1
|
Nanatani K, Ishii T, Masuda A, Katsube S, Ando T, Yoneyama H, Abe K. Novel transporter screening technology for chemical production by microbial fermentation. J GEN APPL MICROBIOL 2023; 69:142-149. [PMID: 36567121 DOI: 10.2323/jgam.2022.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In the fermentative production of compounds by using microorganisms, control of the transporter activity responsible for substrate uptake and product efflux, in addition to intracellular metabolic modification, is important from a productivity perspective. However, there has been little progress in analyses of the functions of microbial membrane transporters, and because of the difficulty in finding transporters that transport target compounds, only a few transporters have been put to practical use. Here, we constructed a Corynebacterium glutamicum-derived transporter expression library (CgTP-Express library) with the fusion partner gene mstX and used a peptide-feeding method with the dipeptide L-Ala-L-Ala to search for alanine exporters in the library. Among 39 genes in the library, five candidate alanine exporters (NCgl2533, NCgl2683, NCgl0986, NCgl0453, and NCgl0929) were found; expression of NCgl2533 increased the alanine concentration in cell culture. The CgTP-Express library was thus effective for finding a new transporter candidate.
Collapse
Affiliation(s)
- Kei Nanatani
- Department of Microbial Resources, Graduate School of Agricultural Science, Tohoku University
- Laboratory of Applied Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Science, Tohoku University
- The Advanced Research Center for Innovations in Next-Generation Medicine, Tohoku University
- Tohoku Medical Megabank Organization, Tohoku University
| | - Tomoko Ishii
- Laboratory of Applied Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Science, Tohoku University
| | - Ayumu Masuda
- Laboratory of Applied Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Science, Tohoku University
| | - Satoshi Katsube
- Laboratory of Animal Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Science, Tohoku University
| | - Tasuke Ando
- Laboratory of Animal Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Science, Tohoku University
| | - Hiroshi Yoneyama
- Laboratory of Animal Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Science, Tohoku University
| | - Keietsu Abe
- Department of Microbial Resources, Graduate School of Agricultural Science, Tohoku University
- Laboratory of Applied Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Science, Tohoku University
- Microbial Genomics Laboratory, New Industry Creation Hatchery Center, Tohoku University
| |
Collapse
|
2
|
Cho S, Lee H, Han YH, Park TS, Seo SW, Park TH. Design of an effective small expression tag to enhance GPCR production in E. coli-based cell-free and whole cell expression systems. Protein Sci 2023; 32:e4839. [PMID: 37967042 PMCID: PMC10682694 DOI: 10.1002/pro.4839] [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: 08/29/2023] [Revised: 11/10/2023] [Accepted: 11/11/2023] [Indexed: 11/17/2023]
Abstract
G protein-coupled receptors (GPCRs) play crucial roles in sensory, immune, and tumor metastasis processes, making them valuable targets for pharmacological and sensing applications in various industries. However, most GPCRs have low production yields in Escherichia coli (E. coli) expression systems. To overcome this limitation, we introduced AT10 tag, an effective fusion tag that could significantly enhance expression levels of various GPCRs in E. coli and its derived cell-free protein synthesis (CFPS) system. This AT10 tag consisted of an A/T-rich gene sequence designed via optimization of translation initiation rate. It is translated into a short peptide sequence of 10 amino acids at the N-terminus of GPCRs. Additionally, effector proteins could be utilized to suppress cytotoxicity caused by membrane protein expression, further boosting GPCR production in E. coli. Enhanced expression of various GPCRs using this AT10 tag is a promising approach for large-scale production of functional GPCRs in E. coli-based CFPS and whole cell systems, enabling their potential utilization across a wide range of industrial applications.
Collapse
Affiliation(s)
- Seongyeon Cho
- School of Chemical and Biological Engineering, Institute of Chemical ProcessSeoul National UniversitySeoulRepublic of Korea
| | - Haein Lee
- School of Chemical and Biological Engineering, Institute of Chemical ProcessSeoul National UniversitySeoulRepublic of Korea
| | - Yong Hee Han
- Interdisciplinary Program in BioengineeringSeoul National UniversitySeoulRepublic of Korea
| | - Tae Shin Park
- Receptech Research Institute, Receptech Inc.SiheungRepublic of Korea
| | - Sang Woo Seo
- School of Chemical and Biological Engineering, Institute of Chemical ProcessSeoul National UniversitySeoulRepublic of Korea
- Interdisciplinary Program in BioengineeringSeoul National UniversitySeoulRepublic of Korea
| | - Tai Hyun Park
- School of Chemical and Biological Engineering, Institute of Chemical ProcessSeoul National UniversitySeoulRepublic of Korea
- Interdisciplinary Program in BioengineeringSeoul National UniversitySeoulRepublic of Korea
- Department of Nutritional Science and Food ManagementEwha Womans UniversitySeoulRepublic of Korea
| |
Collapse
|
3
|
Petrovskaya LE, Lukashev EP, Mamedov MD, Kryukova EA, Balashov SP, Dolgikh DA, Rubin AB, Kirpichnikov MP, Siletsky SA. Oriented Insertion of ESR-Containing Hybrid Proteins in Proteoliposomes. Int J Mol Sci 2023; 24:ijms24087369. [PMID: 37108532 PMCID: PMC10138546 DOI: 10.3390/ijms24087369] [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: 03/16/2023] [Revised: 04/13/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
Microbial rhodopsins comprise a diverse family of retinal-containing membrane proteins that convert absorbed light energy to transmembrane ion transport or sensory signals. Incorporation of these proteins in proteoliposomes allows their properties to be studied in a native-like environment; however, unidirectional protein orientation in the artificial membranes is rarely observed. We aimed to obtain proteoliposomes with unidirectional orientation using a proton-pumping retinal protein from Exiguobacterium sibiricum, ESR, as a model. Three ESR hybrids with soluble protein domains (mCherry or thioredoxin at the C-terminus and Caf1M chaperone at the N-terminus) were obtained and characterized. The photocycle of the hybrid proteins incorporated in proteoliposomes demonstrated a higher pKa of the M state accumulation compared to that of the wild-type ESR. Large negative electrogenic phases and an increase in the relative amplitude of kinetic components in the microsecond time range in the kinetics of membrane potential generation of ESR-Cherry and ESR-Trx indicate a decrease in the efficiency of transmembrane proton transport. On the contrary, Caf-ESR demonstrates a native-like kinetics of membrane potential generation and the corresponding electrogenic stages. Our experiments show that the hybrid with Caf1M promotes the unidirectional orientation of ESR in proteoliposomes.
Collapse
Affiliation(s)
- Lada E Petrovskaya
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Ul. Miklukho-Maklaya, 16/10, 117997 Moscow, Russia
| | - Evgeniy P Lukashev
- Department of Biology, Lomonosov Moscow State University, Leninskie Gory, 1, 119234 Moscow, Russia
| | - Mahir D Mamedov
- Belozersky Institute of Physical-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Elena A Kryukova
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Ul. Miklukho-Maklaya, 16/10, 117997 Moscow, Russia
| | - Sergei P Balashov
- Department of Physiology and Biophysics, University of California, Irvine, CA 92697, USA
| | - Dmitry A Dolgikh
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Ul. Miklukho-Maklaya, 16/10, 117997 Moscow, Russia
- Department of Biology, Lomonosov Moscow State University, Leninskie Gory, 1, 119234 Moscow, Russia
| | - Andrei B Rubin
- Department of Biology, Lomonosov Moscow State University, Leninskie Gory, 1, 119234 Moscow, Russia
| | - Mikhail P Kirpichnikov
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Ul. Miklukho-Maklaya, 16/10, 117997 Moscow, Russia
- Department of Biology, Lomonosov Moscow State University, Leninskie Gory, 1, 119234 Moscow, Russia
| | - Sergey A Siletsky
- Belozersky Institute of Physical-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
| |
Collapse
|
4
|
Zheng X, Fan H, Song Z, Cheng P, Jiang H, Shi W, Xiao C, Wang J, Li Q, Yin G, Zhao X. Immobilized beta 2-adrenergic receptor: A powerful chromatographic platform for drug discovery and evaluation of drug-like property for natural products. J Chromatogr A 2021; 1659:462635. [PMID: 34731755 DOI: 10.1016/j.chroma.2021.462635] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 10/08/2021] [Accepted: 10/18/2021] [Indexed: 01/19/2023]
Abstract
Drug discovery based on natural products like medicinal herbs remains challenging due to the technique limitations for rapidly screening and validating leads. To address the challenges, we employ the immobilized β2- adrenergic recepotor (β2-AR), an identified target of asthma, as the stationary phase in chromatographic column to screen compounds extracted from Stemonae Radix, Playtycodonis Radix, and Glycyrrhizae Radix et Rhizoma. To analyze binding properties of the extracted compounds to the immobilized receptors, we measured their retention behavior in the receptor chromatography and compared with six clinical asthma drugs. We identified tuberostemonine, platycodin D, and glycyrrhizic acid as the potential leads against asthma by our β2-AR chromatography coupled with mass spectrum (MS). The association constants of the three compounds to β2-AR were 2.85 × 10-5, 2.55 × 10-4, and 4.07 × 10-6 M with the dissociation rate constants of 6.91 ± 0.35, 11.88 ± 0.60, and 9.49 ± 0.64 min-1, respectively. Tuberostemonine, a pentacyclic Stemona alkaloids, presented the most optimum values of binding efficiency index (BEI) and surface efficiency index (SEI) as close to the diagonal of SEI-BEI optimization plane when it is compared with platycodin D, glycyrrhizic and the six clinical drugs. Our results suggest that tuberostemonine is a promising natural product to be developed for treating asthma because it exhibits better drug-like binding properties to β2-AR than the clinical drugs. As such, we demonstrate a chromatographic strategy to identify bioactive natural products based on the β2-AR immobilization, which can be widely adopted to screen natural products from mixture of herbal extracts.
Collapse
Affiliation(s)
- Xinxin Zheng
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Hushuai Fan
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Ze Song
- The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Peixuan Cheng
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Hongmei Jiang
- The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Wenhua Shi
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Chaoni Xiao
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Jing Wang
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Qian Li
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Guowei Yin
- The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China.
| | - Xinfeng Zhao
- College of Life Sciences, Northwest University, Xi'an 710069, China.
| |
Collapse
|
5
|
Abiko LA, Rogowski M, Gautier A, Schertler G, Grzesiek S. Efficient production of a functional G protein-coupled receptor in E. coli for structural studies. JOURNAL OF BIOMOLECULAR NMR 2021; 75:25-38. [PMID: 33501610 PMCID: PMC7897205 DOI: 10.1007/s10858-020-00354-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 12/08/2020] [Indexed: 05/22/2023]
Abstract
G protein-coupled receptors (GPCRs) are transmembrane signal transducers which regulate many key physiological process. Since their discovery, their analysis has been limited by difficulties in obtaining sufficient amounts of the receptors in high-quality, functional form from heterologous expression hosts. Albeit highly attractive because of its simplicity and the ease of isotope labeling for NMR studies, heterologous expression of functional GPCRs in E. coli has proven particularly challenging due to the absence of the more evolved protein expression and folding machinery of higher eukaryotic hosts. Here we first give an overview on the previous strategies for GPCR E. coli expression and then describe the development of an optimized robust protocol for the E. coli expression and purification of two mutants of the turkey β1-adrenergic receptor (β1AR) uniformly or selectively labeled in 15N or 2H,15N. These mutants had been previously optimized for thermal stability using insect cell expression and used successfully in crystallographic and NMR studies. The same sequences were then used for E. coli expression. Optimization of E. coli expression was achieved by a quantitative analysis of losses of receptor material at each step of the solubilization and purification procedure. Final yields are 0.2-0.3 mg receptor per liter culture. Whereas both expressed mutants are well folded and competent for orthosteric ligand binding, the less stable YY-β1AR mutant also comprises the two native tyrosines Y5.58 and Y7.53, which enable G protein binding. High-quality 1H-15N TROSY spectra were obtained for E. coli-expressed YY-β1AR in three different functional states (antagonist, agonist, and agonist + G protein-mimicking nanobody-bound), which are identical to spectra obtained of the same forms of the receptor expressed in insect cells. NdeI and AgeI restriction sites introduced into the expression plasmid allow for the easy replacement of the receptor gene by other GPCR genes of interest, and the provided quantitative workflow analysis may guide the respective adaptation of the purification protocol.
Collapse
Affiliation(s)
- Layara Akemi Abiko
- Focal Area Structural Biology and Biophysics, Biozentrum, University of Basel, 4056, Basel, Switzerland.
| | - Marco Rogowski
- Focal Area Structural Biology and Biophysics, Biozentrum, University of Basel, 4056, Basel, Switzerland
| | - Antoine Gautier
- Focal Area Structural Biology and Biophysics, Biozentrum, University of Basel, 4056, Basel, Switzerland
- Paul Scherrer Institute, 5232, Villigen, Switzerland
| | | | - Stephan Grzesiek
- Focal Area Structural Biology and Biophysics, Biozentrum, University of Basel, 4056, Basel, Switzerland.
| |
Collapse
|
6
|
Wiseman DN, Otchere A, Patel JH, Uddin R, Pollock NL, Routledge SJ, Rothnie AJ, Slack C, Poyner DR, Bill RM, Goddard AD. Expression and purification of recombinant G protein-coupled receptors: A review. Protein Expr Purif 2020; 167:105524. [PMID: 31678667 PMCID: PMC6983937 DOI: 10.1016/j.pep.2019.105524] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 10/28/2019] [Accepted: 10/29/2019] [Indexed: 01/15/2023]
Abstract
Given their extensive role in cell signalling, GPCRs are significant drug targets; despite this, many of these receptors have limited or no available prophylaxis. Novel drug design and discovery significantly rely on structure determination, of which GPCRs are typically elusive. Progress has been made thus far to produce sufficient quantity and quality of protein for downstream analysis. As such, this review highlights the systems available for recombinant GPCR expression, with consideration of their advantages and disadvantages, as well as examples of receptors successfully expressed in these systems. Additionally, an overview is given on the use of detergents and the styrene maleic acid (SMA) co-polymer for membrane solubilisation, as well as purification techniques.
Collapse
Affiliation(s)
- Daniel N Wiseman
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham, B4 7ET, UK.
| | - Abigail Otchere
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham, B4 7ET, UK.
| | - Jaimin H Patel
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham, B4 7ET, UK.
| | - Romez Uddin
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham, B4 7ET, UK.
| | | | - Sarah J Routledge
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham, B4 7ET, UK.
| | - Alice J Rothnie
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham, B4 7ET, UK.
| | - Cathy Slack
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham, B4 7ET, UK.
| | - David R Poyner
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham, B4 7ET, UK.
| | - Roslyn M Bill
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham, B4 7ET, UK.
| | - Alan D Goddard
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham, B4 7ET, UK.
| |
Collapse
|
7
|
Lama R, Pereiro P, Novoa B, Coll J. Sea Bass Immunization to Downsize the Betanodavirus Protein Displayed in the Surface of Inactivated Repair-Less Bacteria. Vaccines (Basel) 2019; 7:E94. [PMID: 31434322 PMCID: PMC6789578 DOI: 10.3390/vaccines7030094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/15/2019] [Accepted: 08/16/2019] [Indexed: 01/20/2023] Open
Abstract
: This work describes immunization of European sea bass (Dicentrarchus labrax) juveniles against viral nervous necrosis virus (VNNV), a betanodavirus causing worldwide mortalities in many fish species. Protection was obtained with the so-called spinycterin vehicles consisting of irreversibly DNA-damaged DNA-repair-less Escherichia coli displaying at their surface a downsized VNNV coat antigen. In this work we have i) maximized bacterial expression levels by downsizing the coat protein of VNNV to a fragment (frgC91-220) containing most of its previously determined antigenicity, ii) developed a scalable autoinduction culture media for E.coli based in soy-bean rather than in casein hydrolysates, iii) enriched surface expression by screening different anchors from several prokaryotic sources (anchor + frgC91-220 recombinant products), iv) preserved frgC91-220 antigenicity by inactivating bacteria by irreversible DNA-damage by means of Ciprofloxacin, and v) increased safety using a repair-less E.coli strain as chassis for the spinycterins. These spinycterins protected fish against VNNV challenge with partial (Nmistic + frgC91-220) or total (YBEL + frgC91-220) levels of protection, in contrast to fish immunized with frgC91-220 spinycterins. The proposed spinycterin platform has high levels of environmental safety and cost effectiveness and required no adjuvants, thus providing potential to further develop VNNV vaccines for sustainable aquaculture.
Collapse
Affiliation(s)
- Raquel Lama
- Institute of Marine Research (IIM). Spanish National Research Council (CSIC), Eduardo Cabello 6, 36208 Vigo, Spain
| | | | - Beatriz Novoa
- Institute of Marine Research (IIM). Spanish National Research Council (CSIC), Eduardo Cabello 6, 36208 Vigo, Spain
| | - Julio Coll
- National Institute for Agricultural and Food Research and Technology (INIA), Biotechnology Department, La Coruña road, 28040 Madrid, Spain.
| |
Collapse
|
8
|
The effect of the chromophoric group modification on the optical properties of retinal proteins. MENDELEEV COMMUNICATIONS 2018. [DOI: 10.1016/j.mencom.2018.07.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
9
|
Saladi SM, Javed N, Müller A, Clemons WM. A statistical model for improved membrane protein expression using sequence-derived features. J Biol Chem 2018; 293:4913-4927. [PMID: 29378850 PMCID: PMC5880134 DOI: 10.1074/jbc.ra117.001052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 01/22/2018] [Indexed: 11/06/2022] Open
Abstract
The heterologous expression of integral membrane proteins (IMPs) remains a major bottleneck in the characterization of this important protein class. IMP expression levels are currently unpredictable, which renders the pursuit of IMPs for structural and biophysical characterization challenging and inefficient. Experimental evidence demonstrates that changes within the nucleotide or amino acid sequence for a given IMP can dramatically affect expression levels, yet these observations have not resulted in generalizable approaches to improve expression levels. Here, we develop a data-driven statistical predictor named IMProve that, using only sequence information, increases the likelihood of selecting an IMP that expresses in Escherichia coli The IMProve model, trained on experimental data, combines a set of sequence-derived features resulting in an IMProve score, where higher values have a higher probability of success. The model is rigorously validated against a variety of independent data sets that contain a wide range of experimental outcomes from various IMP expression trials. The results demonstrate that use of the model can more than double the number of successfully expressed targets at any experimental scale. IMProve can immediately be used to identify favorable targets for characterization. Most notably, IMProve demonstrates for the first time that IMP expression levels can be predicted directly from sequence.
Collapse
Affiliation(s)
- Shyam M Saladi
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125
| | - Nauman Javed
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125
| | - Axel Müller
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125
| | - William M Clemons
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125.
| |
Collapse
|
10
|
Alves NS, Astrinidis SA, Eisenhardt N, Sieverding C, Redolfi J, Lorenz M, Weberruss M, Moreno-Andrés D, Antonin W. MISTIC-fusion proteins as antigens for high quality membrane protein antibodies. Sci Rep 2017; 7:41519. [PMID: 28148968 PMCID: PMC5288655 DOI: 10.1038/srep41519] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 12/21/2016] [Indexed: 02/08/2023] Open
Abstract
Lack of high-quality antibodies against transmembrane proteins is a widely recognized hindrance in biomedical and cell biological research. Here we present a robust pipeline for the generation of polyclonal antibodies employing full-length membrane proteins as immunogens to overcome this "antibody bottleneck". We express transmembrane proteins fused to a MISTIC fragment that enhances expression of eukaryotic membrane proteins in E. coli. Purified membrane proteins are used as immunogen for rabbit injection employing standard immunizing protocols. The raised antibodies against membrane proteins of the endoplasmic reticulum and the nuclear envelope, which we use as test cases, function in a wide range of applications and are superior to ones produced against soluble domains as immunogens.
Collapse
Affiliation(s)
- Natalia Silva Alves
- Friedrich Miescher Laboratory of the Max Planck Society, Spemannstraße 39, 72076 Tübingen, Germany
| | - Susanne Adina Astrinidis
- Friedrich Miescher Laboratory of the Max Planck Society, Spemannstraße 39, 72076 Tübingen, Germany
| | - Nathalie Eisenhardt
- Friedrich Miescher Laboratory of the Max Planck Society, Spemannstraße 39, 72076 Tübingen, Germany
| | - Cornelia Sieverding
- Friedrich Miescher Laboratory of the Max Planck Society, Spemannstraße 39, 72076 Tübingen, Germany
| | - Josef Redolfi
- Friedrich Miescher Laboratory of the Max Planck Society, Spemannstraße 39, 72076 Tübingen, Germany
| | - Michael Lorenz
- Friedrich Miescher Laboratory of the Max Planck Society, Spemannstraße 39, 72076 Tübingen, Germany
| | - Marion Weberruss
- Friedrich Miescher Laboratory of the Max Planck Society, Spemannstraße 39, 72076 Tübingen, Germany
| | - Daniel Moreno-Andrés
- Friedrich Miescher Laboratory of the Max Planck Society, Spemannstraße 39, 72076 Tübingen, Germany
| | - Wolfram Antonin
- Friedrich Miescher Laboratory of the Max Planck Society, Spemannstraße 39, 72076 Tübingen, Germany
| |
Collapse
|
11
|
Ge B, Wang M, Li J, Liu J, Huang F. Maltose binding protein facilitates functional production of engineered human chemokine receptor 3 in Escherichia coli. Process Biochem 2015. [DOI: 10.1016/j.procbio.2014.12.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
12
|
Marino J, Bordag N, Keller S, Zerbe O. Mistic's membrane association and its assistance in overexpression of a human GPCR are independent processes. Protein Sci 2014; 24:38-48. [PMID: 25297828 DOI: 10.1002/pro.2582] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 09/15/2014] [Accepted: 10/06/2014] [Indexed: 01/19/2023]
Abstract
The interaction of the Bacillus subtilis protein Mistic with the bacterial membrane and its role in promoting the overexpression of other membrane proteins are still matters of debate. In this study, we aimed to determine whether individual helical fragments of Mistic are sufficient for its interaction with membranes in vivo and in vitro. To this end, fragments encompassing each of Mistic's helical segments and combinations of them were produced as GFP-fusions, and their cellular localization was studied in Escherichia coli. Furthermore, peptides corresponding to the four helical fragments were synthesized by solid-phase peptide synthesis, and their ability to acquire secondary structure in a variety of lipids and detergents was studied by circular dichroism spectroscopy. Both types of experiments demonstrate that the third helical fragment of Mistic interacts only with LDAO micelles but does not partition into lipid bilayers. Interestingly, the other three helices interact with membranes in vivo and in vitro. Nevertheless, all of these short sequences can replace full-length Mistic as N-terminal fusions to achieve overexpression of a human G-protein-coupled receptor in E. coli, although with different effects on quantity and quality of the protein produced. A bioinformatic analysis of the Mistic family expanded the number of homologs from 4 to 20, including proteins outside the genus Bacillus. This information allowed us to discover a highly conserved Shine-Dalgarno sequence in the operon mstX-yugO that is important for downstream translation of the potassium ion channel yugO.
Collapse
Affiliation(s)
- Jacopo Marino
- Department of Chemistry, University of Zürich, Switzerland
| | | | | | | |
Collapse
|
13
|
Grouzdev DS, Dziuba MV, Kurek DV, Ovchinnikov AI, Zhigalova NA, Kuznetsov BB, Skryabin KG. Optimized method for preparation of IgG-binding bacterial magnetic nanoparticles. PLoS One 2014; 9:e109914. [PMID: 25333971 PMCID: PMC4198182 DOI: 10.1371/journal.pone.0109914] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 08/28/2014] [Indexed: 11/19/2022] Open
Abstract
In this study, the optimized method for designing IgG-binding magnetosomes based on integration of IgG-binding fusion proteins into magnetosome membrane in vitro is presented. Fusion proteins Mbb and Mistbb consisting of magnetosome membrane protein MamC and membrane associating protein Mistic from Bacillus subtilis as anchors and BB-domains of Staphylococcus aureus protein A as IgG-binding region were used. With Response Surface Methodology (RSM) the highest level of proteins integration into magnetosome membrane was achieved under the following parameters: pH 8.78, without adding NaCl and 55 s of vortexing for Mbb; pH 9.48, 323 mM NaCl and 55 s of vortexing for Mistbb. Modified magnetosomes with Mbb and Mistbb displayed on their surface demonstrated comparable levels of IgG-binding activity, suggesting that both proteins could be efficiently used as anchor molecules. We also demonstrated that such modified magnetosomes are stable in PBS buffer during at least two weeks. IgG-binding magnetosomes obtained by this approach could serve as a multifunctional platform for displaying various types of antibodies.
Collapse
Affiliation(s)
- Denis S. Grouzdev
- Faculty of Biology, Moscow State University, Moscow, Russia
- Centre Bioengineering, Russian Academy of Sciences, Moscow, Russia
| | - Marina V. Dziuba
- Centre Bioengineering, Russian Academy of Sciences, Moscow, Russia
| | - Denis V. Kurek
- Centre Bioengineering, Russian Academy of Sciences, Moscow, Russia
| | | | | | | | | |
Collapse
|
14
|
Expression and functional characterization of membrane-integrated mammalian corticotropin releasing factor receptors 1 and 2 in Escherichia coli. PLoS One 2014; 9:e84013. [PMID: 24465390 PMCID: PMC3894963 DOI: 10.1371/journal.pone.0084013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 11/19/2013] [Indexed: 11/19/2022] Open
Abstract
Corticotropin-Releasing Factor Receptors (CRFRs) are class B1 G-protein-coupled receptors, which bind peptides of the corticotropin releasing factor family and are key mediators in the stress response. In order to dissect the receptors' binding specificity and enable structural studies, full-length human CRFR1α and mouse CRFR2β as well as fragments lacking the N-terminal extracellular domain, were overproduced in E. coli. The characteristics of different CRFR2β-PhoA gene fusion products expressed in bacteria were found to be in agreement with the predicted ones in the hepta-helical membrane topology model. Recombinant histidine-tagged CRFR1α and CRFR2β expression levels and bacterial subcellular localization were evaluated by cell fractionation and Western blot analysis. Protein expression parameters were assessed, including the influence of E. coli bacterial hosts, culture media and the impact of either PelB or DsbA signal peptide. In general, the large majority of receptor proteins became inserted in the bacterial membrane. Across all experimental conditions significantly more CRFR2β product was obtained in comparison to CRFR1α. Following a detergent screen analysis, bacterial membranes containing CRFR1α and CRFR2β were best solubilized with the zwitterionic detergent FC-14. Binding of different peptide ligands to CRFR1α and CRFR2β membrane fractions were similar, in part, to the complex pharmacology observed in eukaryotic cells. We suggest that our E. coli expression system producing functional CRFRs will be useful for large-scale expression of these receptors for structural studies.
Collapse
|
15
|
Jacso T, Bardiaux B, Broecker J, Fiedler S, Baerwinkel T, Mainz A, Fink U, Vargas C, Oschkinat H, Keller S, Reif B. The Mechanism of Denaturation and the Unfolded State of the α-Helical Membrane-Associated Protein Mistic. J Am Chem Soc 2013; 135:18884-91. [DOI: 10.1021/ja408644f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Tomas Jacso
- Center
for Integrated Protein Science Munich, Department Chemie, Technische Universität München, Lichtenbergstraße 4, 85747 Garching, Germany
- Helmholtz-Zentrum
München, Deutsches Forschungszentrum für Gesundheit und Umwelt, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
- Leibniz-Institut für Molekulare Pharmakologie, Robert-Rössle-Straße 10, 13125 Berlin-Buch, Germany
| | - Benjamin Bardiaux
- Leibniz-Institut für Molekulare Pharmakologie, Robert-Rössle-Straße 10, 13125 Berlin-Buch, Germany
| | - Jana Broecker
- Molecular
Biophysics, University of Kaiserslautern, Erwin-Schrödinger-Straße
13, 67663 Kaiserslautern, Germany
| | - Sebastian Fiedler
- Molecular
Biophysics, University of Kaiserslautern, Erwin-Schrödinger-Straße
13, 67663 Kaiserslautern, Germany
| | - Tom Baerwinkel
- Center
for Integrated Protein Science Munich, Department Chemie, Technische Universität München, Lichtenbergstraße 4, 85747 Garching, Germany
- Helmholtz-Zentrum
München, Deutsches Forschungszentrum für Gesundheit und Umwelt, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Andi Mainz
- Center
for Integrated Protein Science Munich, Department Chemie, Technische Universität München, Lichtenbergstraße 4, 85747 Garching, Germany
- Leibniz-Institut für Molekulare Pharmakologie, Robert-Rössle-Straße 10, 13125 Berlin-Buch, Germany
| | - Uwe Fink
- Leibniz-Institut für Molekulare Pharmakologie, Robert-Rössle-Straße 10, 13125 Berlin-Buch, Germany
| | - Carolyn Vargas
- Molecular
Biophysics, University of Kaiserslautern, Erwin-Schrödinger-Straße
13, 67663 Kaiserslautern, Germany
| | - Hartmut Oschkinat
- Leibniz-Institut für Molekulare Pharmakologie, Robert-Rössle-Straße 10, 13125 Berlin-Buch, Germany
| | - Sandro Keller
- Molecular
Biophysics, University of Kaiserslautern, Erwin-Schrödinger-Straße
13, 67663 Kaiserslautern, Germany
| | - Bernd Reif
- Center
for Integrated Protein Science Munich, Department Chemie, Technische Universität München, Lichtenbergstraße 4, 85747 Garching, Germany
- Helmholtz-Zentrum
München, Deutsches Forschungszentrum für Gesundheit und Umwelt, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
- Leibniz-Institut für Molekulare Pharmakologie, Robert-Rössle-Straße 10, 13125 Berlin-Buch, Germany
| |
Collapse
|
16
|
Bocharova OV, Urban AS, Nadezhdin KD, Bocharov EV, Arseniev AS. Bacterial and cell-free production of APP671-726 containing amyloid precursor protein transmembrane and metal-binding domains. BIOCHEMISTRY (MOSCOW) 2013; 78:1263-71. [DOI: 10.1134/s0006297913110060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
17
|
Xu Y, Kong J, Kong W. Improved membrane protein expression in Lactococcus lactis by fusion to Mistic. MICROBIOLOGY-SGM 2013; 159:1002-1009. [PMID: 23519161 DOI: 10.1099/mic.0.066621-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Difficulty overexpressing (eukaryotic) membrane proteins is generally considered as the major impediment in their structural and functional research. Lactococcus lactis possesses many properties ideal for membrane protein expression. In order to investigate membrane protein expression in L. lactis, we created a novel expression system by introducing Mistic, a short peptide previously identified in Bacillus subtilis, into L. lactis. The potential of this system was demonstrated in the overexpression of a eukaryotic membrane protein (pkjDes4) and a prokaryotic membrane protein (pkjLi), a newly isolated linoleate isomerase from Lactobacillus acidophilus. The expression levels reached up to 4.4 % and 45.2 % for pkjDes4 and pkjLi, respectively, which represented an exceptionally robust ability to overproduce membrane proteins. Moreover, the expressed pkjLi was functional, with its catalysing nature characterized for the first time in this species. Up to 0.852 mg ml(-1) conjugated linoleic acid was obtained during the linoleic acid conversion catalysed by the recombinant lactococcal strains. In summary, we established a membrane protein expression system in L. lactis and examined its functionality. Our results demonstrate that the Mistic chaperoning strategy can be efficiently applied to L. lactis hosts and show its extraordinary capacity to facilitate the high-yield production of intractable membrane proteins.
Collapse
Affiliation(s)
- Yi Xu
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong Province, China
| | - Jian Kong
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong Province, China
| | - Wentao Kong
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA.,State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong Province, China
| |
Collapse
|
18
|
Wiktor M, Morin S, Sass HJ, Kebbel F, Grzesiek S. Biophysical and structural investigation of bacterially expressed and engineered CCR5, a G protein-coupled receptor. JOURNAL OF BIOMOLECULAR NMR 2013; 55:79-95. [PMID: 23229639 DOI: 10.1007/s10858-012-9688-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 11/22/2012] [Indexed: 06/01/2023]
Abstract
The chemokine receptor CCR5 belongs to the class of G protein-coupled receptors. Besides its role in leukocyte trafficking, it is also the major HIV-1 coreceptor and hence a target for HIV-1 entry inhibitors. Here, we report Escherichia coli expression and a broad range of biophysical studies on E. coli-produced CCR5. After systematic screening and optimization, we obtained 10 mg of purified, detergent-solubilized, folded CCR5 from 1L culture in a triply isotope-labeled ((2)H/(15)N/(13)C) minimal medium. Thus the material is suitable for NMR spectroscopic studies. The expected α-helical secondary structure content is confirmed by circular dichroism spectroscopy. The solubilized CCR5 is monodisperse and homogeneous as judged by transmission electron microscopy. Interactions of CCR5 with its ligands, RANTES and MIP-1β were assessed by surface plasmon resonance yielding K(D) values in the nanomolar range. Using size exclusion chromatography, stable monomeric CCR5 could be isolated. We show that cysteine residues affect both the yield and oligomer distribution of CCR5. HSQC spectra suggest that the transmembrane domains of CCR5 are in equilibrium between several conformations. In addition we present a model of CCR5 based on the crystal structure of CXCR4 as a starting point for protein engineering.
Collapse
Affiliation(s)
- Maciej Wiktor
- Focal Area Structural Biology and Biophysics, Biozentrum, University of Basel, Klingelbergstrasse 50/70, 4056 Basel, Switzerland
| | | | | | | | | |
Collapse
|
19
|
Öberg F, Hedfalk K. Recombinant production of the human aquaporins in the yeastPichia pastoris(Invited Review). Mol Membr Biol 2012; 30:15-31. [DOI: 10.3109/09687688.2012.665503] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
20
|
Sopitthummakhun K, Thongpanchang C, Vilaivan T, Yuthavong Y, Chaiyen P, Leartsakulpanich U. Plasmodium serine hydroxymethyltransferase as a potential anti-malarial target: inhibition studies using improved methods for enzyme production and assay. Malar J 2012; 11:194. [PMID: 22691309 PMCID: PMC3502260 DOI: 10.1186/1475-2875-11-194] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 05/30/2012] [Indexed: 11/21/2022] Open
Abstract
Background There is an urgent need for the discovery of new anti-malarial drugs. Thus, it is essential to explore different potential new targets that are unique to the parasite or that are required for its viability in order to develop new interventions for treating the disease. Plasmodium serine hydroxymethyltransferase (SHMT), an enzyme in the dTMP synthesis cycle, is a potential target for such new drugs, but convenient methods for producing and assaying the enzyme are still lacking, hampering the ability to screen inhibitors. Methods Production of recombinant Plasmodium falciparum SHMT (PfSHMT) and Plasmodium vivax SHMT (PvSHMT), using auto-induction media, were compared to those using the conventional Luria Bertani medium with isopropyl thio-β-D-galactoside (LB-IPTG) induction media. Plasmodium SHMT activity, kinetic parameters, and response to inhibitors were measured spectrophotometrically by coupling the reaction to that of 5,10-methylenetetrahydrofolate dehydrogenase (MTHFD). The identity of the intermediate formed upon inactivation of Plasmodium SHMTs by thiosemicarbazide was investigated by spectrophotometry, high performance liquid chromatography (HPLC), and liquid chromatography-mass spectrometry (LC-MS). The active site environment of Plasmodium SHMT was probed based on changes in the fluorescence emission spectrum upon addition of amino acids and folate. Results Auto-induction media resulted in a two to three-fold higher yield of Pf- and PvSHMT (7.38 and 29.29 mg/L) compared to that produced in cells induced in LB-IPTG media. A convenient spectrophotometric activity assay coupling Plasmodium SHMT and MTHFD gave similar kinetic parameters to those previously obtained from the anaerobic assay coupling SHMT and 5,10-methylenetetrahydrofolate reductase (MTHFR); thus demonstrating the validity of the new assay procedure. The improved method was adopted to screen for Plasmodium SHMT inhibitors, of which some were originally designed as inhibitors of malarial dihydrofolate reductase. Plasmodium SHMT was slowly inactivated by thiosemicarbazide and formed a covalent intermediate, PLP-thiosemicarbazone. Conclusions Auto-induction media offers a cost-effective method for the production of Plasmodium SHMTs and should be applicable for other Plasmodium enzymes. The SHMT-MTHFD coupled assay is equivalent to the SHMT-MTHFR coupled assay, but is more convenient for inhibitor screening and other studies of the enzyme. In addition to inhibitors of malarial SHMT, the development of species-specific, anti-SHMT inhibitors is plausible due to the presence of differential active sites on the Plasmodium enzymes.
Collapse
Affiliation(s)
- Kittipat Sopitthummakhun
- Department of Biochemistry and Center of Excellence in Protein Structure & Function, Faculty of Science, Mahidol University, Rama 6 Road Bangkok 10400, Thailand
| | | | | | | | | | | |
Collapse
|
21
|
Gerasimov AS, Zeinalov OA, El’darov MA, Shul’ga AA. Biosynthesis of human β2-adrenergic receptor in methylotrophic yeast Pichia pastoris and its purification. Mol Biol 2012. [DOI: 10.1134/s0026893312020057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
22
|
Bernaudat F, Frelet-Barrand A, Pochon N, Dementin S, Hivin P, Boutigny S, Rioux JB, Salvi D, Seigneurin-Berny D, Richaud P, Joyard J, Pignol D, Sabaty M, Desnos T, Pebay-Peyroula E, Darrouzet E, Vernet T, Rolland N. Heterologous expression of membrane proteins: choosing the appropriate host. PLoS One 2011; 6:e29191. [PMID: 22216205 PMCID: PMC3244453 DOI: 10.1371/journal.pone.0029191] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Accepted: 11/22/2011] [Indexed: 11/19/2022] Open
Abstract
Background Membrane proteins are the targets of 50% of drugs, although they only represent 1% of total cellular proteins. The first major bottleneck on the route to their functional and structural characterisation is their overexpression; and simply choosing the right system can involve many months of trial and error. This work is intended as a guide to where to start when faced with heterologous expression of a membrane protein. Methodology/Principal Findings The expression of 20 membrane proteins, both peripheral and integral, in three prokaryotic (E. coli, L. lactis, R. sphaeroides) and three eukaryotic (A. thaliana, N. benthamiana, Sf9 insect cells) hosts was tested. The proteins tested were of various origins (bacteria, plants and mammals), functions (transporters, receptors, enzymes) and topologies (between 0 and 13 transmembrane segments). The Gateway system was used to clone all 20 genes into appropriate vectors for the hosts to be tested. Culture conditions were optimised for each host, and specific strategies were tested, such as the use of Mistic fusions in E. coli. 17 of the 20 proteins were produced at adequate yields for functional and, in some cases, structural studies. We have formulated general recommendations to assist with choosing an appropriate system based on our observations of protein behaviour in the different hosts. Conclusions/Significance Most of the methods presented here can be quite easily implemented in other laboratories. The results highlight certain factors that should be considered when selecting an expression host. The decision aide provided should help both newcomers and old-hands to select the best system for their favourite membrane protein.
Collapse
Affiliation(s)
- Florent Bernaudat
- Institut de Biologie Structurale Jean-Pierre Ebel, CEA, Grenoble, France.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Lyukmanova EN, Shenkarev ZO, Khabibullina NF, Kopeina GS, Shulepko MA, Paramonov AS, Mineev KS, Tikhonov RV, Shingarova LN, Petrovskaya LE, Dolgikh DA, Arseniev AS, Kirpichnikov MP. Lipid-protein nanodiscs for cell-free production of integral membrane proteins in a soluble and folded state: comparison with detergent micelles, bicelles and liposomes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2011; 1818:349-58. [PMID: 22056981 DOI: 10.1016/j.bbamem.2011.10.020] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 10/03/2011] [Accepted: 10/18/2011] [Indexed: 11/26/2022]
Abstract
Production of integral membrane proteins (IMPs) in a folded state is a key prerequisite for their functional and structural studies. In cell-free (CF) expression systems membrane mimicking components could be added to the reaction mixture that promotes IMP production in a soluble form. Here lipid-protein nanodiscs (LPNs) of different lipid compositions (DMPC, DMPG, POPC, POPC/DOPG) have been compared with classical membrane mimicking media such as detergent micelles, lipid/detergent bicelles and liposomes by their ability to support CF synthesis of IMPs in a folded and soluble state. Three model membrane proteins of different topology were used: homodimeric transmembrane (TM) domain of human receptor tyrosine kinase ErbB3 (TM-ErbB3, 1TM); voltage-sensing domain of K(+) channel KvAP (VSD, 4TM); and bacteriorhodopsin from Exiguobacterium sibiricum (ESR, 7TM). Structural and/or functional properties of the synthesized proteins were analyzed. LPNs significantly enhanced synthesis of the IMPs in a soluble form regardless of the lipid composition. A partial disintegration of LPNs composed of unsaturated lipids was observed upon co-translational IMP incorporation. Contrary to detergents the nanodiscs resulted in the synthesis of ~80% active ESR and promoted correct folding of the TM-ErbB3. None of the tested membrane mimetics supported CF synthesis of correctly folded VSD, and the protocol of the domain refolding was developed. The use of LPNs appears to be the most promising approach to CF production of IMPs in a folded state. NMR analysis of (15)N-Ile-TM-ErbB3 co-translationally incorporated into LPNs shows the great prospects of this membrane mimetics for structural studies of IMPs produced by CF systems.
Collapse
Affiliation(s)
- E N Lyukmanova
- Russian Academy of Sciences, Moscow, Russian Federation.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Öberg F, Sjöhamn J, Conner MT, Bill RM, Hedfalk K. Improving recombinant eukaryotic membrane protein yields inPichia pastoris: The importance of codon optimization and clone selection. Mol Membr Biol 2011; 28:398-411. [DOI: 10.3109/09687688.2011.602219] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
25
|
Deniaud A, Bernaudat F, Frelet-Barrand A, Juillan-Binard C, Vernet T, Rolland N, Pebay-Peyroula E. Expression of a chloroplast ATP/ADP transporter in E. coli membranes: behind the Mistic strategy. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2011; 1808:2059-66. [PMID: 21550334 DOI: 10.1016/j.bbamem.2011.04.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 04/11/2011] [Accepted: 04/15/2011] [Indexed: 10/18/2022]
Abstract
Eukaryotic membrane protein expression is still a major bottleneck for structural studies. Production in E. coli often leads to low expression level and/or aggregated proteins. In the last decade, strategies relying on new fusion protein expression revealed promising results. Fusion with the amphipatic Mistic protein has been described to favor expression in E. coli membranes. Although, this approach has already been reported for a few membrane proteins, little is known about the activity of the fused proteins. We used this strategy and obtained high expression levels of a chloroplast ATP/ADP transporter from A. thaliana (NTT1) and characterized its transport properties. NTT1 fused to Mistic has a very low transport activity which can be recovered after in vivo Mistic fusion cleavage. Moreover, detailed molecular characterization of purified NTT1 mature form, NTT1 fused to Mistic or NTT1 cleaved-off from this fusion highlights the correct fold of the latter one. Therefore, considering the higher quantity of purified NTT1 mature form obtained via the Mistic fusion approach, this is a valuable strategy for obtaining quantities of pure and active proteins that are adequate for structural studies.
Collapse
Affiliation(s)
- Aurélien Deniaud
- CEA, Institut de Biologie Structurale Jean-Pierre Ebel, 41 rue Jules Horowitz, F-38027 Grenoble, France
| | | | | | | | | | | | | |
Collapse
|