Comparative transcriptome analysis of genomic region deletion strain with enhanced l-tyrosine production in Saccharomyces cerevisiae
Artikel i vetenskaplig tidskrift, 2020

Objective To determine the effect of large genomic region deletion in a Saccharomyces cerevisiae strain on tyrosine yield and to identify new genetic modification targets through transcriptome analysis. Results TAL was used to produce p-coumaric acid (p-CA) from tyrosine to quantity tyrosine yield. S. cerevisiae mutant strain NK14 with deletion of a 23.8 kb genomic region was identified to have p-CA production of 10.3 mg L- 1, while the wild-type strain BY4741 had p-CA production of 1.06 mg L- 1. Analysis of growth patterns and stress tolerance showed that the deletion did not affect the growth phenotype of NK14. Transcriptome analysis suggested that, compared to BY4741, genes related to glycolysis (ENO2, TKL1) and the tyrosine pathway (ARO1, ARO2, ARO4, ARO7, TYR1) were upregulated in NK14 at different levels. Besides genes related to the tyrosine biosynthetic pathway, amino acid transporters (AVT6, VBA5, THI72) and transcription factor (ARO80) also showed changes in transcription levels. Conclusions We developed a strain with improved tyrosine yield and identified new genetic modification candidates for tyrosine production.


p-Coumaric acid

Transcriptome analysis

Large deletion

Saccharomyces cerevisiae


Yuzhen Wu

Nankai University

Miao Cai

Nankai University

Xiaofei Song

Nankai University

Yuanzi Li

Nankai University

Hesuiyuan Wang

Nankai University

Jiwei Mao

Chalmers, Biologi och bioteknik, Systembiologi

Quanli Liu

Chalmers, Biologi och bioteknik, Systembiologi

Haijin Xu

Nankai University

Mingqiang Qiao

Nankai University

Biotechnology Letters

0141-5492 (ISSN) 1573-6776 (eISSN)

Vol. 42 3 453-460



Medicinsk genetik






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