PMID- 30537227 OWN - NLM STAT- MEDLINE DCOM- 20190819 LR - 20231213 IS - 1097-0061 (Electronic) IS - 0749-503X (Linking) VI - 36 IP - 5 DP - 2019 May TI - YHp as a highly stable, hyper-copy, hyper-expression plasmid constructed using a full 2-mum circle sequence in cir(0) strains of Saccharomyces cerevisiae. PG - 249-257 LID - 10.1002/yea.3371 [doi] AB - In the yeast Saccharomyces cerevisiae, the yeast episomal plasmid (YEp), containing a partial sequence from a natural 2-mum plasmid, has been frequently used to induce high levels of gene expression. In this study, we used Japanese sake yeast natural cir(0) strain as a host for constructing an entire 2-mum plasmid with an expression construct using the three-fragment gap-repair method without Escherichia coli manipulation. The 2-mum plasmid contains two long inverted repeats, which is problematic for the amplification by polymerase chain reaction. Therefore, we amplified it by dividing into two fragments, each containing a single repeat together with an overlapping sequence for homologous recombination. TDH3 promoter-driven yEmRFP (TDH3p-yEmRFP) and the URA3 were used as a reporter gene and a selection marker, respectively, and inserted at the 3' end of the RAF1 gene on the 2-mum plasmid. The three fragments were combined and used for the transformation of sake yeast cir(0) ura3(-) strain. The resulting transformant colonies showed a red or purple coloration, which was significantly stronger than that of the cells transformed with YEp-TDH3p-yEmRFP. The 2-mum transformants were cultured in YPD medium and observed by fluorescence microscopy. Almost all cells showed strong fluorescence, suggesting that the plasmid was preserved during nonselective culture conditions. The constructed plasmid maintained a high copy state similar to that of the natural 2-mum plasmid, and the red fluorescent protein expression was 54 fold compared with the chromosomal integrant. This vector is named YHp, the Yeast Hyper expression plasmid. CI - (c) 2018 John Wiley & Sons, Ltd. FAU - Misumi, Yukie AU - Misumi Y AD - Department of Applied Chemistry, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Ube, Japan. FAU - Nishioka, Satoko AU - Nishioka S AD - Department of Applied Chemistry, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Ube, Japan. FAU - Fukuda, Akira AU - Fukuda A AD - JXTG Nippon Oil & Energy Corporation, Yokohama, Japan. FAU - Uemura, Takeshi AU - Uemura T AD - JXTG Nippon Oil & Energy Corporation, Yokohama, Japan. FAU - Nakamura, Mikiko AU - Nakamura M AD - Department of Applied Chemistry, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Ube, Japan. FAU - Hoshida, Hisashi AU - Hoshida H AD - Department of Applied Chemistry, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Ube, Japan. FAU - Akada, Rinji AU - Akada R AUID- ORCID: 0000-0001-9044-9917 AD - Department of Applied Chemistry, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Ube, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190124 PL - England TA - Yeast JT - Yeast (Chichester, England) JID - 8607637 RN - 0 (DNA, Fungal) RN - 0 (Luminescent Proteins) MH - Cloning, Molecular MH - DNA, Fungal/genetics MH - Fermented Foods/microbiology MH - Gene Expression MH - *Genes, Fungal MH - Luminescent Proteins/genetics MH - *Nucleic Acid Amplification Techniques MH - Plasmids/*genetics MH - Recombination, Genetic MH - Saccharomyces cerevisiae/*genetics MH - Red Fluorescent Protein OTO - NOTNLM OT - 2-mum plasmid OT - YEp OT - gap-repair cloning OT - homologous recombination OT - recombinant DNA OT - sake yeast EDAT- 2018/12/12 06:00 MHDA- 2019/08/20 06:00 CRDT- 2018/12/12 06:00 PHST- 2018/10/10 00:00 [received] PHST- 2018/11/20 00:00 [revised] PHST- 2018/11/24 00:00 [accepted] PHST- 2018/12/12 06:00 [pubmed] PHST- 2019/08/20 06:00 [medline] PHST- 2018/12/12 06:00 [entrez] AID - 10.1002/yea.3371 [doi] PST - ppublish SO - Yeast. 2019 May;36(5):249-257. doi: 10.1002/yea.3371. Epub 2019 Jan 24.