Article (Scientific journals)
Power-law behavior of transcription factor dynamics at the single-molecule level implies a continuum affinity model.
Garcia, David A; Fettweis, Grégory; Presman, Diego M et al.
2021In Nucleic Acids Research, 49 (12), p. 6605 - 6620
Peer Reviewed verified by ORBi
 

Files


Full Text
gkab072.pdf
Author postprint (3.91 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Receptors, Glucocorticoid; Transcription Factors; Animals; Cell Line, Tumor; Kinetics; Mice; Models, Biological; Photobleaching; Protein Binding; Receptors, Glucocorticoid/metabolism; Single Molecule Imaging; Transcription Factors/metabolism; Genetics
Abstract :
[en] Single-molecule tracking (SMT) allows the study of transcription factor (TF) dynamics in the nucleus, giving important information regarding the diffusion and binding behavior of these proteins in the nuclear environment. Dwell time distributions obtained by SMT for most TFs appear to follow bi-exponential behavior. This has been ascribed to two discrete populations of TFs-one non-specifically bound to chromatin and another specifically bound to target sites, as implied by decades of biochemical studies. However, emerging studies suggest alternate models for dwell-time distributions, indicating the existence of more than two populations of TFs (multi-exponential distribution), or even the absence of discrete states altogether (power-law distribution). Here, we present an analytical pipeline to evaluate which model best explains SMT data. We find that a broad spectrum of TFs (including glucocorticoid receptor, oestrogen receptor, FOXA1, CTCF) follow a power-law distribution of dwell-times, blurring the temporal line between non-specific and specific binding, suggesting that productive binding may involve longer binding events than previously believed. From these observations, we propose a continuum of affinities model to explain TF dynamics, that is consistent with complex interactions of TFs with multiple nuclear domains as well as binding and searching on the chromatin template.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Garcia, David A ;  Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Bethesda, MD 20893, USA ; Department of Physics, University of Maryland, College Park, MD 20742, USA
Fettweis, Grégory   ;  Université de Liège - ULiège > Département des sciences de la vie > Génétique et biologie moléculaires animales ; Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Bethesda, MD 20893, USA
Presman, Diego M ;  Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Bethesda, MD 20893, USA ; Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), CONICET-Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, C1428EGA, Buenos Aires, Argentina
Paakinaho, Ville ;  Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Bethesda, MD 20893, USA ; Institute of Biomedicine, University of Eastern Finland, Kuopio, PO Box 1627, FI-70211 Kuopio, Finland
Jarzynski, Christopher;  Department of Physics, University of Maryland, College Park, MD 20742, USA ; Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA ; Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742, USA
Upadhyaya, Arpita;  Department of Physics, University of Maryland, College Park, MD 20742, USA ; Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742, USA
Hager, Gordon L ;  Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Bethesda, MD 20893, USA
 These authors have contributed equally to this work.
Language :
English
Title :
Power-law behavior of transcription factor dynamics at the single-molecule level implies a continuum affinity model.
Publication date :
09 July 2021
Journal title :
Nucleic Acids Research
ISSN :
0305-1048
eISSN :
1362-4962
Publisher :
Oxford University Press, England
Volume :
49
Issue :
12
Pages :
6605 - 6620
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
NIH - National Institutes of Health
NCI - National Cancer Institute
CONICET - National Scientific and Technical Research Council
Academy of Finland
UEF - University of Eastern Finland
Sigrid Jusélius Foundation
Available on ORBi :
since 23 May 2023

Statistics


Number of views
21 (3 by ULiège)
Number of downloads
1 (1 by ULiège)

Scopus citations®
 
57
Scopus citations®
without self-citations
49
OpenCitations
 
33
OpenAlex citations
 
87

Bibliography


Similar publications



Contact ORBi