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Rieth MD. A new lipid complex has micelle and bicelle-like properties. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2022; 1864:183952. [PMID: 35508225 DOI: 10.1016/j.bbamem.2022.183952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/19/2022] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Affiliation(s)
- Monica D Rieth
- Department of Chemistry, 44 S. Circle Dr., Edwardsville, IL 62026, USA; Department of Chemistry, Lehigh University, 6 E. Packer Ave., Bethlehem, PA 18015, USA.
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2
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Zhao F, Zhu Z, Xie L, Luo F, Wang H, Qiu Y, Luo W, Zhou F, Xue D, Zhang Z, Hua T, Wu D, Liu Z, Le Z, Tao H. Two‐Dimensional Detergent Expansion Strategy for Membrane Protein Studies. Chemistry 2022; 28:e202201388. [DOI: 10.1002/chem.202201388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Fei Zhao
- iHuman Institute ShanghaiTech University Shanghai 201210 China
| | - Zhihao Zhu
- College of Chemistry Nanchang University Nanchang, Jiangxi Province 330031 China
| | - Linshan Xie
- iHuman Institute ShanghaiTech University Shanghai 201210 China
- School of Life Science and Technology ShanghaiTech University Shanghai 201210 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Feng Luo
- iHuman Institute ShanghaiTech University Shanghai 201210 China
| | - Huixia Wang
- iHuman Institute ShanghaiTech University Shanghai 201210 China
| | - Yanli Qiu
- iHuman Institute ShanghaiTech University Shanghai 201210 China
- School of Life Science and Technology ShanghaiTech University Shanghai 201210 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Weiling Luo
- iHuman Institute ShanghaiTech University Shanghai 201210 China
- School of Life Science and Technology ShanghaiTech University Shanghai 201210 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Fang Zhou
- iHuman Institute ShanghaiTech University Shanghai 201210 China
| | - Dongxiang Xue
- iHuman Institute ShanghaiTech University Shanghai 201210 China
| | - Zhihui Zhang
- iHuman Institute ShanghaiTech University Shanghai 201210 China
| | - Tian Hua
- iHuman Institute ShanghaiTech University Shanghai 201210 China
- School of Life Science and Technology ShanghaiTech University Shanghai 201210 China
| | - Dong Wu
- iHuman Institute ShanghaiTech University Shanghai 201210 China
| | - Zhi‐Jie Liu
- iHuman Institute ShanghaiTech University Shanghai 201210 China
- School of Life Science and Technology ShanghaiTech University Shanghai 201210 China
| | - Zhiping Le
- College of Chemistry Nanchang University Nanchang, Jiangxi Province 330031 China
| | - Houchao Tao
- iHuman Institute ShanghaiTech University Shanghai 201210 China
- Shanghai Frontiers Science Center of TCM Chemical Biology Innovation Research Institute of Traditional Chinese Medicine Shanghai University of Traditional Chinese Medicine Shanghai 201203 China
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Ceccon A, Kubatova N, Louis JM, Clore GM, Tugarinov V. Global Dynamics of a Protein on the Surface of Anisotropic Lipid Nanoparticles Derived from Relaxation-Based NMR Spectroscopy. J Phys Chem B 2022; 126:5646-5654. [PMID: 35877206 DOI: 10.1021/acs.jpcb.2c03519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The global motions of ubiquitin, a model protein, on the surface of anisotropically tumbling 1-palmitoyl-2-oleoyl-sn-glycero-3-phospho-(1'-rac-glycerol) (POPG):1,2-dihexanoyl-sn-glycero-3-phosphocholine (DHPC) bicelles are described. The shapes of POPG:DHPC bicelles prepared with high molar ratios q of POPG to DHPC can be approximated by prolate ellipsoids, with the ratio of ellipsoid dimensions and dimensions themselves increasing with higher values of q. Adaptation of the nuclear magnetic resonance (NMR) relaxation-based approach that we previously developed for interactions of ubiquitin with spherical POPG liposomes (Ceccon, A. J. Am. Chem. Soc. 2016, 138, 5789-5792) allowed us to quantitatively analyze the variation in lifetime line broadening of NMR signals (ΔR2) measured for ubiquitin in the presence of q = 2 POPG:DHPC bicelles and the associated transverse spin relaxation rates (R2,B) of bicelle-bound ubiquitin. Ubiquitin, transiently bound to POPG:DHPC bicelles, undergoes internal rotation about an axis orthogonal to the surface of the bicelle and perpendicular to the principal axis of its rotational diffusion tensor on the low microsecond time scale (∼3 μs), while the rotation axis itself wobbles in a cone on a submicrosecond time scale (≤ 500 ns).
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Affiliation(s)
- Alberto Ceccon
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0520, United States
| | - Nina Kubatova
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0520, United States
| | - John M Louis
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0520, United States
| | - G Marius Clore
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0520, United States
| | - Vitali Tugarinov
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0520, United States
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Yang M, Luo W, Zhang W, Wang H, Xue D, Wu Y, Zhao S, Zhao F, Zheng X, Tao H. Ugi Reaction Mediated Detergent Assembly for Membrane Protein Studies. Chem Asian J 2022; 17:e202200372. [PMID: 35575910 DOI: 10.1002/asia.202200372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/16/2022] [Indexed: 11/11/2022]
Abstract
Despite the continuous efforts, the current repertoire of detergents is still far from sufficient for the biophysics studies of membrane proteins (MPs). Toward the rapid expansion of detergent diversity, we herein report a new strategy based on Ugi reaction mediated modular assembly. Structural varieties, including hydrophobic tails and hydrophilic heads, could be conveniently introduced from the multiple reaction components. New detergents then were comprehensively evaluated in the physical properties and preliminarily screened by the thermal stabilization for a transporter MsbA and a spectrum of G protein-coupled receptors (GPCRs). For the glucagon-like peptide-1 receptor (GLP-1R), a class B GPCR, detergent M-23-M finally stood out in a second evaluation for the maintenance of homogeneity and was further illustrated its application in the improvement of NMR study. Besides the promising utility in the MP study, the current results exhibit intriguing structural-physical relationship that would allow the guidance in the tuning of detergent properties in the future.
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Affiliation(s)
- Meifang Yang
- University of South China, Department of Pharmacy, CHINA
| | - Weiling Luo
- ShanghaiTech University, iHuman Institute, CHINA
| | - Wei Zhang
- ShanghaiTech University, iHuman Institute, CHINA
| | - Huixia Wang
- ShanghaiTech University, iHuman Institute, CHINA
| | | | - Yiran Wu
- ShanghaiTech University, iHuman Institute, CHINA
| | - Suwen Zhao
- ShanghaiTech University, iHuman Institute, CHINA
| | - Fei Zhao
- ShanghaiTech University, iHuman Institute, 230 Haike Road, 201210, Shanghai, CHINA
| | - Xing Zheng
- University of South China, Department of Pharmacy, CHINA
| | - Houchao Tao
- Shanghai University of Traditional Chinese Medicine, Shanghai Frontiers Science Center of TCM Chemical Biology, Room 2421, Building 2, 1200 Cailun Road, 230032, Shanghai, CHINA
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Zhang Y, Zhang X, Kong W, Wang S. Reconstitution of Caveolin-1 into Artificial Lipid Membrane: Characterization by Transmission Electron Microscopy and Solid-State Nuclear Magnetic Resonance. Molecules 2021; 26:molecules26206201. [PMID: 34684779 PMCID: PMC8539922 DOI: 10.3390/molecules26206201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/09/2021] [Accepted: 10/11/2021] [Indexed: 12/26/2022] Open
Abstract
Caveolin-1 (CAV1), a membrane protein that is necessary for the formation and maintenance of caveolae, is a promising drug target for the therapy of various diseases, such as cancer, diabetes, and liver fibrosis. The biology and pathology of caveolae have been widely investigated; however, very little information about the structural features of full-length CAV1 is available, as well as its biophysical role in reshaping the cellular membrane. Here, we established a method, with high reliability and reproducibility, for the expression and purification of CAV1. Amyloid-like properties of CAV1 and its C-terminal peptide CAV1(168-178) suggest a structural basis for the short linear CAV1 assemblies that have been recently observed in caveolin polyhedral cages in Escherichia coli (E. coli). Reconstitution of CAV1 into artificial lipid membranes induces a caveolae-like membrane curvature. Structural characterization of CAV1 in the membrane by solid-state nuclear magnetic resonance (ssNMR) indicate that it is largely α-helical, with very little β-sheet content. Its scaffolding domain adopts a α-helical structure as identified by chemical shift analysis of threonine (Thr). Taken together, an in vitro model was developed for the CAV1 structural study, which will further provide meaningful evidences for the design and screening of bioactive compounds targeting CAV1.
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Affiliation(s)
- Yanli Zhang
- Department of Pharmacy, Qilu Hospital of Shandong University, Cheeloo College of Medicine, Jinan 250012, China;
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| | - Xinyan Zhang
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| | - Wenru Kong
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China;
| | - Shuqi Wang
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China;
- Correspondence: ; Tel.: +86-0531-88382014
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Knepp ZJ, Ghaner A, Root KT. Purification and refolding protocol for cold-active recombinant esterase AaSGNH1 from Aphanizomenon flos-aquae expressed as insoluble inclusion bodies. Prep Biochem Biotechnol 2021; 52:394-403. [PMID: 34355672 DOI: 10.1080/10826068.2021.1952601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Microbial esterases are a highly desirable tool for numerous biosynthetic and biotechnological applications requiring ester bond cleavage. Once identified, microbial esterases are often produced recombinantly in Escherichia coli to enhance yield and ease of purification. In this study a polyhistidine-tagged SGNH esterase gene (AaSGNH1), originating from the cyanobacterium Aphanizomenon flos-aquae, was cloned into an over-expression plasmid and expressed in BL21(DE3) cells. The recombinant esterase enzyme was produced as inactive inclusion bodies which were insoluble in 8 M urea but readily solubilized by the detergent Empigen BB®. Crucially, the procurement of active enzyme required controlled removal of detergent during column chromatography and dialysis steps. The refolded esterase was characterized with respect to its ability to catalyze the cleavage of p-nitrophenol esters of different chain lengths (C2, C8, C16). In addition, the temperature and pH optima were determined and it was found that the enzyme was most active at low temperatures (5-15 °C) and under alkaline conditions (pH 8-10). It was found that the kinetic properties of AaSGNH1 were remarkably similar to other SGNH esterases described thereby validating that the protein was effectively refolded. Overall, this study provides a simple strategy for isolating cold-active recombinant esterase enzyme when expressed as inclusion bodies.
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Affiliation(s)
- Zachary J Knepp
- Department of Chemistry, Lock Haven University, Lock Haven, PA, USA
| | - Ashlea Ghaner
- Department of Chemistry, Lock Haven University, Lock Haven, PA, USA
| | - Kyle T Root
- Department of Chemistry, Lock Haven University, Lock Haven, PA, USA
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