Beta-Mannosidase (EC 3.2.1.25)
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
An Antifungal Chitosanase from Bacillus Subtilis SH21
molecules Article An Antifungal Chitosanase from Bacillus subtilis SH21 Yuanxiang Pang 1, Jianjun Yang 1, Xinyue Chen 1, Yu Jia 1, Tong Li 1, Junhua Jin 1, Hui Liu 1, Linshu Jiang 1, Yanling Hao 2, Hongxing Zhang 1,* and Yuanhong Xie 1,* 1 Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticides, Beijing Laboratory for Food Quality and Safety, Beijing Engineering Laboratory of Probiotics Key Technology Development, Beijing Engineering Technology Research Center of Food Safety Immune Rapid Detection, Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China; [email protected] (Y.P.); [email protected] (J.Y.); [email protected] (X.C.); [email protected] (Y.J.); [email protected] (T.L.); [email protected] (J.J.); [email protected] (H.L.); [email protected] (L.J.) 2 Key Laboratory of Functional Dairy Science of Beijing and Chinese Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; [email protected] * Correspondence: [email protected] (H.Z.); [email protected] (Y.X.) Abstract: Bacillus subtilis SH21 was observed to produce an antifungal protein that inhibited the growth of F. solani. To purify this protein, ammonium sulfate precipitation, gel filtration chromatogra- phy, and ion-exchange chromatography were used. The purity of the purified product was 91.33% ac- cording to high-performance liquid chromatography results. Sodium dodecyl sulfate–polyacrylamide gel electrophoresis and liquid chromatography–tandem mass spectrometry (LC–MS/MS) analysis revealed that the molecular weight of the protein is 30.72 kDa. The results of the LC–MS/MS analy- sis and a subsequent sequence-database search indicated that this protein was a chitosanase, and thus, we named it chitosanase SH21. -
Updating the Sequence-Based Classification of Glycosyl Hydrolases
Article Updating the sequence-based classification of glycosyl hydrolases HENRISSAT, Bernard, BAIROCH, Amos Marc Reference HENRISSAT, Bernard, BAIROCH, Amos Marc. Updating the sequence-based classification of glycosyl hydrolases. Biochemical Journal, 1996, vol. 316 ( Pt 2), p. 695-6 PMID : 8687420 DOI : 10.1042/bj3160695 Available at: http://archive-ouverte.unige.ch/unige:36909 Disclaimer: layout of this document may differ from the published version. 1 / 1 Biochem. J. (1996) 316, 695–696 (Printed in Great Britain) 695 BIOCHEMICAL JOURNAL Updating the sequence-based classification of available. When the number of glycosyl hydrolase sequences reached C 480, ten additional families (designated 36–45) could glycosyl hydrolases be defined and were added to the classification [2]. There are at present over 950 sequences of glycosyl hydrolases in the data- A classification of glycosyl hydrolases based on amino-acid- banks (EMBL}GenBank and SWISS-PROT). Their analysis sequence similarities was proposed in this Journal a few years shows that the vast majority of the C 470 additional sequences ago [1]. This classification originated from the analysis of C 300 that have become available since the last update could be classified sequences and their grouping into 35 families designated 1–35. in the existing families. However, several sequences not fitting Because such a classification is necessarily sensitive to the sample, the existing families allow the definition of new families (desig- it was anticipated that it was incomplete and that new families nated 46–57) (Table 1). When the several present genome would be determined when additional sequences would become sequencing projects have reached completion, the number of Table 1 New families in the classification of glycosyl hydrolases Family Enzyme Organism SWISS-PROT EMBL/GenBank 46 Chitosanase Bacillus circulans MH-K1 P33673 D10624 46 Chitosanase Streptomyces sp. -
Supplementary Information
doi: 10.1038/nature06269 SUPPLEMENTARY INFORMATION METAGENOMIC AND FUNCTIONAL ANALYSIS OF HINDGUT MICROBIOTA OF A WOOD FEEDING HIGHER TERMITE TABLE OF CONTENTS MATERIALS AND METHODS 2 • Glycoside hydrolase catalytic domains and carbohydrate binding modules used in searches that are not represented by Pfam HMMs 5 SUPPLEMENTARY TABLES • Table S1. Non-parametric diversity estimators 8 • Table S2. Estimates of gross community structure based on sequence composition binning, and conserved single copy gene phylogenies 8 • Table S3. Summary of numbers glycosyl hydrolases (GHs) and carbon-binding modules (CBMs) discovered in the P3 luminal microbiota 9 • Table S4. Summary of glycosyl hydrolases, their binning information, and activity screening results 13 • Table S5. Comparison of abundance of glycosyl hydrolases in different single organism genomes and metagenome datasets 17 • Table S6. Comparison of abundance of glycosyl hydrolases in different single organism genomes (continued) 20 • Table S7. Phylogenetic characterization of the termite gut metagenome sequence dataset, based on compositional phylogenetic analysis 23 • Table S8. Counts of genes classified to COGs corresponding to different hydrogenase families 24 • Table S9. Fe-only hydrogenases (COG4624, large subunit, C-terminal domain) identified in the P3 luminal microbiota. 25 • Table S10. Gene clusters overrepresented in termite P3 luminal microbiota versus soil, ocean and human gut metagenome datasets. 29 • Table S11. Operational taxonomic unit (OTU) representatives of 16S rRNA sequences obtained from the P3 luminal fluid of Nasutitermes spp. 30 SUPPLEMENTARY FIGURES • Fig. S1. Phylogenetic identification of termite host species 38 • Fig. S2. Accumulation curves of 16S rRNA genes obtained from the P3 luminal microbiota 39 • Fig. S3. Phylogenetic diversity of P3 luminal microbiota within the phylum Spirocheates 40 • Fig. -
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. -
Genomic and Transcriptomic Analysis of Carbohydrate Utilization by Paenibacillus Sp
Sawhney et al. BMC Genomics (2016) 17:131 DOI 10.1186/s12864-016-2436-5 RESEARCH ARTICLE Open Access Genomic and transcriptomic analysis of carbohydrate utilization by Paenibacillus sp. JDR-2: systems for bioprocessing plant polysaccharides Neha Sawhney1†, Casey Crooks2, Virginia Chow1, James F. Preston1* and Franz J. St John2*† Abstract Background: Polysaccharides comprising plant biomass are potential resources for conversion to fuels and chemicals. These polysaccharides include xylans derived from the hemicellulose of hardwoods and grasses, soluble β-glucans from cereals and starch as the primary form of energy storage in plants. Paenibacillus sp. JDR-2 (Pjdr2) has evolved a system for bioprocessing xylans. The central component of this xylan utilization system is a multimodular glycoside hydrolase family 10 (GH10) endoxylanase with carbohydrate binding modules (CBM) for binding xylans and surface layer homology (SLH) domains for cell surface anchoring. These attributes allow efficient utilization of xylans by generating oligosaccharides proximal to the cell surface for rapid assimilation. Coordinate expression of genes in response to growth on xylans has identified regulons contributing to depolymerization, importation of oligosaccharides and intracellular processing to generate xylose as well as arabinose and methylglucuronate. The genome of Pjdr2 encodes several other putative surface anchored multimodular enzymes including those for utilization of β-1,3/1,4 mixed linkage soluble glucan and starch. Results: To further define polysaccharide utilization systems in Pjdr2, its transcriptome has been determined by RNA sequencing following growth on barley-derived soluble β-glucan, starch, cellobiose, maltose, glucose, xylose and arabinose. The putative function of genes encoding transcriptional regulators, ABC transporters, and glycoside hydrolases belonging to the corresponding substrate responsive regulon were deduced by their coordinate expression and locations in the genome. -
WO 2015/130881 Al 3 September 2015 (03.09.2015) P O P CT
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2015/130881 Al 3 September 2015 (03.09.2015) P O P CT (51) International Patent Classification: (72) Inventors: NAGY, Kevin D.; 106 Steven Lane, Wilming C12P 19/16 (2006.01) C12P 19/12 (2006.01) ton, Delaware 19808 (US). HAGO, Erwin Columbus; CUP 19/18 (2006.01) C12P 19/08 (2006.01) 2901 6th Street Sw Apt. 24, Cedar Rapids, Iowa 52404 CUP 19/04 (2006.01) (US). SHETTY, Jayarama K.; 4806 Braxton Place, Pleasonton, California 94566 (US). HENNESSEY, Susan (21) International Application Number: Marie; 32 Truman Lane, Avondale, Pennsylvania 193 11 PCT/US20 15/0 17644 (US). DICOSIMO, Robert; 1607 Masters Way, Chadds (22) International Filing Date: Ford, Pennsylvania 193 17-9720 (US). HUA, Ling; 126 26 February 2015 (26.02.2015) Hockessin Drive, Hockessin, Delaware 19707 (US). RAMIREZ, Rodrigo; Rua Alfredo Ribeiro Nogueira, 280. (25) Filing Language: English Casa08, Campinas, 13092-480 Sao Paulo (BR). TANG, Publication Language: English Zhongmei; Room 602, Building 100, Lane 1100, Gudai Road, Shanghai 201 102 (CN). YU, Zheyong; Room 501, Priority Data: Building 17, Lane 150, Guangyue Road, Hongkou District, 61/945,233 27 February 2014 (27.02.2014) US Shanghai 200000 (CN). 61/945,241 27 February 2014 (27.02.2014) US 62/004,300 29 May 2014 (29.05.2014) us (74) Agent: CHESIRE, Dennis; E. I. du Pont de Nemours and 62/004,305 29 May 2014 (29.05.2014) us Company, Legal Patent Records Center, Chestnut Run 62/004,308 29 May 2014 (29.05.2014) us Plaza 721/2640, 974 Centre Road, PO Box 291 5 Wilming 62/004,290 29 May 2014 (29.05.2014) us ton, Delaware 19805 (US). -
Depolymerization of Chitosan by Enzymes from the Digestive Tract of Sea Cucumber Stichopus Japonicus
African Journal of Biotechnology Vol. 11(2), pp. 423-428, 5 January, 2012 Available online at http://www.academicjournals.org/AJB DOI: 10.5897/AJB11.2803 ISSN 1684–5315 © 2012 Academic Journals Full Length Research Paper Depolymerization of chitosan by enzymes from the digestive tract of sea cucumber Stichopus japonicus Dong-Rui Yao, Ming-Qian Zhou, Sheng-Jun Wu and Sai-Kun Pan* School of Marine Science and Technology, Huaihai Institute of Technology, 59 Cangwu Road, Xinpu, 222005, China. Accepted 14 November, 2011 A complex of enzymes was isolated in a preparation derived from the digestive tract of sea cucumber, Stichopus japonicus . Hydrolysis of chitosan using this enzyme preparation decreased its molecular weight (Mw), increased its water solubility and produced water-soluble chitosan (WSC). The conditions for hydrolysis were optimized to pH 6.0, temperature 45°C, 16 mg enzyme preparation (22.08 U of chitosanase activity) in a reaction solution (500 ml) containing 5 g chitosan and total reaction time of 3 h. The Mw of hydrolyzed chitosan was 1260 Da, and the WSC content in the resulting product and the yield were 96.7 and 95.4% (w/w), respectively. The structure of WSC was characterized using Fourier transform infrared (FTIR) spectroscopy. Key words: Water-soluble chitosan, complex enzyme preparation, sea cucumber Stichopus japonicus , hydrolysis. INTRODUCTION Water-soluble chitosan (WSC) has many advantages 2007). when compared with ordinary chitosan; these include Furthermore, a number of enzymes, such as protease, antifungal, antibacterial and antitumor activities (Kang et lipase, esterase, glycosidase (amylase, cellulose, dis- al., 2007). WSC can be synthesized by either chemical or accharidases, invertase and chitinase) and phosphatase enzymatic hydrolysis. -
(12) United States Patent (10) Patent No.: US 6,468,955 B1 Smets Et Al
USOO6468955B1 (12) United States Patent (10) Patent No.: US 6,468,955 B1 Smets et al. (45) Date of Patent: Oct. 22, 2002 (54) LAUNDRY DETERGENT AND/OR FABRIC FOREIGN PATENT DOCUMENTS CARE COMPOSITIONS COMPRISINGA MODIFIED ENZYME WO WO 94/07998 4/1994 ............ C12N/9/42 WO WO 94/29460 12/1994 ... C12N/15/62 (75) Inventors: Johan Smets, Lubbeek (BE); Jean-Luc WO WO 97/07203 2/1997 C12N/11/12 Philippe Bettiol, Brussels (BE); WO WO 97/24421 7/1997 WO WO-97/24421 * 7/1997 ........... C11D/3/386 Stanton Lane Boyer, Fairfield, OH WO WO-97/28243 * 8/1997 ..... ... C11D/3/386 (US); Alfred Busch, Londerzeel (BE) WO WO 97/28256 8/1997 ..... ... C12N/9/00 WO WO 97/301.48 8/1997 ..... ... C12N/9/96 (73) Assignee: The Proctor & Gamble Company, WO WO 98/OO500 1/1998 ..... ... C11D/3/386 Cincinnati, OH (US) WO WO 98/16633 4/1998 ..... ... C12N/9/26 (*) Notice: Subject to any disclaimer, the term of this WO WO 98/284.11 7/1998 ............ C12N/9/42 patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days. OTHER PUBLICATIONS (21) Appl. No.: 09/674,478 Characterization of a Double Cellulose-Binding Domain No (22) PCT Filed: Apr. 30, 1999 date. (86) PCT No.: PCT/US99/09453 * cited by examiner S371 (c)(1), (2), (4) Date: Nov. 1, 2000 Primary Examiner Mark Kopec (87) PCT Pub. No.: WO99/57252 ASSistant Examiner-Eisa Elhilo (74) Attorney, Agent, or Firm-Frank Taffy; C. Brant Cook; PCT Pub. Date: Nov. 11, 1999 K. -
(12) United States Patent (10) Patent No.: US 9,689,046 B2 Mayall Et Al
USOO9689046B2 (12) United States Patent (10) Patent No.: US 9,689,046 B2 Mayall et al. (45) Date of Patent: Jun. 27, 2017 (54) SYSTEM AND METHODS FOR THE FOREIGN PATENT DOCUMENTS DETECTION OF MULTIPLE CHEMICAL WO O125472 A1 4/2001 COMPOUNDS WO O169245 A2 9, 2001 (71) Applicants: Robert Matthew Mayall, Calgary (CA); Emily Candice Hicks, Calgary OTHER PUBLICATIONS (CA); Margaret Mary-Flora Bebeselea, A. et al., “Electrochemical Degradation and Determina Renaud-Young, Calgary (CA); David tion of 4-Nitrophenol Using Multiple Pulsed Amperometry at Christopher Lloyd, Calgary (CA); Lisa Graphite Based Electrodes', Chem. Bull. “Politehnica” Univ. Kara Oberding, Calgary (CA); Iain (Timisoara), vol. 53(67), 1-2, 2008. Fraser Scotney George, Calgary (CA) Ben-Yoav. H. et al., “A whole cell electrochemical biosensor for water genotoxicity bio-detection”. Electrochimica Acta, 2009, 54(25), 6113-6118. (72) Inventors: Robert Matthew Mayall, Calgary Biran, I. et al., “On-line monitoring of gene expression'. Microbi (CA); Emily Candice Hicks, Calgary ology (Reading, England), 1999, 145 (Pt 8), 2129-2133. (CA); Margaret Mary-Flora Da Silva, P.S. et al., “Electrochemical Behavior of Hydroquinone Renaud-Young, Calgary (CA); David and Catechol at a Silsesquioxane-Modified Carbon Paste Elec trode'. J. Braz. Chem. Soc., vol. 24, No. 4, 695-699, 2013. Christopher Lloyd, Calgary (CA); Lisa Enache, T. A. & Oliveira-Brett, A. M., "Phenol and Para-Substituted Kara Oberding, Calgary (CA); Iain Phenols Electrochemical Oxidation Pathways”, Journal of Fraser Scotney George, Calgary (CA) Electroanalytical Chemistry, 2011, 1-35. Etesami, M. et al., “Electrooxidation of hydroquinone on simply prepared Au-Pt bimetallic nanoparticles'. Science China, Chem (73) Assignee: FREDSENSE TECHNOLOGIES istry, vol. -
Generate Metabolic Map Poster
Authors: Pallavi Subhraveti Ron Caspi Quang Ong Peter D Karp An online version of this diagram is available at BioCyc.org. Biosynthetic pathways are positioned in the left of the cytoplasm, degradative pathways on the right, and reactions not assigned to any pathway are in the far right of the cytoplasm. Transporters and membrane proteins are shown on the membrane. Ingrid Keseler Periplasmic (where appropriate) and extracellular reactions and proteins may also be shown. Pathways are colored according to their cellular function. Gcf_900114035Cyc: Amycolatopsis sacchari DSM 44468 Cellular Overview Connections between pathways are omitted for legibility. -
Improve Thermostability of Bacillus Sp. TS Chitosanase Through Structure‑Based Alignment Zhanping Zhou1 & Xiao Wang2*
www.nature.com/scientificreports OPEN Improve thermostability of Bacillus sp. TS chitosanase through structure‑based alignment Zhanping Zhou1 & Xiao Wang2* Chitosanases can catalyze the release of chitooligosaccharides which have a number of medical applications. Therefore, Chitosanases are good candidates for large‑scale enzymatic synthesis due to their favorable thermostability properties and high catalytic efciency. To further improve the thermostability of a chitosanase from Bacillus sp. TS, which has a half‑life of 5.32 min, we mutated specifc serine residues that we identifed as potentially relevant through structure comparison with thermophilic CelA from Clostridium thermocellum. Out of a total of 15 mutants, three, namely S265G, S276A, and S347G, show higher thermostability. Their half‑lives at 60 °C were calculated as 34.57 min, 36.79 min and 7.2 min. The Km values of S265G, S276A and S347G mutants show substrate binding ability comparable to that of the wild‑type enzyme, while the S265G mutant displays a signifcant decrease of enzymatic activities. Additionally, we studied the synergistic efects of combined mutations, observing that all double mutants and the triple mutant are more stable than the wild‑type enzyme and single mutants. Finally, we investigated the mechanisms which might give a reasonable explanation for the improved thermostability via comparative analysis of the resulting 3D structures. Chitosanase (EC 3.2.1.132) is a kind of enzyme that can degrade chitosan and produce chitooligosaccharides 1, which are mainly composed of D-glucosamine and occasionally incorporation of N-acetylglucosamine. Te chitooligosaccharides exhibit a wide range of interesting biological activities. A number of potential applications of chitooligosaccharides have been suggested in medical contexts, including their use as inhibitors of tumor growth and metastasis, anti-infammation therapeutics against asthma, facilitators of bone-tissue formation, wound healing accelerators and antibacterial, antifungal, and anti-malaria agents2–4. -
Discovery, Molecular Mechanisms, and Industrial Applications of Cold-Active Enzymes
REVIEW published: 09 September 2016 doi: 10.3389/fmicb.2016.01408 Discovery, Molecular Mechanisms, and Industrial Applications of Cold-Active Enzymes Margarita Santiago 1, César A. Ramírez-Sarmiento 2, Ricardo A. Zamora 3 and Loreto P. Parra 2, 4* 1 Department of Chemical Engineering and Biotechnology, Centre for Biochemical Engineering and Biotechnology, Universidad de Chile, Santiago, Chile, 2 Schools of Engineering, Medicine and Biological Sciences, Institute for Biological and Medical Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile, 3 Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Santiago, Chile, 4 Department of Chemical and Bioprocesses Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile Cold-active enzymes constitute an attractive resource for biotechnological applications. Their high catalytic activity at temperatures below 25◦C makes them excellent biocatalysts that eliminate the need of heating processes hampering the quality, sustainability, and cost-effectiveness of industrial production. Here we provide a review of the isolation and characterization of novel cold-active enzymes from microorganisms Edited by: inhabiting different environments, including a revision of the latest techniques that have Robert Kourist, been used for accomplishing these paramount tasks. We address the progress made Ruhr University Bochum, Germany in the overexpression and purification of cold-adapted enzymes, the evolutionary and Reviewed by: molecular basis of their high activity at low temperatures and the experimental and Kerstin Steiner, Austrian Centre of Industrial computational techniques used for their identification, along with protein engineering Biotechnology, Austria endeavors based on these observations to improve some of the properties of Sandy Schmidt, Delft University of Technology, cold-adapted enzymes to better suit specific applications.