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Carrillo JT, Borthakur D. Characterization of a plant S-adenosylmethionine synthetase from Acacia koa. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 210:108618. [PMID: 38631157 DOI: 10.1016/j.plaphy.2024.108618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 03/05/2024] [Accepted: 04/07/2024] [Indexed: 04/19/2024]
Abstract
The Acacia koa S-adenosylmethionine (SAM) synthetase was identified from transcriptome data and cloned into the T7-expression vector pEt14b. Assays indicate a thermoalkaliphic enzyme which tolerates conditions up to pH 10.5, 55 °C and 3 M KCl. In vitro examples of plant SAM-synthetase activity are scarce, however this study provides supporting evidence that these extremophilic properties may actually be typical for this plant enzyme. Enzyme kinetic constants (Km = 1.44 mM, Kcat = 1.29 s-1, Vmax 170 μM. min-1) are comparable to nonplant SAM-synthetases except that substrate inhibition was not apparent at 10 mM ATP/L-methionine. Methods were explored in this study to reduce feedback inhibition, which is known to limit SAM-synthetase activity in vitro. Four single-point mutation variants of the Acacia koa SAM-synthetase were produced, each with varying degrees of reduced reaction rate, greater sensitivity to product inhibition and loss of thermophilic properties. Although an enhanced mutant was not produced, this study describes the first mutagenesis of a plant SAM-synthetase. Overcoming feedback inhibition was accomplished by the addition of organic solvent to enzyme assays. Acetonitrile, methanol or dimethylformamide, when included as 25% of the assay volume, improved total SAM production by 30-65%.
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Affiliation(s)
- James T Carrillo
- University of Hawaii at Manoa, Department of Molecular Biosciences and Bioengineering, 1955 East-West Road, Agricultural Sciences 218, Honolulu, HI, 96822, USA.
| | - Dulal Borthakur
- University of Hawaii at Manoa, Department of Molecular Biosciences and Bioengineering, 1955 East-West Road, Agricultural Sciences 218, Honolulu, HI, 96822, USA.
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2
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Wang H, Qin Y, Xin L, Nan Q, Xu X, Zhao C, Wu W. Pilot-scale study of innovative mechanically-enhanced dynamic composting for treating kitchen waste. BIORESOURCE TECHNOLOGY 2024; 394:130176. [PMID: 38086465 DOI: 10.1016/j.biortech.2023.130176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/26/2023] [Accepted: 12/06/2023] [Indexed: 12/17/2023]
Abstract
This study introduced a novel mechanically-enhanced dynamic composting (MEDC) method for treating kitchen waste (KW) through partial-mixing and stratified fermentation. A pilot test varied aeration frequencies (AF) to refine control parameters and explore the maturation mechanism. Results showed that a moderate AF (10 min/4 h) achieved optimal efficiency, with a compost germination index of 123 % within 15 d. Moderate AF enhanced the growth of Corynebacterium_1 (25.4 %) and Saccharomonospora (10.5 %) during the low-temperature stage and Bacillus growth (91.3 %) during the maturation stage. Moreover, it enhanced microbial interactions (with an average degree of 19.9) and promoted substrate degradation and transformation, expediting heating and maturation. Multivariate dimensionality reduction analysis showed the MEDC accomplished rapid composting through stratified composting, dividing the reactor into distinct functional zones: feeding, low-temperature, high-temperature, and maturation. This enabled efficient microorganism enrichment and material degradation, expediting KW decomposition and maturation. This study offers a promising alternative for accelerated KW composting.
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Affiliation(s)
- Haoshu Wang
- Institute of Environment Science and Technology, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, PR China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Zhejiang 310058, PR China; Zhejiang Transper Environmental Protection Technology Co., Ltd., Hangzhou 310058, PR China
| | - Yong Qin
- Institute of Environment Science and Technology, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, PR China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Zhejiang 310058, PR China.
| | - Liqing Xin
- Institute of Environment Science and Technology, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, PR China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Zhejiang 310058, PR China
| | - Qiong Nan
- Institute of Environment Science and Technology, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, PR China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Zhejiang 310058, PR China
| | - Xingkun Xu
- Institute of Environment Science and Technology, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, PR China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Zhejiang 310058, PR China
| | - Changxun Zhao
- Institute of Environment Science and Technology, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, PR China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Zhejiang 310058, PR China
| | - Weixiang Wu
- Institute of Environment Science and Technology, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, PR China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Zhejiang 310058, PR China
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3
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Antonopoulou I, Sapountzaki E, Rova U, Christakopoulos P. Ferulic Acid From Plant Biomass: A Phytochemical With Promising Antiviral Properties. Front Nutr 2022; 8:777576. [PMID: 35198583 PMCID: PMC8860162 DOI: 10.3389/fnut.2021.777576] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 12/31/2021] [Indexed: 11/13/2022] Open
Abstract
Plant biomass is a magnificent renewable resource for phytochemicals that carry bioactive properties. Ferulic acid (FA) is a hydroxycinnamic acid that is found widespread in plant cell walls, mainly esterified to polysaccharides. It is well known of its strong antioxidant activity, together with numerous properties, such as antimicrobial, anti-inflammatory and neuroprotective effects. This review article provides insights into the potential for valorization of FA as a potent antiviral agent. Its pharmacokinetic properties (absorption, metabolism, distribution and excretion) and the proposed mechanisms that are purported to provide antiviral activity are presented. Novel strategies on extraction and derivatization routes, for enhancing even further the antiviral activity of FA and potentially favor its metabolism, distribution and residence time in the human body, are discussed. These routes may lead to novel high-added value biorefinery pathways to utilize plant biomass toward the production of nutraceuticals as functional foods with attractive bioactive properties, such as enhancing immunity toward viral infections.
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Affiliation(s)
- Io Antonopoulou
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, Luleå, Sweden
| | - Eleftheria Sapountzaki
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, Luleå, Sweden
| | - Ulrika Rova
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, Luleå, Sweden
| | - Paul Christakopoulos
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, Luleå, Sweden
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4
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Reungoat V, Mouterde LM, Chadni M, Couvreur J, Isidore E, Allais F, Ducatel H, Ioannou I. Simultaneous extraction and enzymatic hydrolysis of mustard bran for the recovery of sinapic acid. FOOD AND BIOPRODUCTS PROCESSING 2021. [DOI: 10.1016/j.fbp.2021.09.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Cui H, Jaeger KE, Davari MD, Schwaneberg U. CompassR Yields Highly Organic-Solvent-Tolerant Enzymes through Recombination of Compatible Substitutions. Chemistry 2021; 27:2789-2797. [PMID: 33186477 DOI: 10.1002/chem.202004471] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/12/2020] [Indexed: 01/28/2023]
Abstract
The CompassR (computer-assisted recombination) rule enables, among beneficial substitutions, the identification of those that can be recombined in directed evolution. Herein, a recombination strategy is systematically investigated to minimize experimental efforts and maximize possible improvements. In total, 15 beneficial substitutions from Bacillus subtilis lipase A (BSLA), which improves resistance to the organic cosolvent 1,4-dioxane (DOX), were studied to compare two recombination strategies, the two-gene recombination process (2GenReP) and the in silico guided recombination process (InSiReP), employing CompassR. Remarkably, both strategies yielded a highly DOX-resistant variant, M4 (I12R/Y49R/E65H/N98R/K122E/L124K), with up to 14.6-fold improvement after screening of about 270 clones. M4 has a remarkably enhanced resistance in 60 % (v/v) acetone (6.0-fold), 30 % (v/v) ethanol (2.1-fold), and 60 % (v/v) methanol (2.4-fold) compared with wild-type BSLA. Molecular dynamics simulations revealed that attracting water molecules by charged surface substitutions is the main driver for increasing the DOX resistance of BSLA M4. Both strategies and obtained molecular knowledge can likely be used to improve the properties of other enzymes with a similar α/β-hydrolase fold.
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Affiliation(s)
- Haiyang Cui
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany
| | - Karl-Erich Jaeger
- Institute of Molecular Enzyme Technology, Heinrich Heine University Düsseldorf, Wilhelm Johnen Strasse, 52426, Jülich, Germany.,Institute of Bio-and Geosciences IBG 1: Biotechnology, Forschungszentrum Jülich GmbH, Wilhelm Johnen Strasse, 52426, Jülich, Germany
| | - Mehdi D Davari
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany
| | - Ulrich Schwaneberg
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany.,DWI Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, 52074, Aachen, Germany
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6
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Li Y, Zhang Y, Cheng Y, Du T, Zhang J. Solvent inhibition profiles and inverse solvent isotope effects for enzymatic methyl transfer catalyzed by nicotinamide N‐methyltransferase. J PHYS ORG CHEM 2020. [DOI: 10.1002/poc.4093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yuping Li
- School of Pharmaceutical Science and Technology Tianjin University Tianjin China
| | - Yali Zhang
- School of Pharmaceutical Science and Technology Tianjin University Tianjin China
| | - Yiting Cheng
- School of Pharmaceutical Science and Technology Tianjin University Tianjin China
| | - Tianshu Du
- School of Pharmaceutical Science and Technology Tianjin University Tianjin China
| | - Jianyu Zhang
- School of Pharmaceutical Science and Technology Tianjin University Tianjin China
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7
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Andler R, Valdés C, Díaz-Barrera A, Steinbüchel A. Biotransformation of poly(cis-1,4-isoprene) in a multiphase enzymatic reactor for continuous extraction of oligo-isoprenoid molecules. N Biotechnol 2020; 58:10-16. [DOI: 10.1016/j.nbt.2020.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 04/30/2020] [Accepted: 05/03/2020] [Indexed: 11/28/2022]
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8
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Cao Y, Herrero-Nogareda L, Cedergreen N. A comparative study of acetylcholinesterase and general-esterase activity assays using different substrates, in vitro and in vivo exposures and model organisms. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 189:109954. [PMID: 31759743 DOI: 10.1016/j.ecoenv.2019.109954] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 10/09/2019] [Accepted: 11/12/2019] [Indexed: 06/10/2023]
Abstract
Acetylcholinesterase (AChE) and general-esterase (GE) activities are important to understand detoxification processes of xenobiotics. The assays to quantify them have employed different substrates, inhibitors, types of experiments (in vitro and in vivo) and model organisms. The aim of this work was to give a systematic overview of the effect of the above factors on the outcome of AChE and GE activity measurements. We showed that AChE activity could be measured with the substrate acetylthiocholine iodide (AChI) but not with acetylcholine bromide (AChB) and only in in vitro assays. For GE activity, Michaelis-Menten kinetics differed between the substrates 4-methylumbellifery butyrate (4-MUB) and 1-naphtyl acetate (1-NA) in the measurements of in vitro activity, but their inhibition curves and IC50 values for the general inhibitor tetraisopropyl pyrophosphoramide (iso-OMPA) were similar, confirming that both substrates targeted the same group of enzymes. The GE substrate 4-MUB was applicable both in vitro and in vivo, while 1-NA was only applicable in vitro due to its high acute toxicity. When comparing the zooplankton crustacean Daphnia magna and the sediment dwelling Chironomus riparius, the latter had a four-fold higher maximal AChE activity (Vmax) and a higher susceptibility to the AChE inhibitor BW284c51 (four-fold lower 50% inhibitory concentration, IC50), but a lower maximal GE activity and lower susceptibility to iso-OMPA (higher IC50), indicating significant species differences between in C. riparius and D. magna. We conclude that both choice of substrate and exposure method matters for the outcome of esterase assays and that esterase compositions between species may vary significantly.
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Affiliation(s)
- Yi Cao
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.
| | - Laia Herrero-Nogareda
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.
| | - Nina Cedergreen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark.
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9
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María PJ, Carolina MG, María Ángeles PB. Understanding human salivary esterase activity and its variation under wine consumption conditions. RSC Adv 2020; 10:24352-24361. [PMID: 35516217 PMCID: PMC9055122 DOI: 10.1039/d0ra04624h] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 06/22/2020] [Indexed: 01/04/2023] Open
Abstract
Salivary esterase enzymes have been related to the in vitro hydrolysis of carboxylic esters associated with fruity and pleasant aroma nuances in many types of wine. However, very little is known about human total salivary esterase activity (TSEA) under physiological conditions. The purpose of this study is to gain understanding of TSEA and its relevance under wine consumption conditions. To do this, a methodology for TSEA measurement was optimised and applied to examine inter-individual differences (n = 10). Furthermore, TSEA was correlated with other salivary parameters (flow, pH, total protein content). The effect of the oral exposure to different types of wine-like solutions with different composition (ethanol, phenolic and aroma compounds) on TSEA was also assessed. Results showed large inter-individual differences, up to 86%, on TSEA values. Additionally, TSEA was positively correlated with the total salivary protein content (TPC) and negatively correlated with salivary pH and flow. After the oral exposure to wine-like solutions, the combined presence of ethanol, carboxylic esters and phenolic compounds produced the highest TSEA value. Results from this work prove that human salivary esterase is active during wine consumption, and adds support to the involvement of this enzymatic activity on wine aroma perception during wine intake, which will require future studies. Human salivary esterase is active during wine consumption supporting its potential involvement on the perception of odorant esters during wine intake.![]()
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Affiliation(s)
- Pérez-Jiménez María
- Instituto de Investigación en Ciencias de la Alimentación (CIAL)
- CSIC-UAM
- Madrid
- Spain
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10
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Su R, Ni K, Wang T, Yang X, Zhang J, Liu Y, Shi W, Yan L, Jie C, Zhong J. Effects of ferulic acid esterase-producing Lactobacillus fermentum and cellulase additives on the fermentation quality and microbial community of alfalfa silage. PeerJ 2019; 7:e7712. [PMID: 31608168 PMCID: PMC6788448 DOI: 10.7717/peerj.7712] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 08/21/2019] [Indexed: 12/02/2022] Open
Abstract
Background Alfalfa (Medicago sativa) is an important forage material widely used for animal feed production. Ensiling is an effective method for preserving alfalfa, but it has shown some limitations in the production of high-quality alfalfa silage due to its low water soluble carbohydrates (WSC) content and high buffering capacity. Lactic acid bacteria (LAB) and cellulase are often used as silage additives to promote the ensiling process and enhance fermentation quality. Methods Experiments were conducted to investigate the effects of ferulic acid esterase (FAE)-producing Lactobacillus fermentum 17SD-2 (LF) and cellulase (CE) on the fermentation quality and microbial community of alfalfa silage. After 60 days of ensiling, analysis of fermentation quality and bacterial diversity in alfalfa silages were conducted using high-performance liquid chromatography and high-throughput sequencing methods. Results Alfalfa was ensiled with additives (LF, CE, and LF+CE) or without additives for 60 days. All additives increased lactic acid and decreased pH values and ammonia-N contents compared to control. Among all treatments, the combined addition of LF and CE showed lowest pH (4.66) and ammonia-N (NH3-N, 0.57% DM) content, highest contents of lactic acid (LA, 10.51% DM), dry matter (DM, 22.54%) and crude protein (CP, 24.60% DM). Combined addition of LF and CE performed better in reducing neutral detergent fiber (NDF, 29.76% DM) and acid detergent fiber (ADF, 22.86% DM) contents than the addition of LF (33.71, 27.39% DM) or CE (32.07, 25.45% DM) alone. Moreover, the microbial analysis indicated that LF+CE treatments increased the abundance of desirable Lactobacillus and inhibited the growth of detrimental Enterobacter and Clostridia in alfalfa silage. Discussion Combined addition of FAE-producing LF and CE is more effective than treatments of LF or CE alone in improving fermentation quality and nutrition values of alfalfa silage. This is likely due to a synergistic effect of CE and FAE produced by LF on plant cell wall degradation, indicating that these additives promote each other to improve fiber degradation and silage fermentation. In conclusion, combined addition of FAE-producing LF and CE could be a feasible way to improve alfalfa silage quality.
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Affiliation(s)
- Rina Su
- School of Life Science, University of Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Kuikui Ni
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Tianwei Wang
- School of Life Science, University of Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Xiaopan Yang
- School of Life Science, University of Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Jie Zhang
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Yayong Liu
- School of Life Science, University of Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Weixiong Shi
- School of Life Science, University of Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Liu Yan
- Hebei Zhongyu Zhongke Biotechnology Development Company, Hebei, China
| | - Chen Jie
- Hebei Zhongyu Zhongke Biotechnology Development Company, Hebei, China
| | - Jin Zhong
- School of Life Science, University of Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
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11
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Held C, Stolzke T, Knierbein M, Jaworek MW, Luong TQ, Winter R, Sadowski G. Cosolvent and pressure effects on enzyme-catalysed hydrolysis reactions. Biophys Chem 2019; 252:106209. [DOI: 10.1016/j.bpc.2019.106209] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/18/2019] [Accepted: 06/18/2019] [Indexed: 12/13/2022]
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12
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Oliveira DM, Mota TR, Oliva B, Segato F, Marchiosi R, Ferrarese-Filho O, Faulds CB, Dos Santos WD. Feruloyl esterases: Biocatalysts to overcome biomass recalcitrance and for the production of bioactive compounds. BIORESOURCE TECHNOLOGY 2019; 278:408-423. [PMID: 30704902 DOI: 10.1016/j.biortech.2019.01.064] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 01/14/2019] [Accepted: 01/16/2019] [Indexed: 05/25/2023]
Abstract
Ferulic acid and its hydroxycinnamate derivatives represent one of the most abundant forms of low molecular weight phenolic compounds in plant biomass. Feruloyl esterases are part of a microorganism's plant cell wall-degrading enzymatic arsenal responsible for cleaving insoluble wall-bound hydroxycinnamates and soluble cytosolic conjugates. Stimulated by industrial requirements, accelerating scientific discoveries and knowledge transfer, continuous improvement efforts have been made to identify, create and repurposed biocatalysts dedicated to plant biomass conversion and biosynthesis of high-added value molecules. Here we review the basic knowledge and recent advances in biotechnological characteristics and the gene content encoding for feruloyl esterases. Information about several enzymes is systematically organized according to their function, biochemical properties, substrate specificity, and biotechnological applications. This review contributes to further structural, functional, and biotechnological R&D both for obtaining hydroxycinnamates from agricultural by-products as well as for lignocellulose biomass treatments aiming for production of bioethanol and other derivatives of industrial interest.
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Affiliation(s)
- Dyoni M Oliveira
- Department of Biochemistry, State University of Maringá, Maringá, Paraná, Brazil.
| | - Thatiane R Mota
- Department of Biochemistry, State University of Maringá, Maringá, Paraná, Brazil
| | - Bianca Oliva
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo, Lorena, São Paulo, Brazil
| | - Fernando Segato
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo, Lorena, São Paulo, Brazil
| | - Rogério Marchiosi
- Department of Biochemistry, State University of Maringá, Maringá, Paraná, Brazil
| | | | - Craig B Faulds
- Aix-Marseille Université, INRA UMR 1163 Biodiversité et Biotechnologie Fongiques (BBF), 13009 Marseille, France
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13
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Lu M, Dukunde A, Daniel R. Biochemical profiles of two thermostable and organic solvent-tolerant esterases derived from a compost metagenome. Appl Microbiol Biotechnol 2019; 103:3421-3437. [PMID: 30809711 DOI: 10.1007/s00253-019-09695-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 02/11/2019] [Accepted: 02/12/2019] [Indexed: 12/15/2022]
Abstract
Owing to the functional versatility and potential applications in industry, interest in lipolytic enzymes tolerant to organic solvents is increasing. In this study, functional screening of a compost soil metagenome resulted in identification of two lipolytic genes, est1 and est2, encoding 270 and 389 amino acids, respectively. The two genes were heterologously expressed and characterized. Est1 and Est2 are thermostable enzymes with optimal enzyme activities at 80 and 70 °C, respectively. A second-order rotatable design, which allows establishing the relationship between multiple variables with the obtained responses, was used to explore the combined effects of temperature and pH on esterase stability. The response curve indicated that Est1, and particularly Est2, retained high stability within a broad range of temperature and pH values. Furthermore, the effects of organic solvents on Est1 and Est2 activities and stabilities were assessed. Notably, Est2 activity was significantly enhanced (two- to tenfold) in the presence of ethanol, methanol, isopropanol, and 1-propanol over a concentration range between 6 and 30% (v/v). For the short-term stability (2 h of incubation), Est2 exhibited high tolerance against 60% (v/v) of ethanol, methanol, isopropanol, DMSO, and acetone, while Est1 activity resisted these solvents only at lower concentrations (below 30%, v/v). Est2 also displayed high stability towards some water-immiscible organic solvents, such as ethyl acetate, diethyl ether, and toluene. With respect to long-term stability, Est2 retained most of its activity after 26 days of incubation in the presence of 30% (v/v) ethanol, methanol, isopropanol, DMSO, or acetone. All of these features indicate that Est1 and Est2 possess application potential.
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Affiliation(s)
- Mingji Lu
- Department of Genomic and Applied Microbiology, Göttingen Genomics Laboratory, Institute of Microbiology and Genetics, Georg-August-University of Göttingen, Grisebachstraße 8, 37077, Göttingen, Germany
| | - Amélie Dukunde
- Department of Genomic and Applied Microbiology, Göttingen Genomics Laboratory, Institute of Microbiology and Genetics, Georg-August-University of Göttingen, Grisebachstraße 8, 37077, Göttingen, Germany
| | - Rolf Daniel
- Department of Genomic and Applied Microbiology, Göttingen Genomics Laboratory, Institute of Microbiology and Genetics, Georg-August-University of Göttingen, Grisebachstraße 8, 37077, Göttingen, Germany.
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14
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Antonopoulou I, Iancu L, Jütten P, Piechot A, Rova U, Christakopoulos P. Screening of novel feruloyl esterases from Talaromyces wortmannii for the development of efficient and sustainable syntheses of feruloyl derivatives. Enzyme Microb Technol 2018; 120:124-135. [PMID: 30396393 DOI: 10.1016/j.enzmictec.2018.08.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 08/22/2018] [Accepted: 08/23/2018] [Indexed: 01/22/2023]
Abstract
The feruloyl esterases Fae125, Fae7262 and Fae68 from Talaromyces wortmannii were screened in 10 different solvent: buffer systems in terms of residual hydrolytic activity and of the ability for the transesterification of vinyl ferulate with prenol or l-arabinose. Among the tested enzymes, the acetyl xylan-related Fae125 belonging to the phylogenetic subfamily 5 showed highest yield and selectivity for both products in alkane: buffer systems (n-hexane or n-octane). Response surface methodology, based on a 5-level and 6-factor central composite design, revealed that the substrate molar ratio and the water content were the most significant variables for the bioconversion yield and selectivity. The effect of agitation, the possibility of DMSO addition and the increase of donor concentration were investigated. After optimization, competitive transesterification yields were obtained for prenyl ferulate (87.5-92.6%) and l-arabinose ferulate (56.2-61.7%) at reduced reaction times (≤24 h) resulting in good productivities (>1 g/L/h, >300 kg product/kg FAE). The enzyme could be recycled for six consecutive cycles retaining 66.6% of the synthetic activity and 100% of the selectivity.
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Affiliation(s)
- Io Antonopoulou
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-97187, Luleå, Sweden
| | - Laura Iancu
- Dupont Industrial Biosciences, Nieuwe Kanaal 7-S, 6709 PA, Wageningen, The Netherlands
| | - Peter Jütten
- Taros Chemicals GmbH & Co KG, Emil-Figge-Str. 76a, 44227, Dortmund, Germany
| | - Alexander Piechot
- Taros Chemicals GmbH & Co KG, Emil-Figge-Str. 76a, 44227, Dortmund, Germany
| | - Ulrika Rova
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-97187, Luleå, Sweden
| | - Paul Christakopoulos
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-97187, Luleå, Sweden.
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15
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The Synthetic Potential of Fungal Feruloyl Esterases: A Correlation with Current Classification Systems and Predicted Structural Properties. Catalysts 2018. [DOI: 10.3390/catal8060242] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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16
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Eltarahony M, Zaki S, Kheiralla Z, Abd-El-Haleem D. NAP enzyme recruitment in simultaneous bioremediation and nanoparticles synthesis. ACTA ACUST UNITED AC 2018; 18:e00257. [PMID: 29876306 PMCID: PMC5989592 DOI: 10.1016/j.btre.2018.e00257] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 05/15/2018] [Accepted: 05/15/2018] [Indexed: 11/30/2022]
Abstract
This study employed the immobilized strain MMT and its NAP enzyme in concurrent denitrification and NPs synthesis. The properties of crude NAP enzyme were assessed at different ranges of pH and temperatures and also its stability at 4 °C and 30 °C was studied. The effect of several types of additives were evaluated at concentration rang (1 mM, 2.5 mM, 5 mM and 10 mM). Concurrently, the immobilized MMT cells completely removed NO3− upon 8th day with AgNPs synthesis ranging from 23.26 to 58.14. Immobilized NAP exhibited lower efficiency with 28.6% of NO3 elimination and large aggregated AgNPs ranging from 94.44 nm to 172.22 nm.
The periplasmic nitrate reductase enzyme (NAP) has become attractive catalyst, whose exploitation has emerged as one of the indispensable strategies toward environmentally benign applications. To achieve them efficiently and overcome the sensitivity of NAP in harsh environmental circumstances, the immobilization for denitrifying bacteria and NAP enzyme for simultaneous bioremediation and bionanoparticles synthesis was studied. NAP catalyzed NO3− reduction at Vmax of 0.811 μM/min and Km of 14.02 mM. Concurrently, the immobilized MMT cells completely removed NO3- upon 192 h with AgNPs synthesis ranging from 23.26 to 58.14 nm as indicated by SEM. Wherase, immobilized NAP exhibited lower efficiency with 28.6% of NO3− elimination within 288 h and large aggregated AgNPs ranging from 94.44 nm to 172.22 nm. To the best of author knowledge, the immobilization for denitrifying bacteria and NAP enzyme for simultaneous bioremediation and bionanoparticles synthesis was not studied before.
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Affiliation(s)
- Marwa Eltarahony
- Environmental Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, 21934 Borgelarab, Alexandria, Egypt
| | - Sahar Zaki
- Environmental Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, 21934 Borgelarab, Alexandria, Egypt
| | - Zeinab Kheiralla
- Botany Department, College of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt
| | - Desouky Abd-El-Haleem
- Environmental Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, 21934 Borgelarab, Alexandria, Egypt
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17
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Cross-Linked Enzyme Aggregates of Feruloyl Esterase Preparations from Thermothelomyces thermophila and Talaromyces wortmannii. Catalysts 2018. [DOI: 10.3390/catal8050208] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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18
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van Haren MJ, Thomas MG, Sartini D, Barlow DJ, Ramsden DB, Emanuelli M, Klamt F, Martin NI, Parsons RB. The kinetic analysis of the N-methylation of 4-phenylpyridine by nicotinamide N-methyltransferase: Evidence for a novel mechanism of substrate inhibition. Int J Biochem Cell Biol 2018; 98:127-136. [PMID: 29549048 DOI: 10.1016/j.biocel.2018.03.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 02/23/2018] [Accepted: 03/12/2018] [Indexed: 12/17/2022]
Abstract
The N-methylation of 4-phenylpyridine produces the neurotoxin 1-methyl-4-phenylpyridinium ion (MPP+). We investigated the kinetics of 4-phenylpyridine N-methylation by nicotinamide N-methyltransferase (NNMT) and its effect upon 4-phenylpyridine toxicity in vitro. Human recombinant NNMT possessed 4-phenylpyridine N-methyltransferase activity, with a specific activity of 1.7 ± 0.03 nmol MPP+ produced/h/mg NNMT. Although the Km for 4-phenylpyridine was similar to that reported for nicotinamide, its kcat of 9.3 × 10-5 ± 2 × 10-5 s-1 and specificity constant, kcat/Km, of 0.8 ± 0.8 s-1 M-1 were less than 0.15% of the respective values for nicotinamide, demonstrating that 4-phenylpyridine is a poor substrate for NNMT. At low (<2.5 mM) substrate concentration, 4-phenylpyridine N-methylation was competitively inhibited by dimethylsulphoxide, with a Ki of 34 ± 8 mM. At high (>2.5 mM) substrate concentration, enzyme activity followed substrate inhibition kinetics, with a Ki of 4 ± 1 mM. In silico molecular docking suggested that 4-phenylpyridine binds to the active site of NNMT in two non-redundant poses, one a substrate binding mode and the other an inhibitory mode. Finally, the expression of NNMT in the SH-SY5Y cell-line had no effect cell death, viability, ATP content or mitochondrial membrane potential. These data demonstrate that 4-phenylpyridine N-methylation by NNMT is unlikely to serve as a source of MPP+. The possibility for competitive inhibition by dimethylsulphoxide should be considered in NNMT-based drug discovery studies. The potential for 4-phenylpyridine to bind to the active site in two binding orientations using the same active site residues is a novel mechanism of substrate inhibition.
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Affiliation(s)
- Matthijs J van Haren
- Utrecht University, Utrecht Institute for Pharmaceutical Science, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Martin G Thomas
- King's College London, Institute of Pharmaceutical Science, 150 Stamford Street, London SE1 9NH, UK
| | - Davide Sartini
- Universitá Politecnica delle Marche, Department of Clinical Sciences, School of Medicine, Ancona, Italy
| | - David J Barlow
- King's College London, Institute of Pharmaceutical Science, 150 Stamford Street, London SE1 9NH, UK
| | - David B Ramsden
- University of Birmingham, Institute of Metabolism and Systems Research, Edgbaston, Birmingham B15 2TH, UK
| | - Monica Emanuelli
- Universitá Politecnica delle Marche, Department of Clinical Sciences, School of Medicine, Ancona, Italy
| | - Fábio Klamt
- Universidade Federal do Rio Grande do Sul, Departmento de Bioquímica, Instituto de Ciêncas Básicas de Saúde, Rua Ramiro Barcelos, Porto Alegre, RS 90035 003, Brazil
| | - Nathaniel I Martin
- Utrecht University, Utrecht Institute for Pharmaceutical Science, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands.
| | - Richard B Parsons
- King's College London, Institute of Pharmaceutical Science, 150 Stamford Street, London SE1 9NH, UK.
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19
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Brzonova I, Asina F, Andrianova AA, Kubátová A, Smoliakova IP, Kozliak EI, Ji Y. Fungal Biotransformation of Insoluble Kraft Lignin into a Water Soluble Polymer. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04822] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Ivana Brzonova
- Department of Chemical Engineering and ‡Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Fnu Asina
- Department of Chemical Engineering and ‡Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Anastasia A. Andrianova
- Department of Chemical Engineering and ‡Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Alena Kubátová
- Department of Chemical Engineering and ‡Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Irina P. Smoliakova
- Department of Chemical Engineering and ‡Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Evguenii I. Kozliak
- Department of Chemical Engineering and ‡Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Yun Ji
- Department of Chemical Engineering and ‡Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
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20
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Chaudhari SA, Singhal RS. A strategic approach for direct recovery and stabilization of Fusarium sp. ICT SAC1 cutinase from solid state fermented broth by carrier free cross-linked enzyme aggregates. Int J Biol Macromol 2017; 98:610-621. [PMID: 28192137 DOI: 10.1016/j.ijbiomac.2017.02.033] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Revised: 02/07/2017] [Accepted: 02/08/2017] [Indexed: 11/18/2022]
Abstract
The major hurdles in commercial exploitation of cutinase (having both esterolytic and lipolytic activities) with potent industrial applications are its high production cost, operational instability and reusability. Although commercially available in immobilized form, its immobilization process (synthesis of support/carrier) makes it expensive. Herein we tried to address multiple issues of production cost, stability, and reusability, associated with cutinase. Waste watermelon rinds, an agroindustrial waste was considered as a cheap support for solid state fermentation (SSF) for cutinase production by newly isolated Fusarium sp. ICT SAC1. Subsequently, carrier free cross-linked enzyme aggregates of cutinase (cut-CLEA) directly from the SSF crude broth were developed. All the process variables affecting CLEA formation along with the different additives were evaluated. It was found that 50% (w/v) of ammonium sulphate, 125μmol of glutaraldehyde, cross-linking for 1h at 30°C and broth pH of 7.0, yielded 58.12% activity recovery. All other additives (hexane, butyric acid, sodium dodecyl sulphate, Trition-X 100, Tween-20, BSA) evaluated presented negative results to our hypothesis. Kinetics and morphology studies confirmed the diffusive nature of cut-CLEA and BSA cut-CLEA. Developed CLEA showed better thermal, solvent, detergent and storage stability, making it more elegant and efficient for industrial biocatalytic process.
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Affiliation(s)
- Sandeep A Chaudhari
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai-400019, India
| | - Rekha S Singhal
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai-400019, India.
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21
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An acidic feruloyl esterase from the mushroom Lactarius hatsudake : A potential animal feed supplement. Int J Biol Macromol 2016; 93:290-295. [DOI: 10.1016/j.ijbiomac.2016.08.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 08/05/2016] [Accepted: 08/08/2016] [Indexed: 01/30/2023]
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22
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Schär A, Sprecher I, Topakas E, Faulds CB, Nyström L. Hydrolysis of Nonpolar n-Alkyl Ferulates by Feruloyl Esterases. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:8549-8554. [PMID: 27600375 DOI: 10.1021/acs.jafc.6b02694] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ferulic acid is one of the major phenolic acids in plants and can be found esterified to plant cell wall components, but also as long-chain n-alkyl and steryl esters. Microbial feruloyl esterases may play a role in the bioavailability of phenolic acids during human and animal digestion. It is therefore of interest if feruloyl esterases are capable of hydrolyzing nonpolar ferulic acid esters. A series of n-alkyl ferulates with increasing lipophilicity were enzymatically synthesized, and the kinetic constants of their hydrolysis by four feruloyl esterases and a lipase as control were determined. A decrease in Km and kcat could be observed with decreased substrate polarity for all of the feruloyl esterases. Only one feruloyl esterase and the control lipase showed hydrolytic activity toward octadecyl ferulate. These results led to the conclusion that lipophilic ferulates are poor substrates for known feruloyl esterases and more specific esterases/lipases need to be identified.
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Affiliation(s)
- Aline Schär
- Institute of Food, Nutrition and Health, ETH Zurich , Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
| | - Isabel Sprecher
- Institute of Food, Nutrition and Health, ETH Zurich , Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
| | - Evangelos Topakas
- Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens , 5 Iroon Polytechniou Str., Zografou Campus, 15700 Athens, Greece
| | - Craig B Faulds
- Aix Marseille Université , INRA BBF UMR_A 1163 Biodiversité et Biotechnologie Fongiques, 13288 Marseille cedex 02, France
- INRA BBF UMR_A1163, Polytech Marseille , 163 Avenue de Luminy, 13288 Marseille cedex 02, France
| | - Laura Nyström
- Institute of Food, Nutrition and Health, ETH Zurich , Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
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23
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Hong DK, Jang SH, Lee C. Gene cloning and characterization of a psychrophilic phthalate esterase with organic solvent tolerance from an Arctic bacterium Sphingomonas glacialis PAMC 26605. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2017.02.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Insight into the mechanism behind the activation phenomenon of lipase from Thermus thermophilus HB8 in polar organic solvents. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2017.03.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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26
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Gopalan N, Nampoothiri KM, Szakacs G, Parameswaran B, Pandey A. Solid-state fermentation for the production of biomass valorizing feruloyl esterase. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2016. [DOI: 10.1016/j.bcab.2016.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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27
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Kozarski M, Klaus A, Vunduk J, Zizak Z, Niksic M, Jakovljevic D, Vrvic MM, Van Griensven LJLD. Nutraceutical properties of the methanolic extract of edible mushroom Cantharellus cibarius (Fries): primary mechanisms. Food Funct 2016; 6:1875-86. [PMID: 25943486 DOI: 10.1039/c5fo00312a] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The methanolic extract of the wild edible mushroom Cantharellus cibarius Fr. (chanterelle) was analyzed for in vitro antioxidative, cytotoxic, antihypertensive and antibacterial activities. Various primary and secondary metabolites were found. Phenols were the major antioxidant components found in the extract (49.8 mg g(-1)), followed by flavonoids, whose content was approximately 86% of the total phenol content. Antioxidant activity, measured by four different methods, was high for inhibition of lipid peroxidation (EC50 = 1.21 mg mL(-1)) and chelating ability (EC50 = 0.64 mg mL(-1)). The antioxidant activity of the C. cibarius methanol extract was achieved through chelating iron compared to hydrogen atom and/or electron transfer. The extract showed good selectivity in cytotoxicity on human cervix adenocarcinoma HeLa, breast carcinoma MDA-MB-453 and human myelogenous leukemia K562, compared to normal control human fetal lung fibroblasts MRC-5 and human lung bronchial epithelial cells BEAS-2B. The extract had inhibitory activity against angiotensin converting I enzyme (ACE) (IC50 = 0.063 mg mL(-1)). The extract revealed selective antimicrobial activity against Gram-positive bacteria with the highest potential against E. faecalis. The medicinal and health benefits, observed in wild C. cibarius mushroom, seem an additional reason for its traditional use as a popular delicacy food.
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Affiliation(s)
- Maja Kozarski
- Department for Chemistry and Biochemistry, Faculty of Agriculture, University of Belgrade, Nemanjina 6, Belgrade 11080, Serbia
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28
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Wilding B, Veselá AB, Perry JJB, Black GW, Zhang M, Martínková L, Klempier N. An investigation of nitrile transforming enzymes in the chemo-enzymatic synthesis of the taxol sidechain. Org Biomol Chem 2016; 13:7803-12. [PMID: 26107443 DOI: 10.1039/c5ob01191d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Paclitaxel (taxol) is an antimicrotubule agent widely used in the treatment of cancer. Taxol is prepared in a semisynthetic route by coupling the N-benzoyl-(2R,3S)-3-phenylisoserine sidechain to the baccatin III core structure. Precursors of the taxol sidechain have previously been prepared in chemoenzymatic approaches using acylases, lipases, and reductases, mostly featuring the enantioselective, enzymatic step early in the reaction pathway. Here, nitrile hydrolysing enzymes, namely nitrile hydratases and nitrilases, are investigated for the enzymatic hydrolysis of two different sidechain precursors. Both sidechain precursors, an openchain α-hydroxy-β-amino nitrile and a cyanodihydrooxazole, are suitable for coupling to baccatin III directly after the enzymatic step. An extensive set of nitrilases and nitrile hydratases was screened towards their activity and selectivity in the hydrolysis of two taxol sidechain precursors and their epimers. A number of nitrilases and nitrile hydratases converted both sidechain precursors and their epimers.
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Affiliation(s)
- Birgit Wilding
- acib GmbH (Austrian Centre of Industrial Biotechnology), c/o Institute of Organic Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria.
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29
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Fang Y, Wang S, Liu S, Jiao Y. Discovery a novel organic solvent tolerant esterase from Salinispora arenicola CNP193 through genome mining. Int J Biol Macromol 2015; 80:334-40. [PMID: 26118483 DOI: 10.1016/j.ijbiomac.2015.06.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 06/22/2015] [Accepted: 06/23/2015] [Indexed: 12/15/2022]
Abstract
An esterase gene, encoding a 325-amino-acid protein (SAestA), was mined form obligate marine actinomycete strain Salinispora arenicola CNP193 genome sequence. Phylogenetic analysis of the deduced amino acid sequence showed that the enzyme belonged to the family IV of lipolytic enzymes. The gene was cloned, expressed in Escherichia coli as a His-tagged protein, purified and characterized. The molecular weight of His-tagged SAestA is ∼38 kDa. SAestA-His6 was active in a temperature (5-40 °C) and pH range (7.0-11.0), and maximal activity was determined at pH 9.0 and 30 °C. The activity was severely inhibited by Hg(2+), Cu(2+), and Zn(2+). In particular, this enzyme showed remarkable stability in presence of organic solvents (25%, v/v) with log P>2.0 even after incubation for 7 days. All these characteristics suggested that SAestA may be a potential candidate for application in industrial processes in aqueous/organic media.
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Affiliation(s)
- Yaowei Fang
- Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Huaihai Institute of Technology, Lianyungang, 222005, China; Jiangsu Marine Resources Development Research Institute, Lianyungang, 222000, China; Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Huaihai Institute of Technology, Lianyungang, 222005, China
| | - Shujun Wang
- Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Huaihai Institute of Technology, Lianyungang, 222005, China; Jiangsu Marine Resources Development Research Institute, Lianyungang, 222000, China; Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Huaihai Institute of Technology, Lianyungang, 222005, China
| | - Shu Liu
- Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Huaihai Institute of Technology, Lianyungang, 222005, China; Jiangsu Marine Resources Development Research Institute, Lianyungang, 222000, China; Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Huaihai Institute of Technology, Lianyungang, 222005, China
| | - Yuliang Jiao
- Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Huaihai Institute of Technology, Lianyungang, 222005, China; Jiangsu Marine Resources Development Research Institute, Lianyungang, 222000, China; Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Huaihai Institute of Technology, Lianyungang, 222005, China
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30
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Li J, Jin X, Liu Y, Li F, Zhang L, Zhu X, Lu Y. Robust enzyme–silica composites made from enzyme nanocapsules. Chem Commun (Camb) 2015; 51:9628-31. [DOI: 10.1039/c5cc02053k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel enzyme composites are synthesized first by in situ polymerization around enzymes and a subsequent sol–gel process. Both the polymer shell and the silica shell with desired functional moieties provide not only great enzyme protection but also a favorable microenvironment, resulting in significantly enhanced activity and stability.
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Affiliation(s)
- Jie Li
- Department of Chemical and Biomolecular Engineering
- University of California
- Los Angeles
- Los Angeles
- USA
| | - Xin Jin
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- P. R. China
| | - Yang Liu
- Department of Chemical and Biomolecular Engineering
- University of California
- Los Angeles
- Los Angeles
- USA
| | - Fan Li
- Department of Chemical and Biomolecular Engineering
- University of California
- Los Angeles
- Los Angeles
- USA
| | - Linlin Zhang
- Department of Chemical and Biomolecular Engineering
- University of California
- Los Angeles
- Los Angeles
- USA
| | - Xianyuan Zhu
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- P. R. China
| | - Yunfeng Lu
- Department of Chemical and Biomolecular Engineering
- University of California
- Los Angeles
- Los Angeles
- USA
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31
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Pérez-Boada M, Prieto A, Prinsen P, Forquin-Gomez MP, del Río JC, Gutiérrez A, Martínez ÁT, Faulds CB. Enzymatic degradation of Elephant grass (Pennisetum purpureum) stems: influence of the pith and bark in the total hydrolysis. BIORESOURCE TECHNOLOGY 2014; 167:469-75. [PMID: 25006023 DOI: 10.1016/j.biortech.2014.06.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 06/05/2014] [Accepted: 06/07/2014] [Indexed: 05/11/2023]
Abstract
The internal pith of a high energy plant, Elephant grass (EG), was more extensively degraded (>50% dry matter) compared to the outer cortex (31%) or the whole stem (35%) by an enzyme preparation from Humicola insolens, Ultraflo. Reducing sugars and acetic acid release from the pith was also higher compared to the cortex. Supplementation of Ultraflo with a type-C feruloyl esterase increased the level of deacetylation but also led to reduced solubilisation. The addition of 20% dimethyl sulfoxide (DMSO) as a co-solvent also reduced the solubility of EG by Ultraflo, although acetic acid release was increased, complimenting previous results found on model substrates. The presence of DMSO was also shown to have a protective effect on xylanase activity but not acetyl esterase activity in Ultraflo. Xylan in the biomass was preferentially solubilised by DMSO, while Ultraflo removed more glucose than xylose.
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Affiliation(s)
- Marta Pérez-Boada
- Centro de Investigaciones Biológicas, Campus Universidad, Ramiro de Maeztu 9, 28040 Madrid, Spain.
| | - Alicia Prieto
- Centro de Investigaciones Biológicas, Campus Universidad, Ramiro de Maeztu 9, 28040 Madrid, Spain.
| | - Pepijn Prinsen
- Department of Plant Biotechnology, Instituto de Recursos Naturales y Agrobiológicas de Sevilla, CSIC, Sevilla, Spain.
| | - Marie-Pierre Forquin-Gomez
- INRA, UMR 1163 Biotechnologie des Champignons Filamenteux, 163 avenue de Luminy, 13288 Marseille cedex 09, France; Aix-Marseille Université, POLYTECH Marseille, UMR 1163 Biotechnologie des Champignons Filamenteux, 163 avenue de Luminy, 13288 Marseille cedex 09, France.
| | - José Carlos del Río
- Department of Plant Biotechnology, Instituto de Recursos Naturales y Agrobiológicas de Sevilla, CSIC, Sevilla, Spain.
| | - Ana Gutiérrez
- Department of Plant Biotechnology, Instituto de Recursos Naturales y Agrobiológicas de Sevilla, CSIC, Sevilla, Spain.
| | - Ángel T Martínez
- Centro de Investigaciones Biológicas, Campus Universidad, Ramiro de Maeztu 9, 28040 Madrid, Spain.
| | - Craig B Faulds
- Centro de Investigaciones Biológicas, Campus Universidad, Ramiro de Maeztu 9, 28040 Madrid, Spain; INRA, UMR 1163 Biotechnologie des Champignons Filamenteux, 163 avenue de Luminy, 13288 Marseille cedex 09, France; Aix-Marseille Université, POLYTECH Marseille, UMR 1163 Biotechnologie des Champignons Filamenteux, 163 avenue de Luminy, 13288 Marseille cedex 09, France.
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32
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López G, Chow J, Bongen P, Lauinger B, Pietruszka J, Streit WR, Baena S. A novel thermoalkalostable esterase from Acidicaldus sp. strain USBA-GBX-499 with enantioselectivity isolated from an acidic hot springs of Colombian Andes. Appl Microbiol Biotechnol 2014; 98:8603-16. [PMID: 24818691 DOI: 10.1007/s00253-014-5775-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 04/09/2014] [Accepted: 04/12/2014] [Indexed: 12/28/2022]
Abstract
Several thermo- and mesoacidophilic bacterial strains that revealed high lipolytic activity were isolated from water samples derived from acidic hot springs in Los Nevados National Natural Park (Colombia). A novel lipolytic enzyme named 499EST was obtained from the thermoacidophilic alpha-Proteobacterium Acidicaldus USBA-GBX-499. The gene estA encoded a 313-amino-acid protein named 499EST. The deduced amino acid sequence showed the highest identity (58 %) with a putative α/β hydrolase from Acidiphilium sp. (ZP_08632277.1). Sequence alignments and phylogenetic analysis indicated that 499EST is a new member of the bacterial esterase/lipase family IV. The esterase reveals its optimum catalytic activity at 55 °C and pH 9.0. Kinetic studies showed that 499EST preferentially hydrolyzed middle-length acyl chains (C6-C8), especially p-nitrophenyl (p-NP) caproate (C6). Its thermostability and activity were strongly enhanced by adding 6 mM FeCl3. High stability in the presence of water-miscible solvents such as dimethyl sulfoxide and glycerol was observed. This enzyme also exhibits stability under harsh environmental conditions and enantioselectivity towards naproxen and ibuprofen esters, yielding the medically relevant (S)-enantiomers. In conclusion, according to our knowledge, 499EST is the first thermoalkalostable esterase derived from a Gram-negative thermoacidophilic bacterium.
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Affiliation(s)
- Gina López
- Unidad de Saneamiento y Biotecnología Ambiental, Departamento de Biología, Pontificia Universidad Javeriana, POB 56710, Bogotá, DC, Colombia
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Nieter A, Haase-Aschoff P, Linke D, Nimtz M, Berger RG. A halotolerant type A feruloyl esterase from Pleurotus eryngii. Fungal Biol 2014; 118:348-57. [PMID: 24607359 DOI: 10.1016/j.funbio.2014.01.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 01/24/2014] [Accepted: 01/25/2014] [Indexed: 11/16/2022]
Abstract
An extracellular feruloyl esterase (PeFaeA) from the culture supernatant of Pleurotus eryngii was purified to homogeneity using cation exchange, hydrophobic interaction, and size exclusion chromatography. The length of the complete coding sequence of PeFaeA was determined to 1668 bp corresponding to a protein of 555 amino acids. The catalytic triad of Ser-Glu-His demonstrated the uniqueness of the enzyme compared to previously published FAEs. The purified PeFaeA was a monomer with an estimated molecular mass of 67 kDa. Maximum feruloyl esterase (FAE) activity was observed at pH 5.0 and 50 °C, respectively. Metal ions (5 mM), except Hg(2+), had no significant influence on the enzyme activity. Substrate specificity profiling characterized the enzyme as a type A FAE preferring bulky natural substrates, such as feruloylated saccharides, rather than small synthetic ones. Km and kcat of the purified enzyme for methyl ferulate were 0.15 mM and 0.85 s(-1). In the presence of 3 M NaCl activity of the enzyme increased by 28 %. PeFaeA alone released only little ferulic acid from destarched wheat bran (DSWB), whereas after addition of Trichoderma viride xylanase the concentration increased more than 20 fold.
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Affiliation(s)
- Annabel Nieter
- Institut für Lebensmittelchemie, Leibniz Universität Hannover, Callinstraße 5, D-30167 Hannover, Germany.
| | - Paul Haase-Aschoff
- Institut für Lebensmittelchemie, Leibniz Universität Hannover, Callinstraße 5, D-30167 Hannover, Germany
| | - Diana Linke
- Institut für Lebensmittelchemie, Leibniz Universität Hannover, Callinstraße 5, D-30167 Hannover, Germany
| | - Manfred Nimtz
- Helmholtz Zentrum für Infektionsforschung, Inhoffenstraße 7, D-38124 Braunschweig, Germany
| | - Ralf G Berger
- Institut für Lebensmittelchemie, Leibniz Universität Hannover, Callinstraße 5, D-30167 Hannover, Germany
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Stepankova V, Khabiri M, Brezovsky J, Pavelka A, Sykora J, Amaro M, Minofar B, Prokop Z, Hof M, Ettrich R, Chaloupkova R, Damborsky J. Expansion of Access Tunnels and Active-Site Cavities Influence Activity of Haloalkane Dehalogenases in Organic Cosolvents. Chembiochem 2013; 14:890-7. [DOI: 10.1002/cbic.201200733] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2012] [Indexed: 11/11/2022]
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Stepankova V, Damborsky J, Chaloupkova R. Organic co-solvents affect activity, stability and enantioselectivity of haloalkane dehalogenases. Biotechnol J 2013; 8:719-29. [PMID: 23420811 DOI: 10.1002/biot.201200378] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 01/21/2013] [Accepted: 02/12/2013] [Indexed: 01/12/2023]
Abstract
Haloalkane dehalogenases are microbial enzymes with a wide range of biotechnological applications, including biocatalysis. The use of organic co-solvents to solubilize their hydrophobic substrates is often necessary. In order to choose the most compatible co-solvent, the effects of 14 co-solvents on activity, stability and enantioselectivity of three model enzymes, DbjA, DhaA, and LinB, were evaluated. All co-solvents caused at high concentration loss of activity and conformational changes. The highest inactivation was induced by tetrahydrofuran, while more hydrophilic co-solvents, such as ethylene glycol and dimethyl sulfoxide, were better tolerated. The effects of co-solvents at low concentration were different for each enzyme-solvent pair. An increase in DbjA activity was induced by the majority of organic co-solvents tested, while activities of DhaA and LinB decreased at comparable concentrations of the same co-solvent. Moreover, a high increase of DbjA enantioselectivity was observed. Ethylene glycol and 1,4-dioxane were shown to have the most positive impact on the enantioselectivity. The favorable influence of these co-solvents on both activity and enantioselectivity makes DbjA suitable for biocatalytic applications. This study represents the first investigation of the effects of organic co-solvents on the biocatalytic performance of haloalkane dehalogenases and will pave the way for their broader use in industrial processes.
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Affiliation(s)
- Veronika Stepankova
- Loschmidt Laboratories, Department of Experimental Biology and Research Centre for Toxic Compounds in the Environment, Masaryk University, Brno, Czech Republic
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Salvachúa D, Prieto A, Mattinen ML, Tamminen T, Liitiä T, Lille M, Willför S, Martínez AT, Martínez MJ, Faulds CB. Versatile peroxidase as a valuable tool for generating new biomolecules by homogeneous and heterogeneous cross-linking. Enzyme Microb Technol 2013; 52:303-11. [PMID: 23608497 DOI: 10.1016/j.enzmictec.2013.03.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Revised: 02/15/2013] [Accepted: 03/04/2013] [Indexed: 10/27/2022]
Abstract
The modification and generation of new biomolecules intended to give higher molecular-mass species for biotechnological purposes, can be achieved by enzymatic cross-linking. The versatile peroxidase (VP) from Pleurotus eryngii is a high redox-potential enzyme with oxidative activity on a wide variety of substrates. In this study, VP was successfully used to catalyze the polymerization of low molecular mass compounds, such as lignans and peptides, as well as larger macromolecules, such as protein and complex polysaccharides. Different analytical, spectroscopic, and rheological techniques were used to determine structural changes and/or variations of the physicochemical properties of the reaction products. The lignans secoisolariciresinol and hydroxymatairesinol were condensed by VP forming up to 8 unit polymers in the presence of organic co-solvents and Mn(2+). Moreover, 11 unit of the peptides YIGSR and VYV were homogeneously cross-linked. The heterogeneous cross-linking of one unit of the peptide YIGSR and several lignan units was also achieved. VP could also induce gelation of feruloylated arabinoxylan and the polymerization of β-casein. These results demonstrate the efficacy of VP to catalyze homo- and hetero-condensation reactions, and reveal its potential exploitation for polymerizing different types of compounds.
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Affiliation(s)
- Davinia Salvachúa
- Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, E-28040 Madrid, Spain
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Aldehyde Oxidase Activity and Stability in Water-Miscible Organic Solvents. Appl Biochem Biotechnol 2013; 169:901-10. [DOI: 10.1007/s12010-012-0036-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Accepted: 12/13/2012] [Indexed: 10/27/2022]
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Chiş L, Hriscu M, Bica A, Toşa M, Nagy G, Róna G, G. Vértessy B, Dan Irimie F. Molecular cloning and characterization of a thermostable esterase/lipase produced by a novel Anoxybacillus flavithermus strain. J GEN APPL MICROBIOL 2013; 59:119-34. [DOI: 10.2323/jgam.59.119] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Niemi P, Faulds CB, Sibakov J, Holopainen U, Poutanen K, Buchert J. Effect of a milling pre-treatment on the enzymatic hydrolysis of carbohydrates in brewer's spent grain. BIORESOURCE TECHNOLOGY 2012; 116:155-160. [PMID: 22609670 DOI: 10.1016/j.biortech.2012.04.043] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 04/11/2012] [Accepted: 04/13/2012] [Indexed: 06/01/2023]
Abstract
Millions of tonnes of brewer's spent grain (BSG) are annually produced worldwide as a by-product of the brewing industry. BSG has the potential to be a valuable source of food, chemicals and energy if cost-efficient fractionation methods can be developed. A 2-fold improvement in carbohydrate solubilisation could be achieved through the introduction of a milling step prior to enzymatic hydrolysis. Course and fine milled fractions were characterized by particle size distribution and light microscopy. Fine milling decreased particle size down to the micron level and this in turn improved the carbohydrate solubility yield by a multi-enzyme mixture from 23% up to 45%. Carbohydrate solubilisation could be further increased through the supplementation of this enzyme preparation with additional cellulases. The physical degradation caused by the milling also liberated soluble carbohydrates without the requirement of any enzymatic treatment.
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Affiliation(s)
- Piritta Niemi
- VTT Technical Research Centre of Finland, Espoo FI-02044 VTT, Finland.
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Thermodynamically based solvent design for enzymatic saccharide acylation with hydroxycinnamic acids in non-conventional media. N Biotechnol 2012; 29:255-70. [DOI: 10.1016/j.nbt.2011.11.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Revised: 11/07/2011] [Accepted: 11/22/2011] [Indexed: 01/31/2023]
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Clouthier CM, Pelletier JN. Expanding the organic toolbox: a guide to integrating biocatalysis in synthesis. Chem Soc Rev 2012; 41:1585-605. [DOI: 10.1039/c2cs15286j] [Citation(s) in RCA: 251] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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