Microbial Enzymes and Their Applications in Industries and Medicine
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Amyloid-Degrading Ability of Nattokinase from Bacillus Subtilis Natto
J. Agric. Food Chem. 2009, 57, 503–508 503 Amyloid-Degrading Ability of Nattokinase from Bacillus subtilis Natto †,‡ § § † RUEI-LIN HSU, KUNG-TA LEE, JUNG-HAO WANG, LILY Y.-L. LEE, AND ,†,‡ RITA P.-Y. CHEN* Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan, R. O. C., Institute of Biochemical Sciences, National Taiwan University, Taipei 106, Taiwan, R. O. C., and Department of Biochemical Science and Technology, National Taiwan University, Taipei 106, Taiwan, R. O. C. More than 20 unrelated proteins can form amyloid fibrils in vivo which are related to various diseases, such as Alzheimer’s disease, prion disease, and systematic amyloidosis. Amyloid fibrils are an ordered protein aggregate with a lamellar cross- structure. Enhancing amyloid clearance is one of the targets of the therapy of these amyloid-related diseases. Although there is debate on whether the toxicity is due to amyloids or their precursors, research on the degradation of amyloids may help prevent or alleviate these diseases. In this study, we explored the amyloid-degrading ability of nattokinase, a fibrinolytic subtilisin-like serine protease, and determined the optimal conditions for amyloid hydrolysis. This ability is shared by proteinase K and subtilisin Carlsberg, but not by trypsin or plasmin. KEYWORDS: Nattokinase; amyloid; natto; subtilisin NAT; amyloid degradation; fibril; amyloidosis INTRODUCTION of cardiovascular disease. Dietary supplementation with natto Natto, a fermented food made from boiled soybeans, has suppresses the intimal thickening of arteries and leads to the been eaten for more than 1000 years in Asia. The fermenta- lysis of mural thrombi seen after endothelial injury (12). tion microbe isolated from natto is the Gram-positive Other clinically thrombolytic agents, such as urokinase and endospore-forming bacterium Bacillus subtilis natto (formerly streptokinase, are costly and unstable in the intestinal tract designated Bacillus natto)(1). -
Identification and Phylogenetic Analysis of Keratinase Producing Bacteria SNP1 from Poultry Field
International Journal of Biotechnology and Biochemistry ISSN 0973-2691 Volume 15, Number 1 (2019) pp. 39-51 © Research India Publications http://www.ripublication.com Identification and Phylogenetic Analysis of Keratinase Producing Bacteria SNP1 from Poultry Field Divya Balakrishnan and Nithadas Sathyadas Padmanabhan Department of Biotechnology, Sree Narayana College, Kollam-691001, Kerala, India. (*Corresponding author) Abstract The study was conduct to select the best promising keratinolytic bacterial strain. A keratinase positive bacterial strain was isolated from the soil samples of poultry field, Attingal, Thiruvananthapuram. Each sample was plated on skim milk agar and feather meal agar plates containing 5 g feather. The well grown isolates which produced the largest clear zone on skimmed milk plate were selected for keratinase assays. Out of 26 bacterial isolates, 7 isolates were selected. Among the selected strain, the best keratinase producing bacterium SNP1was selected for further analysis. The SNP1 potential strain was later confirmed as Bacillus haynessi based on molecular and phylogenetic analysis. The medium components and culture conditions were optimized to enhance keratinase production through optimization. Keratin and feather powder (10g/l) were identified as good substrates for the highest keratinase production. The strain SNP1 resulted maximum enzyme production at 96h of incubation at 37°C and pH 8 under 120 rpm. Therefore, Bacillus hayneisi might be used for large scale production of keratinase for industrial purposes. Keywords: Keratinase, Bacillus sp., Optimization, Enzyme activity, 16SrRNA Keratin is a hard-degrading fibrous and recalcitrant structural protein, which forms the third most abundant polymer in nature after cellulose and chitin (Lene et al ., 2016). In the native state, the feather keratin resists the degradation by proteolytic enzymes such as trypsin and pepsin due to tightpeptide-chains held together by disulfide bridges by means of cysteine residues (Weeranut, 2017; Korniłłowicz-Kowalska and Bohacz, 2011). -
United States Patent (19) 11 Patent Number: 5,981,835 Austin-Phillips Et Al
USOO598.1835A United States Patent (19) 11 Patent Number: 5,981,835 Austin-Phillips et al. (45) Date of Patent: Nov. 9, 1999 54) TRANSGENIC PLANTS AS AN Brown and Atanassov (1985), Role of genetic background in ALTERNATIVE SOURCE OF Somatic embryogenesis in Medicago. Plant Cell Tissue LIGNOCELLULOSC-DEGRADING Organ Culture 4:107-114. ENZYMES Carrer et al. (1993), Kanamycin resistance as a Selectable marker for plastid transformation in tobacco. Mol. Gen. 75 Inventors: Sandra Austin-Phillips; Richard R. Genet. 241:49-56. Burgess, both of Madison; Thomas L. Castillo et al. (1994), Rapid production of fertile transgenic German, Hollandale; Thomas plants of Rye. Bio/Technology 12:1366–1371. Ziegelhoffer, Madison, all of Wis. Comai et al. (1990), Novel and useful properties of a chimeric plant promoter combining CaMV 35S and MAS 73 Assignee: Wisconsin Alumni Research elements. Plant Mol. Biol. 15:373-381. Foundation, Madison, Wis. Coughlan, M.P. (1988), Staining Techniques for the Detec tion of the Individual Components of Cellulolytic Enzyme 21 Appl. No.: 08/883,495 Systems. Methods in Enzymology 160:135-144. de Castro Silva Filho et al. (1996), Mitochondrial and 22 Filed: Jun. 26, 1997 chloroplast targeting Sequences in tandem modify protein import specificity in plant organelles. Plant Mol. Biol. Related U.S. Application Data 30:769-78O. 60 Provisional application No. 60/028,718, Oct. 17, 1996. Divne et al. (1994), The three-dimensional crystal structure 51 Int. Cl. ............................. C12N 15/82; C12N 5/04; of the catalytic core of cellobiohydrolase I from Tricho AO1H 5/00 derma reesei. Science 265:524-528. -
Misc Thesisdb Bythesissuperv
Honors Theses 2006 to August 2020 These records are for reference only and should not be used for an official record or count by major or thesis advisor. Contact the Honors office for official records. Honors Year of Student Student's Honors Major Thesis Title (with link to Digital Commons where available) Thesis Supervisor Thesis Supervisor's Department Graduation Accounting for Intangible Assets: Analysis of Policy Changes and Current Matthew Cesca 2010 Accounting Biggs,Stanley Accounting Reporting Breaking the Barrier- An Examination into the Current State of Professional Rebecca Curtis 2014 Accounting Biggs,Stanley Accounting Skepticism Implementation of IFRS Worldwide: Lessons Learned and Strategies for Helen Gunn 2011 Accounting Biggs,Stanley Accounting Success Jonathan Lukianuk 2012 Accounting The Impact of Disallowing the LIFO Inventory Method Biggs,Stanley Accounting Charles Price 2019 Accounting The Impact of Blockchain Technology on the Audit Process Brown,Stephen Accounting Rebecca Harms 2013 Accounting An Examination of Rollforward Differences in Tax Reserves Dunbar,Amy Accounting An Examination of Microsoft and Hewlett Packard Tax Avoidance Strategies Anne Jensen 2013 Accounting Dunbar,Amy Accounting and Related Financial Statement Disclosures Measuring Tax Aggressiveness after FIN 48: The Effect of Multinational Status, Audrey Manning 2012 Accounting Dunbar,Amy Accounting Multinational Size, and Disclosures Chelsey Nalaboff 2015 Accounting Tax Inversions: Comparing Corporate Characteristics of Inverted Firms Dunbar,Amy Accounting Jeffrey Peterson 2018 Accounting The Tax Implications of Owning a Professional Sports Franchise Dunbar,Amy Accounting Brittany Rogan 2015 Accounting A Creative Fix: The Persistent Inversion Problem Dunbar,Amy Accounting Foreign Account Tax Compliance Act: The Most Revolutionary Piece of Tax Szwakob Alexander 2015D Accounting Dunbar,Amy Accounting Legislation Since the Introduction of the Income Tax Prasant Venimadhavan 2011 Accounting A Proposal Against Book-Tax Conformity in the U.S. -
Feather Protein Lysate Optimization and Feather Meal Formation Using
www.nature.com/scientificreports OPEN Feather protein lysate optimization and feather meal formation using YNDH protease with keratinolytic activity afterward enzyme partial purifcation and characterization Doaa A. Goda1*, Ahmad R. Bassiouny2, Nihad M. Abdel Monem2, Nadia A. Soliman1 & Yasser R. Abdel‑Fattah1 Incubation parameters used for the creation of a protein lysate from enzymatically degraded waste feathers using crude keratinase produced by the Laceyella sacchari strain YNDH were optimized using the Response Surface Methodology (RSM); amino acids quantifcation was also estimated. The optimization elevated the total protein to 2089.5 µg/ml through the application of the following optimal conditions: a time of 20.2 h, a feather concentration (conc.) of 3 g%, a keratinase activity of 24.5 U/100 ml, a pH of 10, and a cultivation temperature of 50 °C. The produced Feather Protein Lysate (FPL) was found to be enriched with essential and rare amino acids. Additionally, this YNDH enzyme group was partially purifed, and some of its characteristics were studied. Crude enzymes were frst concentrated with an Amicon Ultra 10‑k centrifugal flter, and then concentrated proteins were applied to a "Q FF" strong anion column chromatography. The partially purifed enzyme has an estimated molecular masses ranging from 6 to 10 kDa. The maximum enzyme activity was observed at 70 °C and for a pH of 10.4. Most characteristics of this protease/keratinase group were found to be nearly the same when the activity was measured with both casein and keratin‑azure as substrates, suggesting that these three protein bands work together in order to degrade the keratin macromolecule. -
Crystal Structure of Exo-Inulinase from Aspergillus Awamori: the Enzyme Fold and Structural Determinants of Substrate Recognition
doi:10.1016/j.jmb.2004.09.024 J. Mol. Biol. (2004) 344, 471–480 Crystal Structure of Exo-inulinase from Aspergillus awamori: The Enzyme Fold and Structural Determinants of Substrate Recognition R. A. P. Nagem1†, A. L. Rojas1†, A. M. Golubev2, O. S. Korneeva3 E. V. Eneyskaya2, A. A. Kulminskaya2, K. N. Neustroev2 and I. Polikarpov1* 1Instituto de Fı´sica de Sa˜o Exo-inulinases hydrolyze terminal, non-reducing 2,1-linked and 2,6-linked Carlos, Universidade de Sa˜o b-D-fructofuranose residues in inulin, levan and sucrose releasing Paulo, Av. Trabalhador b-D-fructose. We present the X-ray structure at 1.55 A˚ resolution of Sa˜o-carlense 400, CEP exo-inulinase from Aspergillus awamori, a member of glycoside hydrolase 13560-970, Sa˜o Carlos, SP family 32, solved by single isomorphous replacement with the anomalous Brazil scattering method using the heavy-atom sites derived from a quick cryo- soaking technique. The tertiary structure of this enzyme folds into 2Petersburg Nuclear Physics two domains: the N-terminal catalytic domain of an unusual five-bladed Institute, Gatchina, St b-propeller fold and the C-terminal domain folded into a b-sandwich-like Petersburg, 188300, Russia structure. Its structural architecture is very similar to that of another 3Voronezh State Technological member of glycoside hydrolase family 32, invertase (b-fructosidase) from Academy, pr. Revolutsii 19 Thermotoga maritima, determined recently by X-ray crystallography The Voronezh, 394017, Russia exo-inulinase is a glycoprotein containing five N-linked oligosaccharides. Two crystal forms obtained under similar crystallization conditions differ by the degree of protein glycosylation. -
Isolation, Purification, and Optimization of Thermophilic and Alkaliphilc Protease Originating from Hot Water Spring Bacteria
Online - 2455-3891 Vol 10, Issue 9, 2017 Print - 0974-2441 Research Article ISOLATION, PURIFICATION, AND OPTIMIZATION OF THERMOPHILIC AND ALKALIPHILC PROTEASE ORIGINATING FROM HOT WATER SPRING BACTERIA ASHWINI N PUNTAMBEKAR, MANJUSHA S DAKE* Protein Biochemistry Laboratory, Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Pune - 411 033, Maharashtra, India. Email: [email protected] Received: 05 April 2017, Revised and Accepted: 31 May 2017 ABSTRACT Objective: The main objective of this study is to investigate the industrial applications of a thermophillic alkaline protease from a hot water spring bacterial isolate “A” and to study its production, optimization, and purification. Methods: The alkaline protease was produced using shake flask studies maintaining a pH of 9.0 and a temperature of 50°C. Optimization studies of the enzyme were carried out using variable pH, temperature, organic carbon, and nitrogen sources followed by purification of the enzyme using DEAE-cellulose ion exchange chromatography technique. Stability of the enzyme was analyzed in the presence of organic solvents and surfactants. The efficiency of the enzyme in the removal of proteinaceous stains in the presence of strong detergents under extreme conditions was assessed. The fibrinolytic activity of the enzyme in dissolving the blood clot was confirmed. Results: The isolated alkaline protease was purified to homogeneity with a 16-fold increase. Media optimization studies revealed that 1% glucose and 1 % casein-induced the production of alkaline protease. The purified enzyme retained stability in the presence of ethanol, methanol, and acetone and surfactants such as 0.5% (w/v) sodium dodecyl sulfate (SDS) and 0.5% (v/v) Triton-X-100. -
Raw Materials for Industrial Fermentation Bioprocesses Improvement
Research Doctorate School in BIOmolecular Sciences Ph.D. in BIOMATERIALS - (2010-2012) RAW MATERIALS FOR INDUSTRIAL FERMENTATION BIOPROCESSES IMPROVEMENT Sergio Pirato Supervisor: Prof. Emo Chiellini Tutor: Dr. Federica Chiellini Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Applications (BIOlab) - Department of Chemistry & Industrial Chemistry, University of Pisa (Italy). 2 Sergio Pirato – PhD Thesis Sergio Pirato – PhD Thesis 3 Dietro ogni problema c'è un'opportunità. G. Galilei 4 Sergio Pirato – PhD Thesis Foreword: The present doctorate thesis in Biomaterials was formally started at the Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Application (BIOlab), at the University of Pisa, from January to September 2010. After 9 months spent at the BIOlab, the opportunity to continue the PhD as an external candidate at the Novartis Vaccines and Diagnostics came, on a topic of interest for the Biomaterials Doctorate Course. Hence, it was decided also with the consensus of the Tutor & Supervisor to continue the undertaken Doctorate Course as an external candidate without the Institutional Grant originally supplied by the University of Pisa and with the Thesis work plan accepted and endorsed by the Company itself. Therefore the thesis is consisting substantially in two parts: the first minor part is a study aiming at the development of a polymeric product suitable for the formulation of nanoparticle drug delivery systems; the second part, upon the consensus of the Supervisor and Tutor, focused on studies on raw material of biologic origin for the improvement of fermentation bioprocesses. Sergio Pirato – PhD Thesis 5 Table of Content CHAPTER 1 Aim of the Work………………………………………………………………………………. 9 1. -
Improving Citric Acid Production of an Industrial Aspergillus Niger CGMCC
Xue et al. Microb Cell Fact (2021) 20:168 https://doi.org/10.1186/s12934-021-01659-3 Microbial Cell Factories RESEARCH Open Access Improving citric acid production of an industrial Aspergillus niger CGMCC 10142: identifcation and overexpression of a high-afnity glucose transporter with diferent promoters Xianli Xue1†, Futi Bi1,2†, Boya Liu1,2, Jie Li1, Lan Zhang1, Jian Zhang1, Qiang Gao1 and Depei Wang1,2,3* Abstract Background: Glucose transporters play an important role in the fermentation of citric acid. In this study, a high- afnity glucose transporter (HGT1) was identifed and overexpressed in the industrial strain A. niger CGMCC 10142. HGT1-overexpressing strains using the PglaA and Paox1 promoters were constructed to verify the glucose transporter functions. Result: As hypothesized, the HGT1-overexpressing strains showed higher citric acid production and lower residual sugar contents. The best-performing strain A. niger 20-15 exhibited a reduction of the total sugar content and residual reducing sugars by 16.5 and 44.7%, while the fnal citric acid production was signifcantly increased to 174.1 g/L, representing a 7.3% increase compared to A. niger CGMCC 10142. Measurement of the mRNA expression levels of relevant genes at diferent time-points during the fermentation indicated that in addition to HGT1, citrate synthase and glucokinase were also expressed at higher levels in the overexpression strains. Conclusion: The results indicate that HGT1 overexpression resolved the metabolic bottleneck caused by insufcient sugar transport and thereby improved the sugar utilization rate. This study demonstrates the usefulness of the high- afnity glucose transporter HGT1 for improving the citric acid fermentation process of Aspergillus niger CGMCC 10142. -
Design and Preparation of Media for Fermentation
DESIGN AND PREPARATION OF MEDIA FOR FERMENTATION Done by: Sreelakshmi S Menon Dept of Biotechnology Fermentation Fermentation is the process in which a substance breaks down into a simpler substance using organism. Its biochemical meaning relates to the generation of energy by the catabolism of organic compounds. Fermentation is a word that has many meanings for the microbiologist: 1. Any process involving the mass culture of microorganisms, either aerobic or anaerobic. 2. Any biological process that occurs in the absence of O2. TYPES OF FERMENTATION Continuous fermentation Fed-batch fermentation Batch fermentation Submerged Liquid Fermentations Submerged liquid fermentations are traditionally used for the production of microbially derived enzymes. Submerged fermentation involves submersion of the microorganism in an aqueous solution containing all the nutrients needed for growth. Fermentation takes place in large vessels (fermenter) with volumes of up to 1,000 cubic metres. The fermentation media sterilises nutrients based on renewable raw materials like maize, sugars and soya. Most industrial enzymes are secreted by microorganisms into the fermentation medium in order to break down the carbon and nitrogen sources. Batch-fed and continuous fermentation processes are common. In the batch-fed process, sterilised nutrients are added to the fermenter during the growth of the biomass. Cont.. In the continuous process, sterilised liquid nutrients are fed into the fermenter at the same flow rate as the fermentation broth leaving the system. Parameters like temperature, pH, oxygen consumption and carbon dioxide formation are measured and controlled to optimize the fermentation process. Next in harvesting enzymes from the fermentation medium one must remove insoluble products, e.g. -
Biotechnology Past, Present and Potential
4i-"l 11- HONORARY FELLOW'S ADDRESS TO IFST 20TH ANNIVERSARY SYMPOSIUM - 16 OCT. 1985 MANCHESTER, ENGLAND IDRC - 1-lb BIOTECHNOLOGY PAST, PRESENT AND POTENTIAL BY: JOSEPH H. HULSE* BIOTECHNOLOGY: ANCIENT AND MODERN Louis Pasteur wrote "There are no applied sciences; there are only applications of science...The study of the application of science is very easy to anyone who is master of the theory". A few years later Lord Kelvin instructed us that "If you can measure that of which you speak, and can express it by a number, you know something of your subject. But if you cannot measure it, your knowledge is meagre and unsatisfactory." It would indeed be interesting to know what the spirits of these distinguished scientists are thinkinq about "Biotechnology" which takes within its broad embrace remarkable new knowledge in cell and molecular biology; some very ancient technologies; together with a large swatch of enpirical observations and discoveries, many of which remain far distant from viable technological application. Fermentation technologies have a very long history: beer, wine, bread and cheese having been around as long as cereals and vine fruits have been harvested and animais have been milked. Homer described wine as a qift from the Gods and Ecclesiasticus wisely advised that "From the beginning wine was created to make men joyful, not to make them drunk." Though ethanolic fermentations have been most pervasive, lactic and other acidic fermentations have appeared in greater diversity, particularly in traditional domestic processes of preservation. The ancient Sumerians 7,000 years ago converted all their milk into cheese in the stated belief that had God intended mankind to have clean milk to drink he would have placed the udders at the front end of the cow. -
Genomic and Phylogenomic Insights Into the Family Streptomycetaceae Lead to Proposal of Charcoactinosporaceae Fam. Nov. and 8 No
bioRxiv preprint doi: https://doi.org/10.1101/2020.07.08.193797; this version posted July 8, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. 1 Genomic and phylogenomic insights into the family Streptomycetaceae 2 lead to proposal of Charcoactinosporaceae fam. nov. and 8 novel genera 3 with emended descriptions of Streptomyces calvus 4 Munusamy Madhaiyan1, †, * Venkatakrishnan Sivaraj Saravanan2, † Wah-Seng See-Too3, † 5 1Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, 6 Singapore 117604; 2Department of Microbiology, Indira Gandhi College of Arts and Science, 7 Kathirkamam 605009, Pondicherry, India; 3Division of Genetics and Molecular Biology, 8 Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, 9 Malaysia 10 *Corresponding author: Temasek Life Sciences Laboratory, 1 Research Link, National 11 University of Singapore, Singapore 117604; E-mail: [email protected] 12 †All these authors have contributed equally to this work 13 Abstract 14 Streptomycetaceae is one of the oldest families within phylum Actinobacteria and it is large and 15 diverse in terms of number of described taxa. The members of the family are known for their 16 ability to produce medically important secondary metabolites and antibiotics. In this study, 17 strains showing low 16S rRNA gene similarity (<97.3 %) with other members of 18 Streptomycetaceae were identified and subjected to phylogenomic analysis using 33 orthologous 19 gene clusters (OGC) for accurate taxonomic reassignment resulted in identification of eight 20 distinct and deeply branching clades, further average amino acid identity (AAI) analysis showed 1 bioRxiv preprint doi: https://doi.org/10.1101/2020.07.08.193797; this version posted July 8, 2020.