Abstract
The 3D organization of chromatin plays an important role in genome stability and many other pivotal biological programs. Therefore, the establishment of imaging methods, which enable us to study the dynamics of chromatin in living cells, is necessary. Although primary live cell imaging methods were a breakthrough, there is a need to develop more specific labeling techniques. With the discovery of programmable DNA binding proteins, such zinc finger proteins (ZFP), transcription activator-like effectors (TALE), and clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9), a major leap forward was made. Here, we review the applications and potential of fluorescent repressor-operator systems, programmable DNA binding proteins with an emphasis on CRISPR-based chromatin imaging in living and fixed cells, and their potential application in plant science.
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