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Abdelrahman A, Erchiqui F, Nedil M, Mohamed S. Enhancing Fluidic Polymeric Solutions' Physical Properties with Nano Metals and Graphene Additives. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Tange H, Ishibashi D, Nakagaki T, Taguchi Y, Kamatari YO, Ozawa H, Nishida N. Liquid-liquid phase separation of full-length prion protein initiates conformational conversion in vitro. J Biol Chem 2021; 296:100367. [PMID: 33545172 PMCID: PMC8289115 DOI: 10.1016/j.jbc.2021.100367] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 01/27/2021] [Accepted: 02/01/2021] [Indexed: 12/21/2022] Open
Abstract
Prion diseases are characterized by the accumulation of amyloid fibrils. The causative agent is an infectious amyloid that comprises solely misfolded prion protein (PrPSc). Prions can convert normal cellular prion protein (PrPC) to protease K-resistance prion protein fragment (PrP-res) in vitro; however, the intermediate steps involved in this spontaneous conversion still remain unknown. We investigated whether recombinant prion protein (rPrP) can directly convert into PrP-res via liquid-liquid phase separation (LLPS) in the absence of PrPSc. We found that rPrP underwent LLPS at the interface of the aqueous two-phase system of polyethylene glycol and dextran, whereas single-phase conditions were not inducible. Fluorescence recovery assay after photobleaching revealed that the liquid-solid phase transition occurred within a short time. The aged rPrP-gel acquired a proteinase-resistant amyloid accompanied by β-sheet conversion, as confirmed by Western blotting, Fourier transform infrared spectroscopy, and Congo red staining. The reactions required both the N-terminal region of rPrP (amino acids 23-89) and kosmotropic salts, suggesting that the kosmotropic anions may interact with the N-terminal region of rPrP to promote LLPS. Thus, structural conversion via LLPS and liquid-solid phase transition could be the intermediate steps in the conversion of prions.
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Affiliation(s)
- Hiroya Tange
- Department of Molecular Microbiology and Immunology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan; Department of Neuropsychiatry, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.
| | - Daisuke Ishibashi
- Department of Molecular Microbiology and Immunology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Takehiro Nakagaki
- Department of Molecular Microbiology and Immunology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Yuzuru Taguchi
- Department of Molecular Microbiology and Immunology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | | | - Hiroki Ozawa
- Department of Neuropsychiatry, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Noriyuki Nishida
- Department of Molecular Microbiology and Immunology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
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Masoumi H, Penchah HR, Gilani HG, Shaldehi TJ. Malic acid extraction from aqueous solution by using aqueous two-phase system method. RESULTS IN CHEMISTRY 2019. [DOI: 10.1016/j.rechem.2019.100009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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Khan BM, Cheong KL, Liu Y. ATPS: “Aqueous two-phase system” as the “answer to protein separation” for protein-processing food industry. Crit Rev Food Sci Nutr 2018; 59:3165-3178. [PMID: 29883189 DOI: 10.1080/10408398.2018.1486283] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Bilal Muhammad Khan
- Guangdong Provincial Key Laboratory of Marine Biotechnology, STU-UNIVPM Joint Algal Research Center, Department of Biology, College of Science, Shantou University, Shantou, Guangdong, PR China
| | - Kit-Leong Cheong
- Guangdong Provincial Key Laboratory of Marine Biotechnology, STU-UNIVPM Joint Algal Research Center, Department of Biology, College of Science, Shantou University, Shantou, Guangdong, PR China
| | - Yang Liu
- Guangdong Provincial Key Laboratory of Marine Biotechnology, STU-UNIVPM Joint Algal Research Center, Department of Biology, College of Science, Shantou University, Shantou, Guangdong, PR China
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Sant'Anna V, Folmer Correa AP, de Souza da Motta A, Brandelli A. Liquid-liquid extraction of antimicrobial peptide P34 by aqueous two-phase and micellar systems. Prep Biochem Biotechnol 2018; 46:838-843. [PMID: 26853378 DOI: 10.1080/10826068.2016.1141301] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Antimicrobial peptide P34 is a promising biopreservative for utilization in the food industry. In this work, aqueous biphasic systems (ABS) and aqueous biphasic micellar systems (ABMS) were studied as prestep for purification of peptide P34. The ABS was prepared with polyethylene glycol (PEG) and inorganic salts and the ABMS with Triton X-114 was chosen as the phase-forming surfactant. Results indicate that peptide P34 partitions preferentially to PEG-rich phase and extraction with ammonium sulfate [(NH4)2SO4], yielding a 75% recovery of the antimicrobial activity, specific activity of 1,530 antimicrobial units per mg of protein, and purification fold of 2.48. Protein partition coefficient and partition coefficient for the biological activity with (NH4)2SO4 system were 0.48 and 64, respectively. Addition of sodium chloride did not affect recovery, but decreased protein amount in the PEG-rich phase, indicating a higher partition of biomolecules. ABMS did not yield good recovery of antimicrobial activity. Purification fold using PEG-(NH4)2SO4 and 1.0 mol l-1 sodium chloride was twice higher than that obtained by conventional protocol, indicating a successful utilization of ABS as a step for purification of peptide P34.
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Affiliation(s)
- Voltaire Sant'Anna
- a Laboratório de Bioquímica e Microbiologia Aplicada, Instituto de Ciência e Tecnologia de Alimentos , Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil.,b Universidade Estadual do Rio Grande do Sul, Unidade de Encantado , Encantado , Brazil
| | - Ana Paula Folmer Correa
- a Laboratório de Bioquímica e Microbiologia Aplicada, Instituto de Ciência e Tecnologia de Alimentos , Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
| | - Amanda de Souza da Motta
- c Departamento de Microbiologia, Instituto de Ciências Básicas da Saúde , Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
| | - Adriano Brandelli
- a Laboratório de Bioquímica e Microbiologia Aplicada, Instituto de Ciência e Tecnologia de Alimentos , Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
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Iqbal M, Tao Y, Xie S, Zhu Y, Chen D, Wang X, Huang L, Peng D, Sattar A, Shabbir MAB, Hussain HI, Ahmed S, Yuan Z. Aqueous two-phase system (ATPS): an overview and advances in its applications. Biol Proced Online 2016; 18:18. [PMID: 27807400 PMCID: PMC5084470 DOI: 10.1186/s12575-016-0048-8] [Citation(s) in RCA: 366] [Impact Index Per Article: 45.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 09/26/2016] [Indexed: 01/06/2023] Open
Abstract
Aqueous two-phase system (ATPS) is a liquid-liquid fractionation technique and has gained an interest because of great potential for the extraction, separation, purification and enrichment of proteins, membranes, viruses, enzymes, nucleic acids and other biomolecules both in industry and academia. Although, the partition behavior involved in the method is complex and difficult to predict. Current research shows that it has also been successfully used in the detection of veterinary drug residues in food, separation of precious metals, sewage treatment and a variety of other purposes. The ATPS is able to give high recovery yield and is easily to scale up. It is also very economic and environment friendly method. The aim of this review is to overview the basics of ATPS, optimization and its applications.
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Affiliation(s)
- Mujahid Iqbal
- National Reference Laboratory of Veterinary Drug Residues (HZAU)/MOA Key Laboratory of Food Safety Evaluation, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Yanfei Tao
- National Reference Laboratory of Veterinary Drug Residues (HZAU)/MOA Key Laboratory of Food Safety Evaluation, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Shuyu Xie
- National Reference Laboratory of Veterinary Drug Residues (HZAU)/MOA Key Laboratory of Food Safety Evaluation, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Yufei Zhu
- National Reference Laboratory of Veterinary Drug Residues (HZAU)/MOA Key Laboratory of Food Safety Evaluation, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Dongmei Chen
- National Reference Laboratory of Veterinary Drug Residues (HZAU)/MOA Key Laboratory of Food Safety Evaluation, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Xu Wang
- National Reference Laboratory of Veterinary Drug Residues (HZAU)/MOA Key Laboratory of Food Safety Evaluation, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Lingli Huang
- National Reference Laboratory of Veterinary Drug Residues (HZAU)/MOA Key Laboratory of Food Safety Evaluation, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Dapeng Peng
- National Reference Laboratory of Veterinary Drug Residues (HZAU)/MOA Key Laboratory of Food Safety Evaluation, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Adeel Sattar
- National Reference Laboratory of Veterinary Drug Residues (HZAU)/MOA Key Laboratory of Food Safety Evaluation, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Muhammad Abu Bakr Shabbir
- MAO Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Hafiz Iftikhar Hussain
- MAO Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Saeed Ahmed
- MAO Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Zonghui Yuan
- National Reference Laboratory of Veterinary Drug Residues (HZAU)/MOA Key Laboratory of Food Safety Evaluation, Huazhong Agricultural University, Wuhan, Hubei 430070 China
- MAO Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei 430070 China
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Ramírez-Vick JE, García AA. Recent Developments in the Use of Group-Specific Ligands for Affinity Bioseparations. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/03602549608001293] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Oliveira L, Sarubbo L, Porto A, Campos-Takaki G, Tambourgi E. Partition of trypsin in aqueous two-phase systems of poly(ethylene glycol) and cashew-nut tree gum. Process Biochem 2002. [DOI: 10.1016/s0032-9592(02)00191-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Engel S, Barak Z, Chipman DM, Merchuk JC. Purification of acetohydroxy acid synthase by separation in an aqueous two-phase system. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 2000; 743:281-6. [PMID: 10942298 DOI: 10.1016/s0378-4347(00)00053-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Extraction in a polyethylene glycol (PEG)-phosphate aqueous two-phase system was considered as a primary step in purification of the acetohydroxy acid synthase III large catalytic subunit from an E. coli extract. Extraction optimization was achieved by varying the system parameters. Two systems with the following weight compositions were chosen for purification: PEG-2000 (16%)-phosphate (6%) and PEG-4000 (14%)-phosphate (5.5%)-KCl (8%), both at pH 7.0 and 1 mg total protein per 1 g system. Significant purification was achieved by a single extraction step with 70% recovery of the enzyme. After an additional ion-exchange chromatography step, pure enzyme was obtained in a 50% overall yield.
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Affiliation(s)
- S Engel
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel
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Li M, Zhu ZQ, Wu YT, Lin DQ. Measurement of phase diagrams for new aqueous two-phase systems and prediction by a generalized multicomponent osmotic virial equation. Chem Eng Sci 1998. [DOI: 10.1016/s0009-2509(98)00077-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lebreton B, Huddleston J, Lyddiatt A. Polymer-protein interactions in aqueous two phase systems: fluorescent studies of the partition behaviour of human serum albumin. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 1998; 711:69-79. [PMID: 9699976 DOI: 10.1016/s0378-4347(98)00102-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This study describes the partitioning of fluorescent macromolecules in aqueous two-phase systems (ATPS) comprising phosphate salt and poly(ethylene glycol) of three different molecular masses (i.e. 1000, 1450 and 2000 Da). The impact of system assembly was studied with fluorescent macromolecules introduced in contact with either (i) first salt, then polymer or (ii) first polymer, then salt, or (iii) with both salt and polymer simultaneously. Native human serum albumin (HSA) and derivatives labelled with N-(iodoacetylaminoethyl)-5-naphthylamine-1-sulphonic acid (1,5-IAEDANS) were partitioned using selected ATPS. Partitioning behaviour was characterised by molecular rotational studies of recovered proteins based upon changes of depolarisation. Measurements were undertaken by steady-state fluorescence or time-decay fluorescence using a single-photon counting system. In addition, circular dichroism was used as a tool for the study of macromolecular secondary structure. Two discrete categories of stable molecular structure have been identified that exist irrespective of the phase environment. The findings form the basis for a discussion of polymer protein interactions and the molecular micro-environment of proteins in ATPS.
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Affiliation(s)
- B Lebreton
- Biochemical Recovery Group, School of Chemical Engineering, University of Birmingham, UK
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12
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Horseradish peroxidase extraction and purification by aqueous two-phase partition. Appl Biochem Biotechnol 1995. [DOI: 10.1007/bf02788604] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Luther JR, Glatz CE. Genetically engineered charge modifications to enhance protein separation in aqueous two-phase systems: Charge directed partitioning. Biotechnol Bioeng 1995; 46:62-8. [DOI: 10.1002/bit.260460109] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Luther JR, Glatz CE. Genetically engineered charge modifications to enhance protein separation in aqueous two-phase systems: Electrochemical partitioning. Biotechnol Bioeng 1994; 44:147-53. [DOI: 10.1002/bit.260440202] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Schmidt A, Ventom A, Asenjo J. Partitioning and purification of α-amylase in aqueous two-phase systems. Enzyme Microb Technol 1994. [DOI: 10.1016/0141-0229(94)90076-0] [Citation(s) in RCA: 118] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Rogers RD, Bond AH, Bauer CB. Metal Ion Separations in Polyethylene Glycol-Based Aqueous Biphasic Systems. SEP SCI TECHNOL 1993. [DOI: 10.1080/01496399308018023] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Nyström M, Järvinen P. Modification of polysulfone ultrafiltration membranes with UV irradiation and hydrophilicity increasing agents. J Memb Sci 1991. [DOI: 10.1016/s0376-7388(00)81540-9] [Citation(s) in RCA: 104] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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