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De novo designed protein guiding targeted protein degradation
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Journal Article
De novo designed protein guiding targeted protein degradation
2025
Overview
Targeted protein degradation is a powerful tool for biological research, cell therapy, and synthetic biology. However, conventional methods often depend on pre-fused degrons or chemical degraders, limiting their wider applications. Here we develop a guided protein labeling and degradation system (GPlad) in
Escherichia coli
, using de novo designed guide proteins and arginine kinase (McsB) for precise degradation of various proteins, including fluorescent proteins, metabolic enzymes, and human proteins. We expand GPlad into versatile tools such as antiGPlad, OptoGPlad, and GPTAC, enabling reversible inhibition, optogenetic regulation, and biological chimerization. The combination of GPlad and antiGPlad allows for programmable circuit construction, including ON/OFF switches, signal amplifiers, and oscillators. OptoGPlad-mediated degradation of MutH accelerates
E. coli
evolution under protocatechuic acid stress, reducing the required generations from 220 to 100. GPTAC-mediated degradation of AroE enhanced the titer of 3-dehydroshikimic acid to 92.6 g/L, a 23.8% improvement over the conventional CRISPR interference method. We provide a tunable, plug-and-play strategy for straightforward protein degradation without the need for pre-fusion, with substantial implications for synthetic biology and metabolic engineering.
Targeted protein degradation in bacteria typically requires fusion with tags or chemical degraders. Here, authors developed GPlad, a tunable system using designed guide proteins and arginine kinase to degrade diverse proteins in
E. coli
without the need for exogenous degraders or protein fusions.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 38/1
/ 38/111
/ 38/22
/ 38/23
/ 38/35
/ 38/44
/ 38/5
/ 38/77
/ 82/58
/ 82/80
/ 82/83
/ Biology
/ CRISPR
/ Design
/ E coli
/ Escherichia coli - metabolism
/ Escherichia coli Proteins - genetics
/ Escherichia coli Proteins - metabolism
/ Humanities and Social Sciences
/ Humans
/ Kinases
/ Protein Engineering - methods
/ Proteins
/ Science
