Gene Repositioning Is Under Constraints After Evolutionary Conserved Gene Neighborhood Separate

Frontiers in Genetics

Zhiming Dai¹ 

[1] Guangdong Province Key Laboratory of Big Data Analysis and Processing, Sun Yat-Sen University, Guangzhou, China;School of Data and Computer Science, Sun Yat-Sen University, Guangzhou, China;

关键词: genomic neighbors;    chromatin regulation;    gene expression;    yeast;    bioinformatics;   

DOI  :  10.3389/fgene.2019.01030

来源: DOAJ

【 摘 要 】

Genes are not randomly distributed on eukaryotic chromosomes. Some neighboring genes show order conservation among species, while some neighboring genes separate during evolution even though their neighborhoods are conserved in some species. Here, I investigated whether after-separation gene repositioning is under natural selection for evolutionary conserved gene neighborhoods compared with nonconserved neighborhoods. After separation, genes with conserved neighborhoods show low-expression divergence between the after-separation species and the before-separation species. After genes separate from their conserved gene neighbors, their after-separation gene neighbors tend to show coexpression and coprotein complex with their before-separation gene neighbors. These results indicate evolutionary constraints on the selection of neighboring genes after evolutionary conserved gene neighborhoods separate.

【 授权许可】

Unknown