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David G, Fogeron ML, Montserret R, Lecoq L, Page A, Delolme F, Nassal M, Böckmann A. Phosphorylation and Alternative Translation on Wheat Germ Cell-Free Protein Synthesis of the DHBV Large Envelope Protein. Front Mol Biosci 2019; 6:138. [PMID: 31850370 PMCID: PMC6902406 DOI: 10.3389/fmolb.2019.00138] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 11/18/2019] [Indexed: 12/13/2022] Open
Abstract
Wheat-germ cell-free protein synthesis (WG-CFPS) is a potent platform for the high-yield production of proteins. It is especially of interest for difficult-to-express eukaryotic proteins, such as toxic and transmembrane proteins, and presents an important tool in high-throughput protein screening. Until recently, an assumed drawback of WG-CFPS was a reduced capacity for post-translational modifications. Meanwhile, phosphorylation has been observed in WG-CFPS; yet, authenticity of the respective phosphorylation sites remained unclear. Here we show that a viral membrane protein, the duck hepatitis B virus (DHBV) large envelope protein (DHBs L), produced by WG-CFPS, is phosphorylated upon translation at the same sites as DHBs L produced during DHBV infection of primary hepatocytes. Furthermore, we show that alternative translation initiation of the L protein, previously identified in virus-producing hepatic cells, occurs on WG-CFPS as well. Together, these findings further strengthen the high potential of WG-CFPS to include the reproduction of specific modifications proteins experience in vivo.
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Affiliation(s)
- Guillaume David
- Institut de Biologie et Chimie des Protéines, MMSB, Labex Ecofect, UMR 5086 CNRS, Université de Lyon, Lyon, France
| | - Marie-Laure Fogeron
- Institut de Biologie et Chimie des Protéines, MMSB, Labex Ecofect, UMR 5086 CNRS, Université de Lyon, Lyon, France
| | - Roland Montserret
- Institut de Biologie et Chimie des Protéines, MMSB, Labex Ecofect, UMR 5086 CNRS, Université de Lyon, Lyon, France
| | - Lauriane Lecoq
- Institut de Biologie et Chimie des Protéines, MMSB, Labex Ecofect, UMR 5086 CNRS, Université de Lyon, Lyon, France
| | - Adeline Page
- Protein Science Facility, SFR BioSciences CNRS UMS3444, Inserm US8, UCBL, ENS de Lyon, Lyon, France
| | - Frédéric Delolme
- Protein Science Facility, SFR BioSciences CNRS UMS3444, Inserm US8, UCBL, ENS de Lyon, Lyon, France
| | - Michael Nassal
- Internal Medicine II/Molecular Biology, University Hospital Freiburg, Freiburg, Germany
| | - Anja Böckmann
- Institut de Biologie et Chimie des Protéines, MMSB, Labex Ecofect, UMR 5086 CNRS, Université de Lyon, Lyon, France
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