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Journal Article
Creating a functional single-chromosome yeast
2018
Overview
Eukaryotic genomes are generally organized in multiple chromosomes. Here we have created a functional single-chromosome yeast from a
Saccharomyces cerevisiae
haploid cell containing sixteen linear chromosomes, by successive end-to-end chromosome fusions and centromere deletions. The fusion of sixteen native linear chromosomes into a single chromosome results in marked changes to the global three-dimensional structure of the chromosome due to the loss of all centromere-associated inter-chromosomal interactions, most telomere-associated inter-chromosomal interactions and 67.4% of intra-chromosomal interactions. However, the single-chromosome and wild-type yeast cells have nearly identical transcriptome and similar phenome profiles. The giant single chromosome can support cell life, although this strain shows reduced growth across environments, competitiveness, gamete production and viability. This synthetic biology study demonstrates an approach to exploration of eukaryote evolution with respect to chromosome structure and function.
Successive fusion of yeast chromosomes is used to produce a single-chromosome strain that is viable, albeit with slightly reduced fitness.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
/ 13/31
/ 13/44
/ 14/28
/ 14/34
/ 45/23
/ 45/29
/ 45/43
/ 45/47
/ 45/91
/ Artificial Gene Fusion - methods
/ Chromosomes, Artificial, Yeast - genetics
/ DNA
/ Genetic Engineering - methods
/ Genomes
/ Genomics
/ Humanities and Social Sciences
/ Meiosis
/ Microbial Viability - genetics
/ Saccharomyces cerevisiae - cytology
/ Saccharomyces cerevisiae - genetics
/ Saccharomyces cerevisiae - growth & development
/ Science
/ Structure-function relationships
/ Yeast
