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CRAPS: Chromosomal-Repair-Assisted Pathway Shuffling in Yeast. | LitMetric

CRAPS: Chromosomal-Repair-Assisted Pathway Shuffling in Yeast.

ACS Synth Biol

Department of Biology, Concordia University, Montréal, Quebec, Canada H4B 1R6.

Published: September 2023

AI Article Synopsis

Article Abstract

A fundamental challenge of metabolic engineering involves assembling and screening vast combinations of orthologous enzymes across a multistep biochemical pathway. Current pathway assembly workflows involve combining genetic parts and assembling one pathway configuration per tube or well. Here, we present CRAPS, hromosomal-epair-ssisted athway huffling, an pathway engineering technique that enables the self-assembly of one pathway configuration per cell. CRAPS leverages the yeast chromosomal repair pathway and utilizes a pool of inactive, chromosomally integrated orthologous gene variants corresponding to a target multistep pathway. Supplying gRNAs to the CRAPS host activates the expression of one gene variant per pathway step, resulting in a unique pathway configuration in each cell. We deployed CRAPS to build more than 1000 theoretical combinations of a four-step carotenoid biosynthesis network. Sampling the CRAPS pathway space yielded strains with distinct color phenotypes and carotenoid product profiles. We anticipate that CRAPS will expedite strain engineering campaigns by enabling the generation and sampling of vast biochemical spaces.

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Source
http://dx.doi.org/10.1021/acssynbio.3c00170DOI Listing

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