Characterization of Mammalian Regulatory Complexes at Single-Locus Resolution Using TINC
Date
2022
Authors
Knaupp, A.S.
Schittenhelm, R.B.
Polo, J.M.
Editors
Horsfield, J.
Marsman, J.
Marsman, J.
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Book chapter
Citation
Chromatin: Methods and Protocols, 2022 / Horsfield, J., Marsman, J. (ed./s), vol.2458, Ch.10, pp.175-193
Statement of Responsibility
Anja S. Knaupp, Ralf B. Schittenhelm, and Jose M. Polo
Conference Name
Abstract
In mammalian cells, multiprotein complexes form at specific genomic regulatory elements (REs) to control gene expression, which in turn is ultimately responsible for cellular identity. Consequently, insight into the molecular composition of these regulatory complexes is of major importance for our understanding of any physiological or pathological cellular state or transition. However, it remains extremely difficult to identify the protein complex(es) assembled at a specific RE in the mammalian genome using conventional approaches. We therefore developed a novel single locus isolation technique based on Transcription Activator-Like Effector (TALE) proteins termed TALE-mediated isolation of nuclear chromatin (TINC). When coupled with high-resolution mass spectrometry, TINC enables the identification and characterization of protein complexes formed at any RE of interest. Using the Nanog promoter in mouse embryonic stem cells as proof of concept, this chapter describes in detail the novel TINC methodology as well as subsequent mass spectrometric considerations.
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Provenance
Description
Book series - Print ISSN: 1064-3745 ; Electronic ISSN: 1940-6029
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Rights
© The Author(s), under exclusive license to Springer Science+Business Media, LLC, part of Springer Nature 2022