 지정 석좌교수 임명 / Prof. Giltsu Choi is appointed KAIST-chair professor. 생명과학과 2016.03.16 16586
232 오병하 교수, 제 9회 아산의학상 수상 file 생명과학과 2016.03.14 18047
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 11965
230 2015년 KAIST 대표 R&D 연구성과 10선 선정 / Announcement of KAIST's Top 10 Research Accomplishments of 2015 생명과학과 2016.03.07 10837
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 9637
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 12968
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 15637
226 전상용 교수, 차세대 면역항암제 플랫폼 개발 위한 공동연구협약 체결 / Professor Sangyong Jon, make a research-cooperation contract for developing next-genreation anti-cancer drug platform 관리자 2016.01.08 15990
225 최준호 교수, 한국분자-세포생물학회 회장 취임 / Professor Joonho Choe is augurated as the chairman of KSMCB 생명과학과 2016.01.05 11331
224 김정현 박사과정 학생 (최길주 교수님 lab), AOCP 2015 우수 포스터상 1등 수상! / Junghyun Kim (PhD Candidate; Giltsu Choi's lab) won the Best poster award at AOCP 2015. file 생명과학과 2015.12.11 16754
223 김진우 교수, 김형태 박사 Cell Reports에 논문 게재(2015.10) / Professor Jin Woo Kim and Hyung-Tai Kim Ph.D. published paper in Cell reports (2015.10) file 생명과학과 2015.10.29 17471
222 허원도,김대수,한용만 교수 공동연구팀,Nature Biotechnology지에 표지논문 게재 file 생명과학과 2015.10.12 40630
221 박혜림 학생 (허원도 교수님 Lab), 제1회 다카라 우수논문상 수상! / Hyerim Park (Won Do Heo's lab) won the first Takara outstanding paper award! file 생명과학과 2015.10.07 25661
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