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Wang ZM, Wang S, Bai H, Zhu LL, Yan HB, Peng L, Wang YB, Li H, Song YD, Liu JZ. Characterization and application of Bacillus velezensis D6 co-producing α-amylase and protease. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024. [PMID: 39087633 DOI: 10.1002/jsfa.13786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 06/28/2024] [Accepted: 07/21/2024] [Indexed: 08/02/2024]
Abstract
BACKGROUND Research on the co-production of multiple enzymes by Bacillus velezensis as a novel species is still a topic that needs to be studied. This study aimed to investigate the fermentation characteristics of B. velezensis D6 co-producing α-amylase and protease and to explore their enzymatic properties and applications in fermentation. RESULTS The maximum co-production of α-amylase and protease reached 13.13 ± 0.72 and 2106.63 ± 64.42 U mL-1, respectively, under the optimal fermented conditions (nutrients: 20.0 g L-1 urea, 20.0 g L-1 glucose, 0.7 g L-1 MnCl2; incubation conditions: initial pH 7.0, temperature 41 °C, 8% inoculation size and 30% working volume). Moreover, the genetic co-expression of α-amylase and protease increased from 0 to 24 h and then decreased after 36 h at the transcriptional level, which coincided with the growth trend of B. velezensis D6. The optimal reaction temperature of α-amylase was 55-60 °C, while that of protease was 35-40 °C. The activities of α-amylase and protease were retained by over 80% after thermal treatment (90 °C, 1 h), which indicated that two enzymes co-produced by B. velezensis D6 demonstrated excellent thermal stability. Moreover, the two enzymes were stable over a wide pH range (pH 4.0-8.0 for α-amylase; pH 4.0-9.0 for protease). Finally, the degrees of hydrolysis of corn, rice, sorghum and soybeans by α-amylase from B. velezensis D6 reached 44.95 ± 2.95%, 57.16 ± 2.75%, 52.53 ± 4.01% and 20.53 ± 2.42%, respectively, suggesting an excellent hydrolysis effect on starchy raw materials. The hydrolysis degrees of mackerel heads and soybeans by protease were 43.93 ± 2.19% and 26.38 ± 1.72%, respectively, which suggested that the protease from B. velezensis D6 preferentially hydrolyzed animal-based protein. CONCLUSION This is a systematic study on the co-production of α-amylase and protease by B. velezensis D6, which is crucial in widening the understanding of this species co-producing multi-enzymes and in exploring its potential application. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Zong-Min Wang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
| | - Shuang Wang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
| | - Hua Bai
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
| | - Lan-Lan Zhu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
| | - Hong-Bo Yan
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
| | - Lin Peng
- School of Life Science, Taizhou University, Taizhou, China
| | - Yan-Bo Wang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
| | - He Li
- School of Chemistry and Chemical Engineering, Qilu University of Technology, Heze, China
| | - Yue-Dong Song
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
| | - Ji-Zhou Liu
- Shandong Xinfurui Agricultural Science and Technology Co., Ltd, Liaocheng, China
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Tacias-Pascacio VG, Castañeda-Valbuena D, Tavano O, Abellanas-Perez P, de Andrades D, Santiz-Gómez JA, Berenguer-Murcia Á, Fernandez-Lafuente R. A review on the immobilization of bromelain. Int J Biol Macromol 2024; 273:133089. [PMID: 38878936 DOI: 10.1016/j.ijbiomac.2024.133089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/21/2024] [Accepted: 06/09/2024] [Indexed: 06/24/2024]
Abstract
This review shows the endeavors performed to prepare immobilized formulations of bromelain extract, usually from pineapple, and their use in diverse applications. This extract has a potent proteolytic component that is based on thiol proteases, which differ depending on the location on the fruit. Stem and fruit are the areas where higher activity is found. The edible origin of this enzyme is one of the features that determines the applications of the immobilized bromelain to a more significant degree. The enzyme has been immobilized on a wide diversity of supports via different strategies (covalent bonds, ion exchange), and also forming ex novo solids (nanoflowers, CLEAs, trapping in alginate beads, etc.). The use of preexisting nanoparticles as immobilization supports is relevant, as this facilitates one of the main applications of the immobilized enzyme, in therapeutic applications (as wound dressing and healing components, antibacterial or anticancer, mucus mobility control, etc.). A curiosity is the immobilization of this enzyme on spores of probiotic microorganisms via adsorption, in order to have a perfect in vivo compatibility. Other outstanding applications of the immobilized enzyme are in the stabilization of wine versus haze during storage, mainly when immobilized on chitosan. Curiously, the immobilized bromelain has been scarcely applied in the production of bioactive peptides.
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Affiliation(s)
- Veymar G Tacias-Pascacio
- Facultad de Ciencias de la Nutrición y Alimentos, Universidad de Ciencias y Artes de Chiapas, Lib. Norte Pte. 1150, 29039 Tuxtla Gutiérrez, Chiapas, Mexico.
| | - Daniel Castañeda-Valbuena
- Facultad de Ciencias de la Nutrición y Alimentos, Universidad de Ciencias y Artes de Chiapas, Lib. Norte Pte. 1150, 29039 Tuxtla Gutiérrez, Chiapas, Mexico
| | - Olga Tavano
- Faculty of Nutrition, Alfenas Federal Univ., 700 Gabriel Monteiro da Silva St, Alfenas, MG 37130-000, Brazil
| | | | - Diandra de Andrades
- Departamento de Biocatálisis, ICP-CSIC, Campus UAM-CSIC, Madrid, Spain; Department of Biology, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-901, SP, Brazil
| | - José Alfredo Santiz-Gómez
- Tecnológico Nacional de México/Instituto Tecnológico de Tuxtla Gutiérrez, Carretera Panamericana Km. 1080, 29050 Tuxtla Gutiérrez, Chiapas, Mexico
| | - Ángel Berenguer-Murcia
- Departamento de Química Inorgánica e Instituto Universitario de Materiales, Universidad de Alicante, Alicante, Spain
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Elaine Mankge M, Penistacia Maela M, Mark Abrahams A, Hope Serepa-Dlamini M. Screening of Bacillus spp. bacterial endophytes for protease production, and application in feather degradation and bio-detergent additive. Heliyon 2024; 10:e30736. [PMID: 38765083 PMCID: PMC11098850 DOI: 10.1016/j.heliyon.2024.e30736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 04/30/2024] [Accepted: 05/03/2024] [Indexed: 05/21/2024] Open
Abstract
Research on proteases and secondary metabolites from endophytes is an area that requires attention from researchers. In this study, proteases from Bacillus sp. strain MHSD16 and Bacillus sp. strain MHSD17 endophytes were characterised, and their potential biotechnological applications were investigated. Optimum protease production was achieved when isolates were grown in media containing (g/L): glucose 10g, casein 5g, yeast extract 5g, KH2PO4 2g, Na2CO3 10g at pH 9. The crude protease extracts were active in alkaline environments, thus referred to as alkaline proteases with optimal pH of 10. Additionally, Bacillus sp. strain MHSD 16 and Bacillus sp. strain MHSD17 proteases were active at high temperatures, with optimum enzyme activity at 50 °C. Thermostability profiles of these proteases showed that the enzymes were highly stable between (40-60 °C), maintaining over 85 % stability after 120 min incubation at 60 °C. Furthermore, the enzymes were stable and compatible with various household and laundry detergents. In the presence of commercial laundry detergent, OMO® 68 % and 72 % activity was retained for Bacillus sp. strain MHSD16 and Bacillus sp. strain MHSD17, respectively, while 67 % and 68 % activity were retained in the presence of Sunlight®. The potential application for use in detergents was investigated through the removal of blood stains with the crude alkaline extracts displaying efficient stain removal abilities. Feather degradation was also investigated and Bacillus sp. MHSD17 exhibited feather keratin degrading properties more effectively than Bacillus sp. MHSD16.
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Affiliation(s)
- Malese Elaine Mankge
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Doornfontein Campus, PO Box 17011, Doornfontein, Johannesburg, 2028, South Africa
| | - Mehabo Penistacia Maela
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Doornfontein Campus, PO Box 17011, Doornfontein, Johannesburg, 2028, South Africa
| | - Adrian Mark Abrahams
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Doornfontein Campus, PO Box 17011, Doornfontein, Johannesburg, 2028, South Africa
| | - Mahloro Hope Serepa-Dlamini
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Doornfontein Campus, PO Box 17011, Doornfontein, Johannesburg, 2028, South Africa
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Kokwe L, Nnolim NE, Ezeogu LI, Sithole B, Nwodo UU. Thermoactive metallo-keratinase from Bacillus sp. NFH5: Characterization, structural elucidation, and potential application as detergent additive. Heliyon 2023; 9:e13635. [PMID: 36852054 PMCID: PMC9957710 DOI: 10.1016/j.heliyon.2023.e13635] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 02/01/2023] [Accepted: 02/06/2023] [Indexed: 02/15/2023] Open
Abstract
In recent times, robust green technological developments have advanced the goal of a circular economy by minimizing waste generation. The study was undertaken to explore the keratinolytic activity of chicken feather-degrading bacteria from South African soil. Isolates coded as SSN-01 and HSN-01 were identified as Bacillus sp. NFH5 and Bacillus sp. FHNM and their sequences were deposited in GenBank, with accession numbers MW165830.1 and MW165831.1, respectively. Extracellular enzyme production and thiol group generation by Bacillus sp. NFH5 peaked at 120 h with 1879.09 ± 88.70 U/mL and 9.49 ± 0.78 mM, respectively. Glutamic acid (4.44%), aspartic acid (3.50%), arginine (3.23%), glycine (2.61%), serine (2.08%), and proline (2.08%) were relatively higher in concentration. Keratinase (KerBAN) activity was highest at pH 8.0 and 90 °C but was inhibited by both EDTA and 1,10-phenanthroline. In addition, the keratinase-encoding gene (kerBAN) accessioned OK033360 had 362 amino acid residues, with molecular weight and theoretical isoelectric point of 39 kDa and 8.81, respectively. Findings from this study highlight the significance of Bacillus sp. NFH5 in the bio-recycling of recalcitrant keratinous wastes to protein hydrolysates - potential dietary supplements for livestock feeds. The properties of KerBAN underscore its application potential in green biotechnological processes.
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Affiliation(s)
- Lupho Kokwe
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, Private Bag X1314, 5700, South Africa.,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, 5700, South Africa
| | - Nonso E Nnolim
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, Private Bag X1314, 5700, South Africa.,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, 5700, South Africa
| | - Lewis I Ezeogu
- Department of Microbiology, Faculty of Biological Sciences, University of Nigeria, Nsukka, Nigeria
| | - Bruce Sithole
- The Biorefinery Industry Development Facility, Chemicals Cluster, Council for Scientific and Industrial Research, 359 Mazisi Kunene Road, 4001, Glenwood, Durban, South Africa
| | - Uchechukwu U Nwodo
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, Private Bag X1314, 5700, South Africa.,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, 5700, South Africa
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Vicaria JM, Herrera-Márquez O, Serrano-Haro M, Vidal A, Jurado E, Jiménez-Pérez JL. Optimization of surfactants formulations to stabilise proteases and amylases. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Purushothaman K, Bhat SK, Siddappa S, Singh SA, Subbaiah R, Marathe GK, Rao G Appu Rao A. Aspartic protease-pepstatin A interactions: Structural insights on the thermal inactivation mechanism. Biochimie 2021; 189:26-39. [PMID: 34116131 DOI: 10.1016/j.biochi.2021.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 05/31/2021] [Accepted: 06/04/2021] [Indexed: 11/19/2022]
Abstract
Aspartic proteases are the targets for structure-based drug design for their role in physiological processes and pharmaceutical applications. Structural insights into the thermal inactivation mechanism of an aspartic protease in presence and absence of bound pepstatin A have been obtained by kinetics of thermal inactivation, CD, fluorescence spectroscopy and molecular dynamic simulations. The irreversible thermal inactivation of the aspartic protease comprised of loss of tertiary and secondary structures succeeded by the loss of activity, autolysis and aggregation The enthalpy and entropy of thermal inactivation of the enzyme in presence of pepstatin A increased from 81.2 to 148.5 kcal mol-1, and from 179 to 359 kcal mol-1 K-1 respectively. Pepstatin A shifted the mid-point of thermal inactivation of the protease from 58 °C to 77 °C. The association constant (K) for pepstatin A with aspartic protease was 2.5 ± 0.3 × 10 5 M-1 and ΔGo value was -8.3 kcal mol-1. Molecular dynamic simulation studies were able to delineate the role of pepstatin A in stabilizing backbone conformation and side chain interactions. In the Cα-backbone, the short helical segments and the conserved glycines were part of the most unstable segments of the protein. Understanding the mechanism of thermal inactivation has the potential to develop re-engineered thermostable proteases.
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Affiliation(s)
- Kavya Purushothaman
- Kaypeeyes Biotech Private Limited, R&D Center, Hebbal Industrial Area, Mysuru, 570016, Karnataka, India; Department of Studies in Biochemistry, University of Mysore, Manasagangothri, Mysuru, 570006, Karnataka, India
| | - Sagar Krishna Bhat
- Kaypeeyes Biotech Private Limited, R&D Center, Hebbal Industrial Area, Mysuru, 570016, Karnataka, India
| | - Shiva Siddappa
- Department of Studies in Biochemistry, University of Mysore, Manasagangothri, Mysuru, 570006, Karnataka, India
| | - Sridevi Annapurna Singh
- Department of Protein Chemistry and Technology, CSIR-CFTRI, Mysuru, 570020, Karnataka, India
| | - Roopashree Subbaiah
- Department of Biochemistry, Yuvaraja College, University of Mysore, 570020, India
| | - Gopal Kedihithlu Marathe
- Department of Studies in Biochemistry, University of Mysore, Manasagangothri, Mysuru, 570006, Karnataka, India; Department of Studies in Molecular Biology, University of Mysore, Manasagangothri, Mysuru, 570006, Karnataka, India
| | - Appu Rao G Appu Rao
- Kaypeeyes Biotech Private Limited, R&D Center, Hebbal Industrial Area, Mysuru, 570016, Karnataka, India.
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Smolin D, Tötsch N, Grad JN, Linders J, Kaschani F, Kaiser M, Kirsch M, Hoffmann D, Schrader T. Accelerated trypsin autolysis by affinity polymer templates. RSC Adv 2020; 10:28711-28719. [PMID: 35520047 PMCID: PMC9055874 DOI: 10.1039/d0ra05827k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 07/20/2020] [Indexed: 11/21/2022] Open
Abstract
Self-cleavage of proteins is an important natural process that is difficult to control externally. Recently a new mechanism for the accelerated autolysis of trypsin was discovered involving polyanionic template polymers; however it relies on unspecific interactions and is inactive at elevated salt loads. We have now developed affinity copolymers that bind to the surface of proteases by specific recognition of selected amino acid residues. These are highly efficient trypsin inhibitors with low nanomolar IC50 levels and operate at physiological conditions. In this manuscript we show how these affinity copolymers employ the new mechanism of polymer-assisted self-digest (PAS) and act as a template for multiple protease molecules. Their elevated local concentration leads to accelerated autolysis on the accessible surface area and shields complexed areas. The resulting extremely efficient trypsin inhibition was studied by SDS-PAGE, gel filtration, CD, CZE and ESI-MS. We also present a simple theoretical model that simulates most experimental findings and confirms them as a result of multivalency and efficient reversible templating. For the first time, mass spectrometric kinetic analysis of the released peptide fragments gives deeper insight into the underlying mechanism and reveals that polymer-bound trypsin cleaves much more rapidly with low specificity at predominantly uncomplexed surface areas.
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Affiliation(s)
- Daniel Smolin
- Faculty of Chemistry, University of Duisburg-Essen 45117 Essen Germany
| | - Niklas Tötsch
- Faculty of Biology, University of Duisburg-Essen 45117 Essen Germany
| | - Jean-Noël Grad
- Faculty of Biology, University of Duisburg-Essen 45117 Essen Germany
| | - Jürgen Linders
- Faculty of Chemistry, University of Duisburg-Essen 45117 Essen Germany
| | - Farnusch Kaschani
- Faculty of Biology, University of Duisburg-Essen 45117 Essen Germany
| | - Markus Kaiser
- Faculty of Biology, University of Duisburg-Essen 45117 Essen Germany
| | | | - Daniel Hoffmann
- Faculty of Biology, University of Duisburg-Essen 45117 Essen Germany
| | - Thomas Schrader
- Faculty of Chemistry, University of Duisburg-Essen 45117 Essen Germany
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Cucho H, López Y, Caldeira C, Valverde A, Ordóñez C, Soler C. Comparison of three different staining methods for the morphometric characterization of Alpaca (Vicugna pacos) sperm, using ISAS® CASA-Morph system. NOVA BIOLOGICA REPERTA 2019. [DOI: 10.29252/nbr.6.3.284] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Herrera-Márquez O, Fernández-Serrano M, Pilamala M, Jácome M, Luzón G. Stability studies of an amylase and a protease for cleaning processes in the food industry. FOOD AND BIOPRODUCTS PROCESSING 2019. [DOI: 10.1016/j.fbp.2019.06.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Fuciños C, Estévez N, Míguez M, Fajardo P, Chapela MJ, Gondar D, Rúa ML. Effectiveness of proteolytic enzymes to remove gluten residues and feasibility of incorporating them into cleaning products for industrial purposes. Food Res Int 2019; 120:167-177. [PMID: 31000227 DOI: 10.1016/j.foodres.2019.02.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 02/17/2019] [Accepted: 02/19/2019] [Indexed: 10/27/2022]
Abstract
The development of protocols for efficient gluten elimination is one of the most critical aspects of any allergen management strategy in the industry. The suitability of different proteolytic enzymes to be included in a cleaning formulation that allows the effective elimination of gluten residues was studied. Alcalase (ALC), neutrase (NEUT) and flavourzyme (FLAV) were selected from in silico analysis. The presence of 1% (v/v) of linear alkylbenzene sulphonate (LAS), a common anionic detergent, improved the gluten solubility, which may favour its elimination. Chromatographic analysis showed that the three enzymes studied were able to hydrolyse gluten in the presence of LAS. The highest percentage of short peptides (< 5 kDa) was achieved with ALC, what increases the probability of reducing the gluten antigenicity. Besides, in the presence of ALC and detergent LAS have detected the lowest levels of gluten with ELISA kits. So, effective amounts of ALC and LAS were added to a cleaning formulation, where its proteolytic activity was maintained above 90% after 37 days at 4 °C and 25 °C (under dark). Preliminary validation of the effectiveness enzymatic cleaning formulation to hydrolyse gluten was performed in a ready-to-eat/frozen food company, in which previous episodes of cross-contamination with gluten have been detected. The gluten content decreased to values below 0.125 μg/100 cm2 when the cleaning formulation was tested on different surfaces with different cleaning protocols, demonstrating the high suitability of the enzymatic cleaning formulation developed.
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Affiliation(s)
- Clara Fuciños
- Analytical and Food Chemistry Department, Faculty of Sciences, University of Vigo, As Lagoas, 32004 Ourense, Spain.
| | - Natalia Estévez
- Analytical and Food Chemistry Department, Faculty of Sciences, University of Vigo, As Lagoas, 32004 Ourense, Spain
| | - Martín Míguez
- Analytical and Food Chemistry Department, Faculty of Sciences, University of Vigo, As Lagoas, 32004 Ourense, Spain
| | - Paula Fajardo
- Health, Nutrition and Pharma Unit, R&D Area, ANFACO-CECOPESCA, Colegio Universitario 16, Vigo, 36310 Pontevedra, Spain
| | - María José Chapela
- Health, Nutrition and Pharma Unit, R&D Area, ANFACO-CECOPESCA, Colegio Universitario 16, Vigo, 36310 Pontevedra, Spain
| | - Dora Gondar
- KEMEGAL, Pol. Ind. Pousadoiro, Parcela 11, Vilagarcía de Arousa 36600, Spain
| | - M Luisa Rúa
- Analytical and Food Chemistry Department, Faculty of Sciences, University of Vigo, As Lagoas, 32004 Ourense, Spain
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Mokashe N, Chaudhari B, Patil U. Operative utility of salt-stable proteases of halophilic and halotolerant bacteria in the biotechnology sector. Int J Biol Macromol 2018; 117:493-522. [DOI: 10.1016/j.ijbiomac.2018.05.217] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 05/27/2018] [Accepted: 05/28/2018] [Indexed: 09/30/2022]
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Enzymatic removal of protein fouling from self-assembled cellulosic nanofilms: experimental and modeling studies. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2018; 47:951-960. [DOI: 10.1007/s00249-018-1320-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 06/09/2018] [Accepted: 07/04/2018] [Indexed: 10/28/2022]
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Kübelbeck S, Mikhael J, Keller H, Konradi R, Andrieu-Brunsen A, Baier G. Enzyme-Polymer Conjugates to Enhance Enzyme Shelf Life in a Liquid Detergent Formulation. Macromol Biosci 2018; 18:e1800095. [DOI: 10.1002/mabi.201800095] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 05/07/2018] [Indexed: 01/18/2023]
Affiliation(s)
| | - Jules Mikhael
- BASF SE; Carl-Bosch-Straße 38 67056 Ludwigshafen Germany
| | - Harald Keller
- BASF SE; Carl-Bosch-Straße 38 67056 Ludwigshafen Germany
| | - Rupert Konradi
- BASF SE; Carl-Bosch-Straße 38 67056 Ludwigshafen Germany
| | - Annette Andrieu-Brunsen
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie; Technische Universität Darmstadt; Alarich-Weiss-Straße 64287 Darmstadt Germany
| | - Grit Baier
- BASF SE; Carl-Bosch-Straße 38 67056 Ludwigshafen Germany
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Rübsam K, Stomps B, Böker A, Jakob F, Schwaneberg U. Anchor peptides: A green and versatile method for polypropylene functionalization. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.03.070] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hellmuth H, Dreja M. Understanding Interactions of Surfactants and Enzymes: Impact of Individual Surfactants on Stability and Wash Performance of Protease Enzyme in Detergents. TENSIDE SURFACT DET 2016. [DOI: 10.3139/113.110447] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Enzymes and surfactants are both essential ingredients that determine the performance of modern laundry detergents. We have conducted an investigation of the interaction of surfactants and enzymes under laundry detergent application conditions in order to understand the influence of individual ingredients and to optimize detergent performance. We can show that for a given protease enzyme, individual surfactants in a constant detergent matrix have a significant impact on relevant stability and performance parameter. While certain anionic surfactants like e.g. linear alkylbenzene sulfonate show strong protease inactivation, nonionic surfactants did only show slight inactivation over time. On the other hand, proteolytic performance of protease on test stains was most driven by fatty alcohol ether sulfate. Knowledge about the impact of individual surfactants on proteases will enable the best choice of ingredients for mixed surfactant systems with optimized enzyme performance and stability.
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Purification and characterization of a novel extracellular alkaline protease from Cellulomonas bogoriensis. Protein Expr Purif 2016; 121:125-32. [DOI: 10.1016/j.pep.2016.01.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Revised: 12/14/2015] [Accepted: 01/29/2016] [Indexed: 11/16/2022]
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Heterologous production of the stain solving peptidase PPP1 from Pleurotus pulmonarius. Bioprocess Biosyst Eng 2016; 39:845-53. [DOI: 10.1007/s00449-016-1564-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 02/03/2016] [Indexed: 12/27/2022]
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Yadav SK, Bisht D, Tiwari S, Darmwal N. Purification, biochemical characterization and performance evaluation of an alkaline serine protease from Aspergillus flavus MTCC 9952 mutant. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2015. [DOI: 10.1016/j.bcab.2015.08.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lv Y, Zhang J, Wu H, Zhao S, Song Y, Wang S, Wang B, Lv G, Ma X. A protease inhibition strategy based on acceleration of autolysis. Chem Commun (Camb) 2015; 51:5959-62. [DOI: 10.1039/c5cc01448d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An iconoclastic protease inhibition strategy based on autolysis acceleration: proteases are concentrated and induced to self-digest by a polymer via electrostatic interaction. Such a catalytic cycle results in high inhibition efficiency.
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Affiliation(s)
- Yan Lv
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Jianbin Zhang
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Hao Wu
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Shan Zhao
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Yizhe Song
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Shujun Wang
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Bing Wang
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Guojun Lv
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Xiaojun Ma
- Laboratory of Biomedical Materials Engineering
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
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22
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Noppen B, Fonteyn L, Aerts F, De Vriese A, De Maeyer M, Le Floch F, Barbeaux P, Zwaal R, Vanhove M. Autolytic degradation of ocriplasmin: a complex mechanism unraveled by mutational analysis. Protein Eng Des Sel 2014; 27:215-23. [PMID: 24795342 DOI: 10.1093/protein/gzu015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Ocriplasmin, a truncated form of plasmin, is commercialized in the USA and in Europe under the trade name Jetrea(®), and indicated for the treatment of symptomatic vitreomacular adhesion and vitreomacular traction including when associated with macular hole ≤400 µm, respectively. We have shown in a previous study that ocriplasmin undergoes autolytic degradation when injected in eye vitreous, which leads to its rapid inactivation. In order to investigate this process further, we have introduced in ocriplasmin a variety of amino acid substitutions within or in the immediate vicinity of the three major autolytic cleavage sites. We demonstrate here that autolytic inactivation of ocriplasmin is a sequential process where initial cleavage occurs primarily between residues 156 and 157. Reduction or even blocking of autolysis can be achieved by mutating a limited number of key residues. In this study, we also report the identification of a series of ocriplasmin variants with improved resistance to autolysis and unimpaired catalytic activity. Such variants represent useful tools for the exploration of therapeutic approaches aiming at non-surgical resolution of vitreomacular adhesion.
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Affiliation(s)
- B Noppen
- Thrombogenics N.V., Gaston Geenslaan 1, 3001 Leuven, Belgium
| | - L Fonteyn
- Thrombogenics N.V., Gaston Geenslaan 1, 3001 Leuven, Belgium
| | - F Aerts
- Thrombogenics N.V., Gaston Geenslaan 1, 3001 Leuven, Belgium
| | - A De Vriese
- Thrombogenics N.V., Gaston Geenslaan 1, 3001 Leuven, Belgium
| | - M De Maeyer
- Laboratory for Biomolecular Modeling, Katholieke Universiteit Leuven, Celestijnenlaan 200G, B-3001 Leuven, Belgium
| | - F Le Floch
- Thrombogenics N.V., Gaston Geenslaan 1, 3001 Leuven, Belgium
| | - P Barbeaux
- Thrombogenics N.V., Gaston Geenslaan 1, 3001 Leuven, Belgium
| | - R Zwaal
- Thrombogenics N.V., Gaston Geenslaan 1, 3001 Leuven, Belgium
| | - M Vanhove
- Thrombogenics N.V., Gaston Geenslaan 1, 3001 Leuven, Belgium
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23
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Ji X, Zheng Y, Wang W, Sheng J, Hao J, Sun M. Virtual screening of novel reversible inhibitors for marine alkaline protease MP. J Mol Graph Model 2013; 46:125-31. [PMID: 24200527 DOI: 10.1016/j.jmgm.2013.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Revised: 09/12/2013] [Accepted: 10/09/2013] [Indexed: 01/27/2023]
Abstract
Marine alkaline protease (MP,(2) accession no. ACY25898) is produced by a marine bacterium strain isolated from Yellow Sea sediment in China. Previous research has shown that this protease is a cold-adapted enzyme with antioxidant activity that could be used as a detergent additive. Owing to its instability in the liquid state, MP's application in liquid detergents was limited. Therefore, the discovery of reversible MP inhibitors to stabilize the protease was imperative. Here, we used the X-ray structure of MP and recompiled AutoDock 4.2 with refined Zn(2+) characters to screen the free chemical database ZINC. After completing the docking procedure, we applied strategies including the "initial filter", consensus scoring and pharmocophore model to accelerate the process and improve the virtual screening success rate. The "initial filter" was built based on the docking results of boronic acid derivatives validated as reversible inhibitors of MP by our previous studies. Finally, ten compounds were purchased or synthetized to test their binding affinity for MP. Three of the compounds could reversibly inhibit MP with apparent Ki values of 0.8-1.2 mmol. These active compounds and their binding modes provide useful information for understanding the molecular mechanism of reversible MP inhibition. The results may also serve as the foundation for further screening and design of reversible MP inhibitors.
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Affiliation(s)
- Xiaofeng Ji
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Qingdao Key Laboratory of Marine Enzyme Engineering, Qingdao 266071, China
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24
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Soleimani M, Khani A, Dalali N, Behbehani GR. Improvement in the Cleaning Performance Towards Protein Soils in Laundry Detergents by Protease Immobilization on the Silica Nanoparticles. J SURFACTANTS DETERG 2012. [DOI: 10.1007/s11743-012-1397-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Daugherty AB, Muthu P, Lutz S. Novel Protease Inhibitors via Computational Redesign of Subtilisin BPN′ Propeptide. Biochemistry 2012; 51:8247-55. [DOI: 10.1021/bi300832v] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ashley B. Daugherty
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Pravin Muthu
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Stefan Lutz
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
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26
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Díaz Blanco C, Trifonov A, Georgiev G, Tzanov T. Hematoporphyrin-based amphiphiles boost the washing performance of protease-containing formulations in a biomimetic approach. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcatb.2012.01.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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27
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Aerts F, Noppen B, Fonteyn L, Derua R, Waelkens E, de Smet MD, Vanhove M. Mechanism of inactivation of ocriplasmin in porcine vitreous. Biophys Chem 2012; 165-166:30-8. [DOI: 10.1016/j.bpc.2012.03.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Accepted: 03/01/2012] [Indexed: 01/30/2023]
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28
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Soleimani M, Khani A, Najafzadeh K. α-Amylase immobilization on the silica nanoparticles for cleaning performance towards starch soils in laundry detergents. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcatb.2011.07.011] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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29
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Protease and Amylase Stability in the Presence of Chelators Used in Laundry Detergent Applications: Correlation Between Chelator Properties and Enzyme Stability in Liquid Detergents. J SURFACTANTS DETERG 2011. [DOI: 10.1007/s11743-011-1318-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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30
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Vossenberg P, Beeftink HH, Cohen Stuart MA, Tramper H. Immobilization to prevent enzyme incompatibility with proteases. BIOCATAL BIOTRANSFOR 2011. [DOI: 10.3109/10242422.2011.631213] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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31
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Storgaard M, Henriksen ST, Zaragoza F, Peschke B, Tanner D. Design, synthesis and biological activity of novel peptidyl benzyl ketone FVIIa inhibitors. Bioorg Med Chem Lett 2011; 21:3918-22. [DOI: 10.1016/j.bmcl.2011.05.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Revised: 05/09/2011] [Accepted: 05/09/2011] [Indexed: 11/25/2022]
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32
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Correlation Between Enzyme Activity and Stability of a Protease, an Alpha-Amylase and a Lipase in a Simplified Liquid Laundry Detergent System, Determined by Differential Scanning Calorimetry. J SURFACTANTS DETERG 2011. [DOI: 10.1007/s11743-011-1272-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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Optimization of production of an oxidant and detergent-stable alkaline β-keratinase from Brevibacillus sp. strain AS-S10-II: Application of enzyme in laundry detergent formulations and in leather industry. Biochem Eng J 2011. [DOI: 10.1016/j.bej.2011.01.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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34
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Onaizi SA, He L, Middelberg AP. The construction, fouling and enzymatic cleaning of a textile dye surface. J Colloid Interface Sci 2010; 351:203-9. [DOI: 10.1016/j.jcis.2010.07.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Revised: 07/13/2010] [Accepted: 07/13/2010] [Indexed: 11/26/2022]
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35
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Rai SK, Mukherjee AK. Statistical optimization of production, purification and industrial application of a laundry detergent and organic solvent-stable subtilisin-like serine protease (Alzwiprase) from Bacillus subtilis DM-04. Biochem Eng J 2010. [DOI: 10.1016/j.bej.2009.09.007] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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36
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Onaizi SA, He L, Middelberg AP. Proteolytic cleaning of a surface-bound rubisco protein stain. Chem Eng Sci 2009. [DOI: 10.1016/j.ces.2009.05.027] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Characterisation of a detergent-stable alkaline protease from a novel thermophilic strain Paenibacillus tezpurensis sp. nov. AS-S24-II. Appl Microbiol Biotechnol 2009; 85:1437-50. [DOI: 10.1007/s00253-009-2145-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2009] [Revised: 06/25/2009] [Accepted: 07/13/2009] [Indexed: 10/20/2022]
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38
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Site-selective chemical protein glycosylation protects from autolysis and proteolytic degradation. Carbohydr Res 2009; 344:1508-14. [DOI: 10.1016/j.carres.2009.06.033] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2009] [Revised: 06/13/2009] [Accepted: 06/17/2009] [Indexed: 11/19/2022]
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39
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The immobilization of trypsin onto polyaniline for protein digestion. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2009. [DOI: 10.1016/j.msec.2008.09.014] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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40
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Inactivation of a solid-state detergent protease by hydrogen peroxide vapor and humidity. J Biotechnol 2009; 141:73-9. [DOI: 10.1016/j.jbiotec.2009.02.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2008] [Revised: 02/22/2009] [Accepted: 02/25/2009] [Indexed: 11/21/2022]
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41
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Porcel EMR, Foose LL, Svitova TF, Blanch HW, Prausnitz JM, Radke CJ. Role of surfactant on the proteolysis of aqueous bovine serum albumin. Biotechnol Bioeng 2009; 102:1330-41. [PMID: 18988266 DOI: 10.1002/bit.22159] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- E M Rodriguez Porcel
- Chemical Engineering Department, University of California, 201 Gilman Hall, Berkeley, California 94720-1462, USA
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42
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Xue Y, Nie H, Zhu L, Li S, Zhang H. Immobilization of Modified Papain with Anhydride Groups on Activated Cotton Fabric. Appl Biochem Biotechnol 2009; 160:109-21. [DOI: 10.1007/s12010-009-8588-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2008] [Accepted: 02/19/2009] [Indexed: 11/24/2022]
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43
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Khemakhem B, Ali MB, Aghajari N, Juy M, Haser R, Bejar S. Engineering of the α-amylase fromGeobacillus stearothermophilusUS100 for detergent incorporation. Biotechnol Bioeng 2009; 102:380-9. [DOI: 10.1002/bit.22083] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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44
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Mukherjee AK, Borah M, Rai SK. To study the influence of different components of fermentable substrates on induction of extracellular α-amylase synthesis by Bacillus subtilis DM-03 in solid-state fermentation and exploration of feasibility for inclusion of α-amylase in laundry detergent formulations. Biochem Eng J 2009. [DOI: 10.1016/j.bej.2008.09.011] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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45
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López C, Cavaco‐Paulo A. In‐situ Enzymatic Generation of Hydrogen Peroxide for Bleaching Purposes. Eng Life Sci 2008. [DOI: 10.1002/elsc.200700060] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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46
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Dodia MS, Rawal CM, Bhimani HG, Joshi RH, Khare SK, Singh SP. Purification and stability characteristics of an alkaline serine protease from a newly isolated Haloalkaliphilic bacterium sp. AH-6. J Ind Microbiol Biotechnol 2007; 35:121-31. [DOI: 10.1007/s10295-007-0273-x] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2007] [Accepted: 10/20/2007] [Indexed: 10/22/2022]
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47
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Onaizi SA, Malcolm AS, He L, Middelberg APJ. Directed disassembly of an interfacial rubisco protein network. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:6336-41. [PMID: 17447802 DOI: 10.1021/la700378q] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
We present the first study of the directed disassembly of a protein network at the air-water interface by the synergistic action of a surfactant and an enzyme. We seek to understand the fundamentals of protein network disassembly by using rubisco adsorbed at the air-water interface as a model. We propose that rubisco adsorption at the air-water interface results in the formation of a fishnet-like network of interconnected protein molecules, capable of transmitting lateral force. The mechanical properties of the rubisco network during assembly and disassembly at the air-water interface were characterized by direct measurement of laterally transmitted force through the protein network using the Cambridge interfacial tensiometer. We have shown that, when used individually, either 2 ppm of the surfactant, sodium dodecyl benzyl sulfonate (SDOBS), or 2 ppm of the enzyme, subtilisin A (SA), were insufficient to completely disassemble the rubisco network within 1 h of treatment. However, a combination of 2 ppm SDOBS and 2 ppm SA led to almost complete disassembly within 1 h. Increasing the concentration of SA in the mixture from 2 to 10 ppm, while keeping the SDOBS concentration constant, significantly decreased the time required to completely disassemble the rubisco network. Furthermore, the initial rate of network disassembly using formulations containing SDOBS was surprisingly insensitive to this increase in SA concentration. This study gives insight into the role of lateral interactions between protein molecules at interfaces in stabilizing interfacial protein networks and shows that surfactant and enzyme working in combination proves more effective at disrupting and mobilizing the interfacial protein network than the action of either agent alone.
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Affiliation(s)
- Sagheer A Onaizi
- Centre for Biomolecular Engineering, The Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St. Lucia QLD 4072, Australia
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48
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Zelisko PM, Aguilar AL, Brook MA. Delivery of both active enzyme and bleach from water-in-silicone oil (D(4)) emulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:3620-5. [PMID: 17335258 DOI: 10.1021/la063340s] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Advanced cleaning formulations, such as liquid laundry packages, consist of many components that require a complex mixture of interfacial actives including silicones for foam control, bleach for brightening, and enzymes for stain removal. Many of these ingredients are mutually incompatible, particularly in liquid formulations where they can be in intimate contact over extended periods of time. Solid dispersions of a prototypical bleach, NaBO3, in silicone polyether surfactants were shown to be very stable over time, even in the presence of water-in-silicone (D(4)) emulsions containing the enzyme alpha-chymotrypsin. Normally, perborates undergo rapid decomposition on contact with water. The rate of denaturation of the enzyme in the emulsion was similarly unaffected by the presence of the bleach until the emulsion was broken, unlike the case where the polyether surfactant was not present. The polyether surfactant thus protects the perborate from hydration and the enzyme from denaturing on contact with silicone oil until excess water and high shear are applied to the emulsion; protective mechanisms are discussed.
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Affiliation(s)
- Paul M Zelisko
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario, Canada L2S 3A1.
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49
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Vasconcelos A, Silva CJSM, Schroeder M, Guebitz GM, Cavaco-Paulo A. Detergent Formulations for Wool Domestic Washings Containing Immobilized Enzymes. Biotechnol Lett 2006; 28:725-31. [PMID: 16791727 DOI: 10.1007/s10529-006-9050-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2005] [Accepted: 02/03/2006] [Indexed: 10/24/2022]
Abstract
The stability of immobilized and native Esperase, a commercial serine protease, was studied by incubating the enzymes in four formulations containing the same amount of anionic and non-ionic surfactants. The results show that the activity of the immobilized enzyme is not affected by the presence of detergents while the native enzyme lost 50% of activity after 20 min of incubation in these four formulations. The washing performance of the detergents prepared with the immobilized Esperase was studied on cotton and wool fabric samples stained with human blood and egg yolk, using as control the detergent containing native Esperase. The best stain removal for cotton samples stained with human blood was achieved using the detergent with immobilized Esperase. Several physical tests confirmed that wool keratin was not degraded by the immobilized Esperase, validating the ability to use formulated detergents containing this immobilized enzyme for safe wool domestic washing.
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Affiliation(s)
- Andreia Vasconcelos
- Department of Textile Engineering, Minho University, 4800-058 Guimarães, Portugal
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50
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Schroeder M, Lenting HBM, Kandelbauer A, Silva CJSM, Cavaco-Paulo A, Gübitz GM. Restricting detergent protease action to surface of protein fibres by chemical modification. Appl Microbiol Biotechnol 2006; 72:738-44. [PMID: 16850302 DOI: 10.1007/s00253-006-0352-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2005] [Revised: 01/23/2006] [Accepted: 01/24/2006] [Indexed: 11/25/2022]
Abstract
Due to their excellent properties, such as thermostability, activity over a broad range of pH and efficient stain removal, proteases from Bacillus sp. are commonly used in the textile industry including industrial processes and laundry and represent one of the most important groups of enzymes. However, due to the action of proteases, severe damage on natural protein fibres such as silk and wool result after washing with detergents containing proteases. To include the benefits of proteases in a wool fibre friendly detergent formulation, the soluble polymer polyethylene glycol (PEG) was covalently attached to a protease from Bacillus licheniformis. In contrast to activation of PEG with cyanuric chloride (50%) activation with 1,1'-carbonyldiimidazole (CDI) lead to activity recovery above 90%. With these modified enzymes, hydrolytic attack on wool fibres could be successfully prevented up to 95% compared to the native enzymes. Colour difference (DeltaE) measured in the three dimensional colour space showed good stain removal properties for the modified enzymes. Furthermore, half-life of the modified enzymes in buffers and commercial detergents solutions was nearly twice as high as those of the non-modified enzymes with values of up to 63 min. Out of the different modified proteases especially the B. licheniformis protease with the 2.0-kDa polymer attached both retained stain removal properties and did not hydrolyse/damage wool fibres.
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Affiliation(s)
- M Schroeder
- Department of Environmental Biotechnology, Graz University of Technology, Petersgasse 12, A-8010 Graz, Austria
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