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© Research
Publication : Science (New York, N.Y.)

Deep functional analysis of synII, a 770-kilobase synthetic yeast chromosome

Team: Spatial Regulation of Genomes
Member: Romain Koszul
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Science (New York, N.Y.) - 10 Mar 2017

Shen Y, Wang Y, Chen T, Gao F, Gong J, Abramczyk D, Walker R, Zhao H, Chen S, Liu W, Luo Y, Müller CA, Paul-Dubois-Taine A, Alver B, Stracquadanio G, Mitchell LA, Luo Z, Fan Y, Zhou B, Wen B, Tan F, Wang Y, Zi J, Xie Z, Li B, Yang K, Richardson SM, Jiang H, French CE, Nieduszynski CA, Koszul R, Marston AL, Yuan Y, Wang J, Bader JS, Dai J, Boeke JD, Xu X, Cai Y, Yang H

Link to Pubmed [PMID] – 28280153

Science 2017 Mar;355(6329)

Here, we report the successful design, construction, and characterization of a 770-kilobase synthetic yeast chromosome II (synII). Our study incorporates characterization at multiple levels-including phenomics, transcriptomics, proteomics, chromosome segregation, and replication analysis-to provide a thorough and comprehensive analysis of a synthetic chromosome. Our Trans-Omics analyses reveal a modest but potentially relevant pervasive up-regulation of translational machinery observed in synII, mainly caused by the deletion of 13 transfer RNAs. By both complementation assays and SCRaMbLE (synthetic chromosome rearrangement and modification by loxP-mediated evolution), we targeted and debugged the origin of a growth defect at 37°C in glycerol medium, which is related to misregulation of the high-osmolarity glycerol response. Despite the subtle differences, the synII strain shows highly consistent biological processes comparable to the native strain.