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Schneider, N.* ; Gäbelein, C.* ; Wiener, J.* ; Georgiev, T. ; Gobet, N.* ; Weber, W.* ; Meier, M.

Genetic code expansion method for temporal labeling of endogenously expressed proteins.

ACS Chem. Biol. 13, 3049-3053 (2018)
DOI PMC
Open Access Green as soon as Postprint is submitted to ZB.
We here present a method that combines genetic code expansion with CRISPR/Cas9 genome engineering to label endogenously expressed proteins with high spatiotemporal resolution. The method exploits the use of an orthogonal tRNA/tRNA synthetase pair in conjugation with noncanonical amino acids to create stop codon read through events. To demonstrate the functionality of the method, we pulse labeled endogenous β-actin and tumor protein p53 with a minimally invasive HA tag at their C-termini. Targeting the protein label with a proximity ligation assay plus real time imaging facilitates seamless quantification of the protein synthesis rate and spatial localization at the single cell level. The presented approach does not interfere with any physiological control of cellular expression, nor did we observe any perturbation of endogenous protein functions.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
ISSN (print) / ISBN 1554-8929
e-ISSN 1554-8937
Quellenangaben Volume: 13, Issue: 11, Pages: 3049-3053 Article Number: , Supplement: ,
Publisher American Chemical Society (ACS)
Publishing Place Washington
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Helmholtz Pioneer Campus (HPC)