Title |
The HAC1 gene from Pichia pastoris: characterization and effect of its overexpression on the production of secreted, surface displayed and membrane proteins
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Published in |
Microbial Cell Factories, June 2010
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DOI | 10.1186/1475-2859-9-49 |
Pubmed ID | |
Authors |
Mouna Guerfal, Stefan Ryckaert, Pieter P Jacobs, Paul Ameloot, Kathleen Van Craenenbroeck, Riet Derycke, Nico Callewaert |
Abstract |
The unfolded protein response (UPR) in eukaryotes upregulates factors that restore ER homeostasis upon protein folding stress and in yeast is activated by a non-conventional splicing of the HAC1 mRNA. The spliced HAC1 mRNA encodes an active transcription factor that binds to UPR-responsive elements in the promoter of UPR target genes. Overexpression of the HAC1 gene of S. cerevisiae can reportedly lead to increased production of heterologous proteins. To further such studies in the biotechnology favored yeast Pichia pastoris, we cloned and characterized the P. pastoris HAC1 gene and the splice event. |
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