Tuning Transcription Factor Availability through Acetylation-Mediated Genomic Redistribution
Standard
Tuning Transcription Factor Availability through Acetylation-Mediated Genomic Redistribution. / Louphrasitthiphol, Pakavarin; Siddaway, Robert; Loffreda, Alessia; Pogenberg, Vivian; Friedrichsen, Hans; Schepsky, Alexander; Zeng, Zhiqiang; Lu, Min; Strub, Thomas; Freter, Rasmus; Lisle, Richard; Suer, Eda; Thomas, Benjamin; Schuster-Böckler, Benjamin; Filippakopoulos, Panagis; Middleton, Mark; Lu, Xin; Patton, E Elizabeth; Davidson, Irwin; Lambert, Jean-Philippe; Wilmanns, Matthias; Steingrímsson, Eiríkur; Mazza, Davide; Goding, Colin R.
in: MOL CELL, Jahrgang 79, Nr. 3, 06.08.2020, S. 472-487.e10.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
Harvard
APA
Vancouver
Bibtex
}
RIS
TY - JOUR
T1 - Tuning Transcription Factor Availability through Acetylation-Mediated Genomic Redistribution
AU - Louphrasitthiphol, Pakavarin
AU - Siddaway, Robert
AU - Loffreda, Alessia
AU - Pogenberg, Vivian
AU - Friedrichsen, Hans
AU - Schepsky, Alexander
AU - Zeng, Zhiqiang
AU - Lu, Min
AU - Strub, Thomas
AU - Freter, Rasmus
AU - Lisle, Richard
AU - Suer, Eda
AU - Thomas, Benjamin
AU - Schuster-Böckler, Benjamin
AU - Filippakopoulos, Panagis
AU - Middleton, Mark
AU - Lu, Xin
AU - Patton, E Elizabeth
AU - Davidson, Irwin
AU - Lambert, Jean-Philippe
AU - Wilmanns, Matthias
AU - Steingrímsson, Eiríkur
AU - Mazza, Davide
AU - Goding, Colin R
N1 - Copyright © 2020 The Authors. Published by Elsevier Inc. All rights reserved.
PY - 2020/8/6
Y1 - 2020/8/6
N2 - It is widely assumed that decreasing transcription factor DNA-binding affinity reduces transcription initiation by diminishing occupancy of sequence-specific regulatory elements. However, in vivo transcription factors find their binding sites while confronted with a large excess of low-affinity degenerate motifs. Here, using the melanoma lineage survival oncogene MITF as a model, we show that low-affinity binding sites act as a competitive reservoir in vivo from which transcription factors are released by mitogen-activated protein kinase (MAPK)-stimulated acetylation to promote increased occupancy of their regulatory elements. Consequently, a low-DNA-binding-affinity acetylation-mimetic MITF mutation supports melanocyte development and drives tumorigenesis, whereas a high-affinity non-acetylatable mutant does not. The results reveal a paradoxical acetylation-mediated molecular clutch that tunes transcription factor availability via genome-wide redistribution and couples BRAF to tumorigenesis. Our results further suggest that p300/CREB-binding protein-mediated transcription factor acetylation may represent a common mechanism to control transcription factor availability.
AB - It is widely assumed that decreasing transcription factor DNA-binding affinity reduces transcription initiation by diminishing occupancy of sequence-specific regulatory elements. However, in vivo transcription factors find their binding sites while confronted with a large excess of low-affinity degenerate motifs. Here, using the melanoma lineage survival oncogene MITF as a model, we show that low-affinity binding sites act as a competitive reservoir in vivo from which transcription factors are released by mitogen-activated protein kinase (MAPK)-stimulated acetylation to promote increased occupancy of their regulatory elements. Consequently, a low-DNA-binding-affinity acetylation-mimetic MITF mutation supports melanocyte development and drives tumorigenesis, whereas a high-affinity non-acetylatable mutant does not. The results reveal a paradoxical acetylation-mediated molecular clutch that tunes transcription factor availability via genome-wide redistribution and couples BRAF to tumorigenesis. Our results further suggest that p300/CREB-binding protein-mediated transcription factor acetylation may represent a common mechanism to control transcription factor availability.
U2 - 10.1016/j.molcel.2020.05.025
DO - 10.1016/j.molcel.2020.05.025
M3 - SCORING: Journal article
C2 - 32531202
VL - 79
SP - 472-487.e10
JO - MOL CELL
JF - MOL CELL
SN - 1097-2765
IS - 3
ER -