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Komolov AS, Sannikova EP, Gorbunov AA, Gubaidullin II, Plokhikh KS, Konstantinova GE, Bulushova NV, Kuchin SV, Kozlov DG. Synthesis of biologically active proteins as L6KD-SUMO fusions forming inclusion bodies in Escherichia coli. Biotechnol Bioeng 2024; 121:535-550. [PMID: 37927002 DOI: 10.1002/bit.28587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 09/19/2023] [Accepted: 09/24/2023] [Indexed: 11/07/2023]
Abstract
A new platform has been developed to facilitate the production of biologically active proteins and peptides in Escherichia coli. The platform includes an N-terminal self-associating L6 KD peptide fused to the SUMO protein (small ubiquitin-like protein modifier) from the yeast Saccharomyces cerevisiae, which is known for its chaperone activity. The target proteins are fused at the C termini of the L6 KD-SUMO fusions, and the resulting three-component fusion proteins are synthesized and self-assembled in E. coli into so-called active inclusion bodies (AIBs). In vivo, the L6 KD-SUMO platform facilitates the correct folding of the target proteins and directs them into AIBs, greatly simplifying their purification. In vitro, the platform facilitates the effective separation of AIBs by centrifugation and subsequent target protein release using SUMO-specific protease. The properties of the AIBs were determined using five proteins with different sizes, folding efficiencies, quaternary structure, and disulfide modifications. Electron microscopy shows that AIBs are synthesized in the form of complex fibrillar structures resembling "loofah sponges" with unusually thick filaments. The obtained results indicate that the new platform has promising features and could be developed to facilitate the synthesis and purification of target proteins and protein complexes without the use of renaturation.
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Affiliation(s)
| | | | | | - Irek I Gubaidullin
- National Research Center "Kurchatov Institute", Moscow, Russia
- Kurchatov Genomic Center, National Research Center "Kurchatov Institute"-GOSNIIGENETIKA, Moscow, Russia
| | | | | | | | - Sergei V Kuchin
- Department of Biological Sciences, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
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Belkova M, Janegova T, Hrabarova E, Nahalka J. Physiologically Aggregated LacZ Applied in Trehalose Galactosylation in a Recycled Batch Mode. Life (Basel) 2023; 13:1619. [PMID: 37629477 PMCID: PMC10455999 DOI: 10.3390/life13081619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/17/2023] [Accepted: 07/22/2023] [Indexed: 08/27/2023] Open
Abstract
Galactooligosaccharides obtained via β-galactosidase transgalactosylation have health-promoting properties and are widely recognized as effective prebiotics. Trehalose-based galactooligosaccharides could be introduced into food and pharmaceutical industries similarly to trehalose. In light of this, new technological approaches are needed. Recently, in vivo enzyme immobilizations for recombinant proteins have been introduced, and physiological aggregation into active inclusion bodies (aIBs) has emerged as one such method of in vivo immobilization. To prepare LacZ β-galactosidase in the form of aIBs, we used a short 10 amino acid aggregation-prone tag. These native protein particles were simply washed from the cell lysate and applied in trehalose galactosylation in a recycled batch mode. In this study, aIBs entrapped in alginate beads, encapsulated in alginate/cellulose sulfate/poly(methylene-co-guanidine) capsules and magnetized were compared with free aIBs. Alginate/cellulose sulfate/PMCG capsules showed more suitable properties and applicability for biotransformation of trehalose at its high concentration (25%, w/v) and elevated temperature (50 °C).
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Affiliation(s)
- Martina Belkova
- Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, Dubravska Cesta 9, SK-84538 Bratislava, Slovakia; (M.B.)
- Institute of Chemistry, Centre of Excellence for White-Green Biotechnology, Slovak Academy of Sciences, Trieda Andreja Hlinku 2, SK-94976 Nitra, Slovakia
| | - Tatiana Janegova
- Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, Dubravska Cesta 9, SK-84538 Bratislava, Slovakia; (M.B.)
- Institute of Chemistry, Centre of Excellence for White-Green Biotechnology, Slovak Academy of Sciences, Trieda Andreja Hlinku 2, SK-94976 Nitra, Slovakia
| | - Eva Hrabarova
- Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, Dubravska Cesta 9, SK-84538 Bratislava, Slovakia; (M.B.)
- Institute of Chemistry, Centre of Excellence for White-Green Biotechnology, Slovak Academy of Sciences, Trieda Andreja Hlinku 2, SK-94976 Nitra, Slovakia
| | - Jozef Nahalka
- Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, Dubravska Cesta 9, SK-84538 Bratislava, Slovakia; (M.B.)
- Institute of Chemistry, Centre of Excellence for White-Green Biotechnology, Slovak Academy of Sciences, Trieda Andreja Hlinku 2, SK-94976 Nitra, Slovakia
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Roca-Pinilla R, Arís A, Garcia-Fruitós E. Antimicrobial Applications of Inclusion Bodies. Methods Mol Biol 2023; 2617:257-269. [PMID: 36656531 DOI: 10.1007/978-1-0716-2930-7_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A broad number of inclusion bodies (IBs) potential uses, including biocatalysis, biocompatible nanomaterials, and nanopills for biomedicine, have been described so far. Recently, it has also been shown that they can also be used as antimicrobial agents. Here, we describe the protocol used to produce and purify IBs with antimicrobial activity at desirable yields and also an optimized and simple methodology to determine the antimicrobial activity of IBs against bacterial strains.
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Affiliation(s)
- Ramon Roca-Pinilla
- Translational Vectorology Research Unit, Children's Medical Research Institute, The University of Sydney, Westmead, NSW, Australia
| | - Anna Arís
- Department of Ruminant Production, Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Caldes de Montbui, Spain.
| | - Elena Garcia-Fruitós
- Department of Ruminant Production, Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Caldes de Montbui, Spain.
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