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Dissertations / Theses on the topic 'Nostoc'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Ehling-Schulz, Monika. "Physiological and protein-biochemical analysis of UV-A and UV-B tolerance of the terrestrial cyanobacterium Nostoc commune." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=960206582.

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2

Lozada, Borjas Carlos Martin. "Estudio comparativo de la actividad antioxidante de los polisacáridos extracelulares de Nostoc sphaericum y Nostoc commune." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2018. https://hdl.handle.net/20.500.12672/7587.

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Publicación a texto completo no autorizada por el autor<br>Compara la actividad antioxidante in vitro de los polisacáridos extracelulares de las cianobacterias Nostoc sphaericum y Nostoc commune recolectados en la laguna de Patococha, región Ancash; así como, la comparación de sus actividades. El tamizaje fitoquímico se realizó mediante los reactivos de Molish, antrona, ninhidrina, tricloruro férrico, gelatina, Shinoda, Fehling, Lieberman Bouchardat, Dragendorff, Mayer, Rosenheim, hidroxilamina, vainillin sulfúrico, Bertrand, Sonenheim y Bornträger. La actividad antioxidante de los polisacárid

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3

Waters, Margaret Fiona. "Enzymes of RNA metabolism in Nostoc sp. MAC." Thesis, University of Liverpool, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329409.

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4

Jordan, Brian Robert. "Carbohydrate-Interacting Proteins from Two Nostoc (Cyanobacteria) Species." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/11177.

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Cyanobacteria of the Nostoc genus are known for the thick, mucilaginous carbohydrate coatings that they produce. In this work, two examples of cyanobacterial glycobiology are considered, each of which involves a cyanobacterium of the Nostoc genus. The first portion of this work details attempts to obtain amino acid sequence information from the enzymes (glycosyltransferases) that are responsible for producing the extracellular polysaccharide (EPS) of Nostoc commune DRH1, ultimately to allow the transfer of this capacity to another organism. Two artificial substrates were synthesized for u

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5

Lennihan, Robert. "Ecology of Nostoc in a high arctic oasis /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/5184.

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6

Špakaitė, Ina. "Morphology, ecology and phylogeny of cyanobacteria belonging to genera Nostoc and Desmonostoc in Lithuania." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140915_151715-83237.

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The aim of the study was to investigate the morphology, ecology and phylogeny of cyanobacteria belonging to genera Nostoc and Desmonostoc in Lithuania. The detailed research of freshwater and terrestrial Nostoc and Desmonostoc species provided new data on taxonomy, biology and ecology of these cyanobacteria and the overall diversity of algae in Lithuania. 20 Nostoc species and two intraspecific taxa, and 18 taxa to the Nostoc genus level were identified. Twelve Nostoc species and intraspecific taxa, Desmonostoc genus including two taxa were recorded for the first time in Lithuania. A check lis

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7

Lichtl, Rixa Regina. "The hydrogen production capability of free-living Nostoc filagelliforme." Thesis, King's College London (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362742.

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8

Ow, Saw Yen. "High throughput quantitative proteomics development : A tool to achieve system-wide understanding of N2 fixing cyanobacteria nostoc Sp.PCC 7120 and nostoc punctiforme ATCC 29133." Thesis, University of Sheffield, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.500186.

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9

Wright, Deborah J. "Molecular Biology of Desiccation Tolerance in the Cyanobacterium Nostoc commune." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/9714.

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The molecular biology of desiccation tolerance was investigated in the cyanobacteria with emphasis on Nostoc commune. Analysis of DNA from 41 samples of desiccated Nostoc spp. of varied age and global distribution led to the amplification of 43 independent tRNALEU(UAA) group 1 intron sequences. Phylogenetic analysis of the entire data set made it possible to define the form species Nostoc commune. The synthase (spsA) and phosphatase (sppA) genes required for the synthesis of sucrose were isolated from cyanobacterium Synechocystis sp. strain PCC 6803 and overexpressed in E. coli in two differen

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10

Cardona, Tanai. "The heterocysts of nostoc punctiforme from proteomics to energy transfer /." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-108413.

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11

Heekin, Jonathan. "THE EFFECT OF NACL ON AKINETE DIFFERENTIATION IN THE CYANOBACTERIUM NOSTOC PUNCTIFORME." VCU Scholars Compass, 2008. http://scholarscompass.vcu.edu/etd/1584.

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Nostoc punctiforme is a nitrogen-fixing, symbiotic/free-living cyanobacterium. There has been a great deal of research conducted on the genomic nature of N. punctiforme as it pertains to its ecologically important role in the nitrogen cycle in varied environments around the world. My study concentrated on the dormant cell type known as the akinete. Increasing concentrations of NaCl were used to follow the growth phases from germination to akinete formation (lag phase-logarithmic growth phase-stationary phase). I found that increased salt concentrations caused N. punctiforme to form akinetes fa

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12

Thorsteinsson, Marc V. "Partial structural characterization of the cytoplasmic hemoglobin of Nostoc commune UTEX 584 expressed in Escherichia coli /." This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06232009-063505/.

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13

Becker, Julia E. "Biosynthesis of Cyclic Peptides and Depsipeptides in NOSTOC SP ATCC 53789." Thesis, University of Hawaii at Manoa, 2002. http://hdl.handle.net/10125/6940.

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The cyanobacterium Nostoc sp. ATCC53789 produces two interesting families of natural products: the cryptophycins and the nostocyclopeptides. The structures of the cryptophycins, a class of tumor-selective cytotoxins, suggest the involvement of both peptide synthetases and polyketide synthases in their biosynthesis. The nostocyclopeptides are cyclic heptapeptides that feature the unnatural amino acid (2S, 4S)-4-methylproline and an unusual imine linkage between two of the amino acid residues. To identify the biosynthetic gene clusters for these peptides, a cosmid library was generated. Peptide

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14

Onek, Leonzio Angole. "Calcium mediated regulation and calmodulin in the cyanobacterium Nostoc PCC 6720." Thesis, Lancaster University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316571.

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15

Chapman, Karen Elizabeth. "Construction and characterisation of 'cyaC' mutants in the cyanobacterium 'Nostoc punctiforme'." Thesis, University of Leeds, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424019.

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16

Mehner, Christian Michael. "Bioactive peptides from the cyanobacterial strains Tychonema sp. and Nostoc insulare." München Verl. Dr. Hut, 2008. http://d-nb.info/992163552/04.

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17

Gonzalez, Alfonso Jr. "A trio of sigma factors control hormogonium development in Nostoc punctiforme." Scholarly Commons, 2019. https://scholarlycommons.pacific.edu/uop_etds/3621.

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Cyanobacteria are prokaryotes capable of oxygenic photosynthesis, and for many species, nitrogen fixation, giving cyanobacteria an important role in global carbon and nitrogen cycles. Furthermore, multicellular filamentous cyanobacteria are developmentally complex, capable of differentiation into different cell types, including cells capable of nitrogen fixation and cells for motility, making them an ideal platform for studying development, as well as for practical use in biotechnology. Understanding how developmental programmes are activated require an understanding of the role of alternative

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18

Thorsteinsson, Marc Victor. "Partial structural characterization of the cytoplasmic hemoglobin of Nostoc commune UTEX 584 expressed in Escherichia coli." Thesis, Virginia Tech, 1994. http://hdl.handle.net/10919/43454.

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19

Paulsrud, Per. "The Nostoc Symbiont of Lichens : Diversity, Specificity and Cellular Modifications." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-5136-5/.

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20

Beesley, Clare Elizabeth. "The analysis of heterocyst-specific sequences from the cyanobacterium nostoc PCC 6720." Thesis, Lancaster University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239072.

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21

Temple, Stephen James. "The isolation of heterocyst specific sequences from the cyanobacterium Nostoc PCC 6720." Thesis, Lancaster University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305698.

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22

Agervald, Åsa. "Maturation and Regulation of Cyanobacterial Hydrogenases." Doctoral thesis, Uppsala universitet, Mikrobiell Kemi, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-110871.

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Accelerated global warming plus an increasing need for energy is an equation not easily solved, thus new forms of sustainable energy production are urgently requested. In this context hydrogen production based on a cyanobacterial system offers an environmentally friendly alternative for energy capture and conversion. Cyanobacteria can produce hydrogen gas from sun light and water through the combination of photosystems and hydrogenases, and are suitable to cultivate in large scale. In the present thesis the maturation process of [NiFe]-hydrogenases is investigated with special focus on transcr

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23

Chávez, Hidalgo Lourdes Pilar. "Composición química y actividad antioxidante in vitro del extracto acuoso de Nostoc sphaericum (Cushuro), laguna Cushurococha-Junín." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2014. https://hdl.handle.net/20.500.12672/3897.

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Objetivo: Determinar la composición química y actividad antioxidante in vitro del extracto acuoso liofilizado de Nostoc sphaericum (Cushuro) de la laguna Cushurococha, Junín. Materiales y métodos: Estudio de enfoque cuantitativo; con diseño, descriptivo, observacional, transversal, la muestra biológica fue el extracto acuoso liofilizado de Nostoc sphaericum (Cushuro) que se recolectó de la laguna Cushurococha en el departamento de Junín. Se utilizaron los métodos Lowry, Antrona, Folin-Ciocalteu, el ensayo de captación de ABTS.+. Resultados: La cantidad, por muestra liofilizada, de proteínas so

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24

Hill, Donna René. "Morphological, biochemical and molecular characterization of desiccation-tolerance in cyanobacterium Nostoc commune var. Vauch." Diss., Virginia Tech, 1994. http://hdl.handle.net/10919/40154.

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Filaments of the desiccation-tolerant cyanobacterium Nostoc commune are embedded within, and distributed throughout, a dense glycan sheath. Analysis of the glycan of field materials and of pure cultures of N. commune DRH1 through light and electron microscopy, immunogold-labelling and staining with dyes, revealed changes in the pattern of differentiation in glycan micro-structure, as well as localized shifts in pH, upon rehydration of desiccated field material. A Ca/Si rich external (pellicular) layer of the glycan acts as a physical barrier on the surface of N. commune colonies. A purified fr

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25

Jaki, Birgit. "Biological screening of cyanobacteria and phytochemical investigation of Nostoc commune and Tolypothrix byssoidea /." Zürich, 2000. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13582.

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26

Soler, Campmajó David. "Estudis cinètics i estructurals de la trans inteïna Npu DnaE de "Nostoc punctiforme"." Doctoral thesis, Universitat de Girona, 2014. http://hdl.handle.net/10803/285784.

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Les inteïnes són dominis proteics que mitjançant un procés de tall i unió s’autoescindeixen de la cadena polipeptídica precursora i catalitzen la unió de les seqüències flanquejants (exteïnes) mitjançant un enllaç peptídic. Actualment, la trans inteïna Npu DnaE és una de les que més s’utilitza en diferents aplicacions biotecnològiques. En aquest treball s’ha estudiat i comparat la termoestabilitat que presenta la inteïna Npu DnaE formant una única cadena polipeptídica, quan es troba partida en dos fragments associats i del fragment IN aïllat. Per altra banda, s’ha estudiat com afecta a l’activ

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27

Zhang, Ruojing. "The Investigation of Biophysical and Biological Function of PRPS from Nostoc PCC 7120." Miami University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=miami1617630241200474.

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28

Nascimento, Antônio Galvão do. "Métodos de purificação e efeitos da qualidade espectral da luz em Nostoc spp." Universidade Federal de Viçosa, 1998. http://www.locus.ufv.br/handle/123456789/10625.

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Submitted by Nathália Faria da Silva (nathaliafsilva.ufv@gmail.com) on 2017-06-09T17:59:24Z No. of bitstreams: 1 resumo.pdf: 15291 bytes, checksum: ac7143b5fd5af7ee0507b1862b2f419a (MD5)<br>Made available in DSpace on 2017-06-09T17:59:24Z (GMT). No. of bitstreams: 1 resumo.pdf: 15291 bytes, checksum: ac7143b5fd5af7ee0507b1862b2f419a (MD5) Previous issue date: 1998-09-10<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>A partir de um conjunto de 39 cianobactérias, foram purificados 14 isolados através de quatro métodos. Organismos que apresentam motilidade foram purific

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29

Falch, Beatrix S. "Phytochemical and biological investigations of cyanobacteria, in particular of Fischerella ambigua and Nostoc sphaericum /." [S.l.] : [s.n.], 1994. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10882.

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30

Kimani, Duane. "Biodiesel and Hydrogen Production : A Study of Nostoc sp. in Pulp and Paper Wastewater." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-125085.

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The modernized world is over-consuming low-cost energy sources that strongly contributes to environmental stress. As a consequence, the interest for environmentally friendly alternatives has increased immensely. One such alternative is utilizing the diazotrophic nature of the heterocystous filamentous cyanobacteria Nostoc sp. as feedstock for biodiesel and hydrogen production using pulp and paper wastewater – a phosphorous and nitrogen deficient medium. In this work, biodiesel and hydrogen production was studied with respect to three main aspects: biodiesel quality properties, lipid content an

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31

Llavero, Pasquina Marcel. "Engineered light controlled cell development for enhanced hydrogen production in Nostoc punctiforme ATCC 29133." Thesis, Uppsala universitet, Mikrobiell kemi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-294854.

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The aim of this thesis is to enhance heterocyst-based hydrogen production inNostoc punctiforme ATCC 29133. We envision to do so by finely regulatingthe ratio of heterocyst in order to optimize the filament energy balance. Wehereby report the development of an optogenetic synthetic switch basedon the native PcpeC promoter. The optogenetic switch featured a 24-folddynamic range when measuring reporter sfGFP fluorescence. Such a geneticgate was conceived to artificially drive the expression of hetR, the masterregulator of heterocyst development. We achieved to induce enhancedheterocyst differenti

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32

Ran, Liang. "Proteomic profiles and gene expressions in the symbiotically competent cyanobacterium Nostoc sp. PCC 73102 /." Stockholm : Department of Botany, Stockholm university, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-6827.

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33

Liu, Xuejun, and 劉學軍. "An eco-physiological study of the edible terrestrial cyanobacterium Nostoc flagelliforme: towards successfulartificial cultivation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B29514836.

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34

Sines, Brian James. "Isolation and partial characterization of a water stress protein of the desiccation-tolerant cyanobacterium Nostoc commune UTEX 584 expressed in Escherichia coli." Thesis, Virginia Tech, 1996. http://hdl.handle.net/10919/46434.

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A desiccation-tolerant cyanobacterium <i>Nostoc commune</i> accumulates a novel group of water stress proteins (Wsp) in response to cycles of repeated drying and rehydration. Antibodies, specific for Wsp, were used to screen a lambdafix II library of <i>N. commune</i> UTEX 584 Bam H1 DNA fragments and an 8.5-kb fragment, containing a gene cluster that synthesized a 59-kDa cross-reactive protein. The cloned fragment comprised five ORF’s. The ORF’s 59, 24, 22, 36, and 70, each potentially encode products of molecular weights of 59, 24, 22, 36, and 70-kDa, respectively. The 59 and 24 ORF products

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35

Holmqvist, Marie. "The Cyanobacterial Uptake Hydrogenase : Regulation, Maturation and Function." Doctoral thesis, Uppsala universitet, Mikrobiell Kemi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-129223.

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With accellerating global warming and pollution problems a change of energy regime is necessary. Solar energy offers a clean and unlimited energy source of enormous potential. Due to it’s intermittenet nature solar energy must be stored - ideally in the chemical bond of a carrier molecule. Hydrogen gas, H2, an energy carrier with water as only emission when used in a fuel cell, is considered to be the choise for the future. In this context cyanobacteria show promising potential as future H2 factories since they can produce H2 from solar energy and water. The main enzymes directly involved in c

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36

Sosa, Taco Celina Olenka. "Calidad nutricional y la aceptabilidad del producto obtenido por deshidratación osmótica del nostoc sphaericum (cushuro)." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2021. https://hdl.handle.net/20.500.12672/16456.

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Determina la calidad nutricional y la aceptabilidad del producto obtenido por deshidratación osmótica del Nostoc sphaericum (cushuro). El trabajo es de tipo tecnológico por el desarrollo de un nuevo producto. La materia prima principal fue el Nostoc sphaericum (cushuro) fue sometido a la inmersión de soluciones de sacarosa de 45°Brix, 50°Brix y 55°Brix respectivamente, después de cada 24 horas se realizaron mediciones de peso y la medición de grados brix de la solución por 10 días. Las pruebas de aceptabilidad fueron realizadas por medio de un test de cinco puntos y evaluando atributos

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37

Salem, Hassan Samy. "Phylogenetic Analysis of the Symbiotic Nostoc Cyanobacteria as Assessed by the Nitrogen Fixation (Nifd) Gene." Miami University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=miami1282030524.

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38

Alvarenga, Danillo Oliveira de. "Análise genômica e funcional da cianobactéria Nostoc sp. CENA67 e caracterização da sua comunidade microbiana associada." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/64/64133/tde-02022016-150801/.

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Nostoc é um gênero cianobacteriano com distribuição ubíqua que tem importância em diversos ecossistemas. Contudo, poucos genomas estão atualmente disponíveis para esse gênero. Enquanto Nostoc spp. são as cianobactérias mais comumente relatadas em relações simbióticas com fungos, animais, plantas e outros organismos, associações com outros micro organismos não receberam atenção similar. Como consequência das fortes interações entre cianobactérias e heterótrofos, culturas não axênicas são geralmente obtidas no isolamento dessas bactérias, o que proporciona uma oportunidade interessante para o de

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39

Riley, Kelsey Wynne. "Evidence that a partner-switching regulatory system modulates hormogonium motility in the filamentous cyanobacterium Nostoc punctiforme." Scholarly Commons, 2018. https://scholarlycommons.pacific.edu/uop_etds/3135.

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Partner-switching regulatory systems (PSRSs) are utilized by many different bacteria to regulate a wide array of cellular responses, from stress response to expression of virulence factors. The filamentous cyanobacterium Nostoc punctiforme can transiently differentiate motile filaments, called hormogonia, in response to various changes in the environment. Hormogonia utilize a Type IV pilus (T4P) complex in conjunction with a secreted polysaccharide for gliding motility along solid surfaces. This study identified three genes, designated hmpU, hmpW, and hmpV, encoding the protein components o

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40

Vaz, Marcelo Gomes Marçal Vieira. "Diferenciação celular em Nostoc spp: efeito da intensidade luminosa e do padrão de sobreposição dos filamentos." Universidade Federal de Viçosa, 2010. http://locus.ufv.br/handle/123456789/5321.

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Made available in DSpace on 2015-03-26T13:51:49Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1357885 bytes, checksum: 94cbad5284c486e24d0ad442975d1eda (MD5) Previous issue date: 2010-06-25<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>In Nostoc isolates, the vegetative cells multiplication and differentiation of some of them in heterocyst is the life cycle phase in which biomass production occurs. In other phase, many environmental changes can trigger hormogonium differentiation, a transient and a non-growth state. The use of cyanobacteria strains in biotechnologica

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41

Oliveira, Cristiane Alves de. "Caracterização da produção de pigmentos e da atividade antioxidante de Nostoc spp. sob diferentes intensidades luminosas." Universidade Federal de Viçosa, 2012. http://locus.ufv.br/handle/123456789/5353.

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Made available in DSpace on 2015-03-26T13:51:56Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1647302 bytes, checksum: 907782aa4c5aca00a3a2aaadedd6d8f0 (MD5) Previous issue date: 2012-07-06<br>Fundação de Amparo a Pesquisa do Estado de Minas Gerais<br>Cyanobacteria used for centuries as a food has antioxidant mechanisms highly developed and production capacity higher than any other agricultural system, presenting a great potential as a source of natural antioxidant compounds, and various other compounds. One of the factors that interfere with the metabolism of photosynthetic organisms is

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42

Angeloni, Stephen V. "Characterization of the nifUHD cluster and a new myoglobin-like gene from Nostoc commune UTEX 584." Diss., Virginia Tech, 1992. http://hdl.handle.net/10919/37418.

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Sequence analysis of the entire 3.5 kb <i>Hind</i>III genomic DNA fragment previously isolated from <i>Nostoc commune</i> UTEX 584 (Defrancesco and Potts 1988), determined the exact locations of the <i>nifU, nifH</i>, and <i>nifD</i> genes and identified two potential stem loop structures, a direct repeat, and an ORF that codes for a protein with a predicted amino acid sequence similar to that of myoglobin from <i>Paramecium caudatum</i>. The <i>N. commune</i> UTEX 584 myoglobin-like protein has a predicted length of 118 amino acids and molecular mass of 12,906 Da. A PCR copy of the gene (<

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43

Thorsteinsson, Marc Victor III. "Structural and Functional Characterization of Cyanoglobin: A Peripheral Membrane Hemoglobin in Nostoc commune UTEX 584 (Cyanobacteria)." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/29827.

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Investigations of the nitrogen fixing (nif) genes in the cyanobacterium Nostoc commune UTEX 584 revealed a gene encoding a hemoprotein, named cyanoglobin. The cyanoglobin gene was isolated and subcloned into Escherichia coli previously. Cyanoglobin possesses a high oxygen affinity. The study presented here investigated the functional role of cyanoglobin, and encompassed the determination of the kinetic basis for the high oxygen affinity of cyanoglobin through kinetic studies utilizing stopped-flow spectrophotometry and flash photolysis. In addition, studies of cyanoglobin, in the presence

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44

Joardar, Vinita. "Molecular analysis of genes involved in carbohydrate metabolism in the desiccation-tolerant cyanobacterium Nostoc commune UTEX 584." Diss., Virginia Tech, 1995. http://hdl.handle.net/10919/40311.

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Synthesis of water stress proteins (Wsp) is induced upon repeated desiccation and rehydration of immobilized cells of the desiccation-tolerant cyanobacterium <i>Nostoc commune</i> UTEX 584 (<i>Nostoc</i> 584). The Wsp polypeptides synthesized and secreted by field material of N. <i>commune</i> have been extensively characterized and shown to exist as three isoforms with molecular masses of 33, 37 and 39 kDa. In order to understand the role of Wsp in the mechanism of tolerance to water stress an attempt was made to isolate the gene(s) that encodes Wsp in <i>Nostoc</i> 584. A polyclonal antibody

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45

Wase, Nishikant V. "Proteomic and metabolomic analysis of the effects of UV-A radiation on the cyanobacterium nostoc punctiforme ATCC 29133." Thesis, University of Sheffield, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.557618.

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Over the last two decades, thinning of the ozone layer has raised serious concerns throughout the world, since it allows penetration of harmful ultraviolet radiation (UV-R) onto the Earth. Ultraviolet radiation (UV-R, 280-400 nm) has both direct and indirect effects on living organism. Both UV-A and UV-B have deleterious effect on living organisms. Numerous studies were undertaken in the past that have attempted to elucidate the biological effect of UV-B on photosynthetic organisms such as higher plants and microbes such as green algae and cyanobacteria, but there is only very limited knowledg

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Howell, Larry Daniel II. "Characterization of IphP from Nostoc commune UTEX 584 and a Dual Specificity Protein Phosphatase from Anabaena PCC 7120." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/30344.

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Protein phosphorylation is utilized universally as a mechanism of signal transduction. However, the use of tyrosine phosphorylation by bacteria has been a matter of dispute. Conventional wisdom dictated that "prokaryotic phosphorylation" was typified by phosphorylation of histidine and aspartate residues of proteins, while "eukaryotic phosphorylation" was characterized by modification of serine, threonine, or tyrosine residues. Increasing numbers of reports have emerged challenging the traditional view of "prokaryotic" and "eukaryotic" phosphorlyation

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Rivera, Carcamo Maria. "Optimization of Western Blot for detection of cellspecific localization of DNA binding protein fromstarved cells (Dps) in Nostoc punctiforme." Thesis, Uppsala universitet, Institutionen för medicinsk biokemi och mikrobiologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-198683.

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Cyanobacteria belong to the oldest organisms of our planet. They use photosynthesis to produce ATP and gain biomass from carbon dioxide. The cyanobacteria Nostoc punctiforme is a filamentous bacterium that consists of two different types of cells, vegetative cells and heterocysts. The type of cell it differentiates into depends on the media they grow in. In an ammonium-rich medium, the N.punctiforme consists of vegetative cells that differentiate into heterocysts when in the medium is changed to a low-concentration ammonium medium. The ammonium-binding nitrogenase in the heterocysts does not w

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Faulhaber, Katharina [Verfasser], and Iris [Akademischer Betreuer] Maldener. "Detaillierte Charakterisierung von AmiC2, einem Schlüsselenzym für die intrafilamentöse Kommunikation in Nostoc punctiforme ATCC29133 / Katharina Faulhaber ; Betreuer: Iris Maldener." Tübingen : Universitätsbibliothek Tübingen, 2017. http://d-nb.info/1199470228/34.

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Huamaní, Zavaleta Wendy Nicole, and Carhuancho Jesus Isaias Marx Bejarano. "Efecto hepatoprotector del consumo de Nostoc commune (cushuro) frente al daño inducido por dietas ricas en sacarosa en ratones." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2022. https://hdl.handle.net/20.500.12672/17916.

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Evalua el efecto hepatoprotector del consumo de Nostoc commune (cushuro) frente al daño inducido por dietas ricas en sacarosa en ratones. Diseño de tipo experimental. Se emplearon 28 ratones macho con peso promedio de 30 ± 6,2 g y pulverizado de cushuro. Los animales fueron distribuidos en cuatro grupos recibiendo las siguientes dietas durante 50 días: Grupo I: dieta A (sacarosa 10%), grupo II: dieta B (sacarosa 36,5%), grupo III: dieta C (sacarosa 36,5% + cushuro 1%) y grupo IV: dieta D (sacarosa 36,5% + cushuro 3%). Posteriormente se extrajo el hígado y se realizó los análisis bioquímicos e

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Baltodano, Torres Celia Candy. "Evaluación de una crema dermocosmética con potencial actividad antioxidante y efecto humectante a base del extracto de Nostoc sphaericum “cushuro”." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2018. https://hdl.handle.net/20.500.12672/7750.

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Publicación a texto completo no autorizada por el autor<br>Elabora y evalúa la capacidad antioxidante y humectante de una crema dermocosmética a base del extracto liofilizado del Nostoc sphaericum “cushuro”. En primera instancia se realiza un tamizaje fitoquímico cualitativo para determinar los metabolitos que contiene la muestra en estudio, dando como positivo las pruebas de Dragendorf, Mayer, Bertrand, Sonenhei (alcaloides), saponinas y shinoda (flavonoides), a su vez da negativo para la prueba de tricloruro (fenoles); sin embargo, para determinar la actividad antioxidante de la crema, se re

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