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Abstract
The development of sophisticated molecular modeling software and new bioinformatic tools, as well as the emergence of data banks containing detailed information about a huge number of proteins, enabled the de novo intelligent design of synthetic affinity ligands. Such synthetic compounds can be tailored to mimic natural biological recognition motifs or to interact with key surface-exposed residues on target proteins, and are designated as "biomimetic ligands". A well-established methodology for generating biomimetic or synthetic affinity ligands integrates rational design with combinatorial solid-phase synthesis and screening, using the triazine scaffold and analogs of amino acid side chains to create molecular diversity.Triazine-based synthetic ligands are nontoxic, low-cost, and highly stable compounds that can replace advantageously natural biological ligands in the purification of proteins by affinity-based methodologies.
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Affiliation(s)
- Isabel T Sousa
- iBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, Lisbon, Portugal
| | - M Ângela Taipa
- iBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, Lisbon, Portugal.
- Department of Bioengineering, Instituto Superior Técnico, University of Lisbon, Lisbon, Portugal.
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High-Throughput Screening of Dye-Ligands for Chromatography. Methods Mol Biol 2020. [PMID: 33128742 DOI: 10.1007/978-1-0716-0775-6_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Dye-ligand-based chromatography has become popular after Cibacron Blue, the first reactive textile dye, found application for protein purification. Many other textile dyes have since been successfully used to purify a number of proteins and enzymes. While the exact nature of their interaction with target proteins is often unclear, dye-ligands are thought to mimic the structural features of their corresponding substrates, cofactors, etc. The dye-ligand affinity matrices are therefore considered pseudo-affinity matrices. In addition, dye-ligands may simply bind with proteins due to electrostatic, hydrophobic, and hydrogen bonding interactions. Because of their low cost, ready availability, and structural stability, dye-ligand affinity matrices have gained much popularity. The choice of a large number of dye structures offers a range of matrices to be prepared and tested. When presented in the high-throughput screening mode, these dye-ligand matrices serve as a formidable tool for protein purification. One could pick from the list of dye-ligands already available or build a systematic library of such structures for use. A high-throughput screen may be set up to choose the best dye-ligand matrix as well as ideal conditions for binding and elution, for a given protein. The mode of operation could be either manual or automated. The technology is available to test the performance of dye-ligand matrices in small volumes in an automated liquid handling workstation. Screening a systematic library of dye-ligand structures can help establish a structure-activity relationship. While the origins of dye-ligand chromatography lie in exploiting pseudo-affinity, it is now possible to design very specific biomimetic dye structures. High-throughput screening will be of value in this endeavor as well.
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3
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Abstract
Dye-ligand-based chromatography has become popular after Cibacron Blue, the first reactive textile dye, found application for protein purification. Many other textile dyes have since been successfully used to purify a number of proteins and enzymes. While the exact nature of their interaction with target proteins is often unclear, dye-ligands are thought to mimic the structural features of their corresponding substrates, cofactors, etc. The dye-ligand affinity matrices are therefore considered pseudo-affinity matrices. In addition, dye-ligands may simply bind with proteins due to electrostatic, hydrophobic, and hydrogen-bonding interactions. Because of their low cost, ready availability, and structural stability, dye-ligand affinity matrices have gained much popularity. Choice of a large number of dye structures offers a range of matrices to be prepared and tested. When presented in the high-throughput screening mode, these dye-ligand matrices provide a formidable tool for protein purification. One could pick from the list of dye-ligands already available or build a systematic library of such structures for use. A high-throughput screen may be set up to choose best dye-ligand matrix as well as ideal conditions for binding and elution, for a given protein. The mode of operation could be either manual or automated. The technology is available to test the performance of dye-ligand matrices in small volumes in an automated liquid-handling workstation. Screening a systematic library of dye-ligand structures can help establish a structure-activity relationship. While the origins of dye-ligand chromatography lay in exploiting pseudo-affinity, it is now possible to design very specific biomimetic dye structures. High-throughput screening will be of value in this endeavor as well.
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4
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Abstract
The development of sophisticated molecular modeling software and new bioinformatic tools, as well as the emergence of data banks containing detailed information about a huge number of proteins, enabled the de novo intelligent design of synthetic affinity ligands. Such synthetic compounds can be tailored to mimic natural biological recognition motifs or to interact with key surface-exposed residues on target proteins and are designated as "biomimetic ligands." A well-established methodology for generating biomimetic or synthetic affinity ligands integrates rational design with combinatorial solid-phase synthesis and screening, using the triazine scaffold and analogues of amino acids side chains to create molecular diversity.Triazine-based synthetic ligands are nontoxic, low-cost, highly stable compounds that can replace advantageously natural biological ligands in the purification of proteins by affinity-based methodologies.
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Affiliation(s)
- Isabel T Sousa
- Centre for Biological and Chemical Engineering, Institute for Biotechnology and Bioengineering (IBB), Instituto Superior Técnico, Technical University of Lisbon, Lisbon, Portugal
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5
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del Pilar Ferraris M, Barrera GI, Padilla AP, Rodríguez JA. Affinity adsorption of lysozyme on a macroligand prepared with Cibacron Blue 3GA attached to yeast cells. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:2741-5. [DOI: 10.1016/j.jchromb.2011.07.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 07/28/2011] [Accepted: 07/29/2011] [Indexed: 11/25/2022]
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6
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Zhao G, Bai S, Sun Y. Development of a displacer-immobilized ligand docking scheme for displacer screening for protein displacement chromatography. Biochem Eng J 2011. [DOI: 10.1016/j.bej.2011.03.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Kumar S, Dalvi DB, Moorthy M, Korde SS, Fondekar KP, Sahasrabudhe SD, Schacht HT, Ekkundi VS, Halik C, Choudhury R, Kumar A, Punekar NS. Discriminatory protein binding by a library of 96 new affinity resins: a novel dye-affinity chromatography tool-kit. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:3610-8. [PMID: 19766065 DOI: 10.1016/j.jchromb.2009.08.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2009] [Revised: 08/13/2009] [Accepted: 08/28/2009] [Indexed: 10/20/2022]
Abstract
Initial acceptance of Cibacron Blue 3G-A based matrices has made dye-ligand affinity chromatography an attractive proposition. This prompted the synthesis and search for new dye structures. A systematic library of 96 affinity resins was generated using novel analogs of Cibacron Blue 3G-A and also by varying spacer lengths for immobilization. The library was tested in a batch binding and elution mode using seven different proteins--four Aspergillus enzymes namely, NADP-glutamate dehydrogenase, laccase, glutamine synthetase and arginase, bovine pancreatic trypsin and the two serum proteins human serum albumin and immunoglobulin G. Unique binding patterns were observed for each of them indicating that the library displayed discriminatory interactions. The significance of spacer length in the interaction with proteins was discernable. Trypsin interacted best with affinity resins that had no spacer. It was possible to resolve IgG and HSA from a mixture using a combination of resins. There was a good spread of HSA binding capacity in the 96 affinity resins. While some showed better HSA binding capacity than the commercial CB3GA-based matrix, a few with lower capacity were also observed. Subsequent to an initial screen, one affinity resin (CR-017) could be used to enrich Aspergillus terreus NADP-GDH from crude cell extracts. The efficacy of this dye-affinity resin was rationalized by characterizing NADP-GDH inhibition kinetics with the corresponding free dye ligand. In the sum, the library provides a set of dye-ligand affinity matrices with a potential for use in high throughput screening for protein purification.
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Affiliation(s)
- Sunil Kumar
- Biotechnology Group, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
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8
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Liao YC, Syu MJ. Effects of poly(ethylene glycol) and salt on the binding of α-amylase from the fermentation broth of Bacillus amyloliquefaciens by Cu2+-β-CD affinity adsorbent. Carbohydr Polym 2009. [DOI: 10.1016/j.carbpol.2009.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Chromatography-free recovery of biopharmaceuticals through aqueous two-phase processing. Trends Biotechnol 2009; 27:240-7. [DOI: 10.1016/j.tibtech.2009.01.004] [Citation(s) in RCA: 182] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2008] [Revised: 12/15/2008] [Accepted: 01/05/2009] [Indexed: 11/23/2022]
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10
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11
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Roy I, Gupta MN. Unexpected affinity of polysaccharides and its application in separation of enzymes on fluidized beds. SEP SCI TECHNOL 2007. [DOI: 10.1081/ss-120002738] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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12
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Wang J, Peng X, Liu D, Bao Y, An L. Synthesis of new ‘biomimetic’ dye-ligands and their application in the purification of alkaline phosphatase. Sep Purif Technol 2006. [DOI: 10.1016/j.seppur.2005.11.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Hilbrig F, Stocker G, Schläppi JM, Kocher H, Freitag R. Utilization of Group Specific Ligands in the Downstream Processing of Proteins by Affinity Precipitation. FOOD AND BIOPRODUCTS PROCESSING 2006. [DOI: 10.1205/fbp.05153] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Ling TC, Lyddiatt A. Integration of mechanical cell disruption and fluidised bed recovery of G3PDH from unclarified disrupted yeast: A comparative study of the performance of unshielded and polymer shielded dye-ligand chromatography systems. J Biotechnol 2005; 119:436-48. [PMID: 16054721 DOI: 10.1016/j.jbiotec.2005.05.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2005] [Revised: 05/12/2005] [Accepted: 05/24/2005] [Indexed: 11/16/2022]
Abstract
The development of a simplified process for the simultaneous disruption and direct selective purification of intracellular proteins from unclarified yeast disruptate has been investigated. The recovery of glyceraldehyde 3-phosphate dehydrogenase (G3PDH) from baker's yeast was selected as a potential demonstration of the generic applicability and practical feasibility of this integrated technique. The application of an adsorbent characterised by high density (UpFront steel-agarose; rho=2.65g ml(-1)) facilitated the combining of cell disruption operation (bead milling of 50% ww/v of yeast suspension at 7.2 lh(-1)) with fluidised bed dye-ligand (Cibacron Blue 3GA) adsorption operated immediately downstream of the disrupter. The adoption of a polymer shielded, dye-ligand technique advanced recovery efficiency. It was demonstrated that G3PDH could be recovered with a yield of 67.5% bound activity and a specific activity of 40.2IU mg(-1), after a single step elution with 0.15M NaCl. The generic application of this approach has been evaluated.
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Affiliation(s)
- Tau Chuan Ling
- Biochemical Recovery Group, Centre for Formulation Engineering, Department of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
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15
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Jahanshahi M, Sun Y, Santos E, Pacek A, Teixera Franco T, Nienow A, Lyddiatt A. Operational intensification by direct product sequestration from cell disruptates: application of a pellicular adsorbent in a mechanically integrated disruption-fluidised bed adsorption process. Biotechnol Bioeng 2002; 80:201-12. [PMID: 12209776 DOI: 10.1002/bit.10360] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A novel prototype adsorbent, designed for intensified fluidised bed adsorption processes, was assembled by the emulsification coating of 4% (w/v) porous agarose upon a zirconia-silica solid core. The adsorbent, designated ZSA (particle density 1.75 g/ml, maximum pellicle depth 40 microm), was subjected to physical and biochemical comparison with the performance of two commercial adsorbents (Streamline and Macrosorb K4AX). Bed expansion qualities and hydrodynamic characteristics (N, D(axl) and B(o)) of ZSA demonstrated a marked robustness in the face of elevated velocities (up to 550 cm/h) and biomass loading (up to 30% (ww/v)) disrupted yeast cells. Cibracron Blue derivatives of the pellicular prototype (ZSA-CB), evaluated in the batch and fluidised bed recovery of glyceraldehyde 3-phosphate dehydrogenase (G3PDH) from unclarified yeast disruptates, exhibited superior capacities and adsorption/desorption performance to the commercial derivatives. These advanced physical and biochemical properties facilitated a demonstration of the direct, mechanical coupling of bead-milling and fluidised bed adsorption in a fully integrated process for the accelerated recovery of G3PDH from yeast. The generic application of such pellicular adsorbents and integrated processes to the recovery of labile, intracellular products is discussed.
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Affiliation(s)
- Mohsen Jahanshahi
- Biochemical Recovery Group, Research Centre for Formulation Engineering, School of Engineering, University of Birmingham, Edgbaston, Birmingham, West Midlands UK
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Fernandes S, Kim HS, Hatti-Kaul R. Affinity extraction of dye- and metal ion-binding proteins in polyvinylpyrrolidone-based aqueous two-phase system. Protein Expr Purif 2002; 24:460-9. [PMID: 11922763 DOI: 10.1006/prep.2001.1584] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Affinity extraction of dye- and metal ion-binding proteins, respectively, in a polyvinylpyrrolidone (PVP40)-Reppal PES 100 two-phase system was investigated. Due to the ability of PVP to complex azo dyes and inorganic ions, covalent coupling of the ligands was not essential. Cibacron Blue F3GA was used as the ligand for extraction of lactate dehydrogenase (LDH) from porcine muscle, while copper ions were used for extraction of B. stearothermophilus LDH with a fusion tag of six histidine residues (His6-LDH) from recombinant Escherichia coli homogenate. The binding strength of the enzymes to their respective ligands was only slightly reduced in the presence of PVP. The partition coefficient of Cibacron Blue and Cu2+ ions in the two-phase systems composed of different concentrations of PVP and Reppal was in the range of 20-30, with maximal partitioning being observed in the 17% (w/w) PVP40-10% Reppal PES100 system. Only a minor leakage of the ligands to the bottom phase was observed with time. The partitioning of porcine LDH to the PVP phase was increased 100-fold, and a maximal recovery of 89% was obtained in the two-phase system loaded with 0.2% (w/w) Cibacron Blue. The enzyme was quantitatively recovered with further purification from the PVP-dye phase using a secondary extraction step with 170 mM phosphate or alternatively with 100 mM phosphate containing NADH or NaCl. A more than 10-fold increase in the partition coefficient of His6-LDH was achieved in the two-phase system loaded with 0.4% (w/w) copper sulfate compared to the system lacking the metal ions. The enzyme was also back-extracted into phosphate phase in the presence of imidazole.
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Affiliation(s)
- Sheryl Fernandes
- Department of Biotechnology, Center for Chemistry and Chemical Engineering, S-221 00 Lund, Sweden
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17
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Bossi A, Piletsky SA, Piletska EV, Righetti PG, Turner AP. Surface-grafted molecularly imprinted polymers for protein recognition. Anal Chem 2001; 73:5281-6. [PMID: 11721930 DOI: 10.1021/ac0006526] [Citation(s) in RCA: 255] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A technique for coating microplate wells with molecularly imprinted polymers (MIPs) specific for proteins is presented. 3-Aminophenylboronic acid was polymerized in the presence of the following templates: microperoxidase, horseradish peroxidase, lactoperoxidase, and hemoglobin, via oxidation of the monomer by ammonium persulfate. This process resulted in the grafting of a thin polymer layer to the polystyrene surface of the microplates. Imprinting resulted in an increased affinity of the polymer toward the corresponding templates. The influence of the washing procedure, template concentration, and buffer pH on the polymer affinity was analyzed. It was shown that the stabilizing function of the support and spatial orientation of the polymer chains and template functional groups are the major factors affecting the imprint formation and template recognition. Easy preparation of the MIPs, their high stability, and their ability to recognize small and large proteins, as well as to discriminate molecules with small variations in charge, make this approach attractive and broadly applicable in biotechnology, assays and sensors.
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Affiliation(s)
- A Bossi
- Institute of BioScience and Technology, Cranfield University, Bedfordshire, UK.
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18
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Abstract
Dye-ligands have been considered as one of the important alternatives to natural counterparts for specific affinity chromatography. Dye-ligands are able to bind most types of proteins, in some cases in a remarkably specific manner. They are commercially available, inexpensive, and can easily be immobilized, especially on matrices bearing hydroxyl groups. Although dyes are all synthetic in nature, they are still classified as affinity ligands because they interact with the active sites of many proteins mimicking the structure of the substrates, cofactors, or binding agents for those proteins. A number of textile dyes, known as reactive dyes, have been used for protein purification. Most of these reactive dyes consist of a chromophore (either azo dyes, anthraquinone, or phathalocyanine), linked to a reactive group (often a mono- or dichlorotriazine ring). The interaction between the dye ligand and proteins can be by complex combination of electrostatic, hydrophobic, hydrogen bonding. Selection of the supporting matrix is the first important consideration in dye-affinity systems. There are several methods for immobilization of dye molecules onto the support matrix, in which usually several intermediate steps are followed. Both the adsorption and elution steps should carefully be optimized/designed for a successful separation. Dye-affinity systems in the form of spherical sorbents or as affinity membranes have been used in protein separation.
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Affiliation(s)
- A Denizli
- Biochemistry Division, Department of Chemistry, Hacettepe University, 06532 Beytepe, Ankara, Turkey
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19
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Schneedorf JM, Santoro MM, Lovrien RE, Mares-Guia M. A time-dependent, two-step binding mode of the nitro dye flavianic acid to trypsin in acid media. Braz J Med Biol Res 2001; 34:1047-54. [PMID: 11471045 DOI: 10.1590/s0100-879x2001000800012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Synthetic dyes bind to proteins causing selective coprecipitation of the complexes in acid aqueous solution by a process of reversible denaturation that can be used as an alternative method for protein fractionation. The events that occur before precipitation were investigated by equilibrium dialysis using bovine trypsin and flavianic acid as a model able to cause coprecipitation. A two-step mode of interaction was found to be dependent on the incubation periods allowed for binding, with pronounced binding occurring after 42 h of incubation. The first step seems to involve hydration effects and conformational changes induced by binding of the first dye molecule, following rapid denaturation due to the binding of six additional flavianate anions to the macromolecule.
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Affiliation(s)
- J M Schneedorf
- Laboratório de Fitofármacos, Faculdade de Medicina, Universidade de Alfenas, 37130-000 Alfenas MG, Brasil.
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20
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Affiliation(s)
- M J Danson
- Centre for Extremophile Research, Department of Biology and Biochemistry, University of Bath, Bath BA2 7AY, United Kingdom
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Pal B, Bajpai PK, Basu Baul TS. Binding of 5-(2'-carboxyphenyl)azoquinolin-8-ol to bovine serum albumin: a spectroscopic study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2000; 56A:2453-2458. [PMID: 11075687 DOI: 10.1016/s1386-1425(00)00320-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Dye-protein interactions are of immense importance in dye-ligand chromatography of protein purification. In this type of interactions, the structure of the dye molecules has a significant role. However, studies on the structure of these ligands are scanty. Therefore, we have spectroscopically investigated interactions of three 5-(aryl)azoquinolin-8-ol derivatives, which could be used as potent chelate forming agents, with bovine serum albumin (BSA). Among these, the carboxy derivative, 5-(2'-carboxyphenyl)azoquinolin-8-ol (CPAQ) has been selected for resonance Raman study. It has been shown that BSA has six independent binding sites for CPAQ at pH 7.2, the binding constant being 6.2 x 10(3) M(-1). Assignments of Raman modes of bound CPAQ are also presented. It has also been shown that bound CPAQ exists exclusively in hydrazone form. Results further demonstrate that the azo group nitrogen adjacent to the phenyl ring probably participated in the formation of a BSA-CPAQ complex.
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Affiliation(s)
- B Pal
- Institute of Self Organising Systems and Biophysics, North-Eastern Hill University, Shillong, India.
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22
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Roy I, Sardar M, Gupta MN. Exploiting unusual affinity of usual polysaccharides for separation of enzymes on fluidized beds. Enzyme Microb Technol 2000; 27:53-65. [PMID: 10862902 DOI: 10.1016/s0141-0229(00)00148-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two polysaccharides, alginate and chitosan, showed unusual affinity and bound alpha-amylase (from various sources) and Aspergillus niger cellulase, respectively. The beads prepared from these polymers were successfully used for the purification of the respective enzymes by fluidized bed affinity chromatography. alpha-amylase from wheat germ could be purified by 58-fold with about 90% recovery of activity. Aspergillus niger cellulase, on the other hand, was purified by 30-fold with 80% recovery of enzyme activity. Both purified preparations show single band on SDS-PAGE.
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Affiliation(s)
- I Roy
- Chemistry Department, Indian Institute of Technology, Delhi, Hauz Khas, 110016, New Delhi, India
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Connaris H, Chaudhuri JB, Danson MJ, Hough DW. Expression, reactivation, and purification of enzymes fromHaloferax volcanii inEscherichia coli. Biotechnol Bioeng 1999. [DOI: 10.1002/(sici)1097-0290(19990705)64:1<38::aid-bit4>3.0.co;2-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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24
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Teng SF, Sproule K, Hussain A, Lowe CR. A strategy for the generation of biomimetic ligands for affinity chromatography. Combinatorial synthesis and biological evaluation of an IgG binding ligand. J Mol Recognit 1999. [DOI: 10.1002/(sici)1099-1352(199901/02)12:1%3c67::aid-jmr443%3e3.0.co;2-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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25
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Teng SF, Sproule K, Hussain A, Lowe CR. A strategy for the generation of biomimetic ligands for affinity chromatography. Combinatorial synthesis and biological evaluation of an IgG binding ligand. J Mol Recognit 1999; 12:67-75. [PMID: 10398398 DOI: 10.1002/(sici)1099-1352(199901/02)12:1<67::aid-jmr443>3.0.co;2-4] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
An IgG-binding ligand library comprising 88 adsorbents based on a known lead compound (Li et al., 1998) was generated on an agarose solid phase. Individual members of the library were synthesized in two chemical steps using cyanuric chloride as the scaffold immobilized on the beaded support. The library was screened for binding of pure human IgG, whence selected ligands from the library were further assessed for specificity by the purification of IgG from human plasma. The potential of this strategy for the rapid identification and evaluation of chemical leads was demonstrated by the discovery of ligands with IgG binding capabilities. It was found that ligands comprising 3-aminophenol and an aminonaphthol moiety substituted on a triazine nucleus generally performed better than other ligands in the library. An immobilized ligand 22/8 adsorbent was able to purify IgG with high yield and a purity >99% from diluted human plasma.
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Affiliation(s)
- S F Teng
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QT, UK
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26
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Dorsey JG, Cooper WT, Siles BA, Foley JP, Barth HG. Liquid Chromatography: Theory and Methodology. Anal Chem 1998. [DOI: 10.1021/a1980022h] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- John G. Dorsey
- Department of Chemistry, Florida State University, Tallahassee, Florida 32306-4390
| | - William T. Cooper
- Department of Chemistry, Florida State University, Tallahassee, Florida 32306-4390
| | - Barbara A. Siles
- Department of Chemistry, College of William and Mary, Williamsburg, Virginia 23187-8795
| | - Joe P. Foley
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085-1699
| | - Howard G. Barth
- Central Research and Development Department, E. I. du Pont de Nemours & Company, P.O. Box 80228, Experimental Station, Wilmington, Delaware 19880
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Zijlstra GM, Gooijer CD, Tramper J. Extractive bioconversions in aqueous two-phase systems. Curr Opin Biotechnol 1998; 9:171-6. [PMID: 9664049 DOI: 10.1016/s0958-1669(98)80111-0] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Although extractive bioconversions in aqueous two-phase systems (ATPSs) have been studied for over a decade, this has not yet resulted in widespread industrial application. The main reasons are the cost of the phase-forming polymers and the complexity of ATPS behavior. A number of recent developments may give a new impetus to this technology. First of all, the use of extractive bioconversions in ATPSs has recently been extended to high-value protein products, while in the meantime the development of low-cost ATPSs is ongoing. Furthermore, novel chromatographic methods enable the analysis of polymer and metabolite compositions in complex ATPS mixtures, and recently employed statistical experimental designs provide a tool for efficient data gathering, while they also reveal synergistic effects between process parameters. Together, these developments open the way towards improved modeling of partitioning behavior in ATPSs.
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Affiliation(s)
- GM Zijlstra
- Gist-brocades/Bio-Intermediair BV PO Box 454, 9700 AL, Groningen, The Netherlands
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28
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Albumin separation with Cibacron Blue carrying macroporous chitosan and chitin affinity membranes. J Memb Sci 1998. [DOI: 10.1016/s0376-7388(98)00025-8] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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