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Construction of Fully Segregated Genomic Libraries in Polyploid Organisms Such as Synechocystis sp. PCC 6803.


ABSTRACT: Several microbes are polyploid, meaning they contain several copies of their chromosome. Cyanobacteria, while holding great potential as photosynthetic cell factories of various products, are found among them. In these clades the diversity of genetic elements that serve within the basic molecular toolbox is often limiting. To assist mining for the latter, we present here a method for the generation of fully segregated genomic libraries, specifically designed for polyploids. We provide proof-of-principle for this method by generating a fully segregated genomic promoter library in the cyanobacterium Synechocystis sp. PCC 6803. This new tool was first analyzed through fluorescence activated cell sorting (FACS) and then a fraction was further characterized regarding promoter sequence. The location of libraries on the chromosome provides a better reflection of the behavior of its elements. Our work presents the first method for constructing fully segregated genomic libraries in polyploids, which may facilitate their usage in synthetic biology applications.

SUBMITTER: Caicedo-Burbano P 

PROVIDER: S-EPMC7573980 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

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Construction of Fully Segregated Genomic Libraries in Polyploid Organisms Such as <i>Synechocystis</i> sp. PCC 6803.

Caicedo-Burbano Patricia P   Smit Tycho T   Pineda Hernández Hugo H   Du Wei W   Branco Dos Santos Filipe F  

ACS synthetic biology 20201005 10


Several microbes are polyploid, meaning they contain several copies of their chromosome. Cyanobacteria, while holding great potential as photosynthetic cell factories of various products, are found among them. In these clades the diversity of genetic elements that serve within the basic molecular toolbox is often limiting. To assist mining for the latter, we present here a method for the generation of fully segregated genomic libraries, specifically designed for polyploids. We provide proof-of-p  ...[more]

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