The α-mating factor secretion signals and endogenous signal peptides for recombinant protein secretion in Komagataella phaffii

Biotechnology for Biofuels and Bioproducts

Research

Xuequn Chen¹  Yao Lin¹  Shengyan Wang²  Chenwei Zou²  Chenshan Zhang²  Lingfang Lu²  Yide Huang³ 

[1] Central Laboratory at the Second Affiliated Hospital of Fujian Traditional Chinese Medical University, Innovation and Transformation Center, Fujian University of Traditional Chinese Medicine, 350122, Fuzhou, Fujian, People’s Republic of China;Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, College of Life Sciences, Fujian Normal University, 350007, Fuzhou, China;Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, College of Life Sciences, Fujian Normal University, 350007, Fuzhou, China;Engineering Research Center of Industrial Microbiology, College of Life Sciences, Fujian Normal University, 350007, Fuzhou, China;

关键词: Komagataella phaffii;    α-Mating factor;    Peptide signal;    Protein secretion;   

DOI  :  10.1186/s13068-022-02243-6

 received in 2022-04-12, accepted in 2022-12-08,  发布年份 2022

来源: Springer

【 摘 要 】

BackgroundThe budding yeast Komagataella phaffii (Pichia pastoris) is widely employed to secrete proteins of academic and industrial interest. For secretory proteins, signal peptides are the sorting signal to direct proteins from cytosol to extracellular matrix, and their secretion efficiency directly impacts the yields of the targeted proteins in fermentation broth. Although the α-mating factor (MF) secretion signal from S. cerevisiae, the most common and widely used signal sequence for protein secretion, works in most cases, limitation exists as some proteins cannot be secreted efficiently. As the optimal choice of secretion signals is often protein specific, more secretion signals need to be developed to augment protein expression levels in K. phaffii.ResultsIn this study, the secretion efficiency of 40 α-MF secretion signals from various yeast species and 32 endogenous signal peptides from K. phaffii were investigated using enhanced green fluorescent protein (EGFP) as the model protein. All of the evaluated α-MF secretion signals successfully directed EGFP secretion except for the secretion signals of the yeast D. hansenii CBS767 and H. opuntiae. The secretion efficiency of α-MF secretion signal from Wickerhamomyces ciferrii was higher than that from S. cerevisiae. 24 out of 32 endogenous signal peptides successfully mediated EGFP secretion. The signal peptides of chr3_1145 and FragB_0048 had similar efficiency to S. cerevisiae α-MF secretion signal for EGFP secretion and expression.ConclusionsThe screened α-MF secretion signals and endogenous signal peptides in this study confer an abundance of signal peptide selection for efficient secretion and expression of heterologous proteins in K. phaffii.

【 授权许可】

CC BY   
© The Author(s) 2022

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