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A thermostable GH8 endoglucanase of Enterobacter sp. R1 is suitable for β- glucan deconstruction
Ontañon, Ornella Mailen; Ghio, Silvina; Marrero Diaz De Villegas, Rubén; Garrido, Mercedes Maria; Talia, Paola Mónica; Fehér, Csaba; Campos, Eleonora (Elsevier, 2019-11)Glycoside hydrolase family 8 (GH8) includes endoglucanases, lichenases, chitosanases and xylanases, which are essential for polysaccharides breakdown. In this work, we studied a thermally stable GH8 from the cellulose ... -
Draft Genome Sequence of Cellulolytic and Xylanolytic Cellulomonas sp. Strain B6 Isolated from Subtropical Forest Soil
Piccinni, Florencia Elizabeth; Murua, Yanina; Ghio, Silvina; Talia, Paola Mónica; Rivarola, Maximo Lisandro; Campos, Eleonora (2016-08)The genome information will be useful for studies of microbial enzymes for industrial application in lignocellulosic biomass utilization. -
EcXyl43 β-xylosidase: molecular modeling, activity on natural and artificial substrates, and synergism with endoxylanases for lignocellulose deconstruction
Ontañon, Ornella Mailén; Ghio, Silvina; Marrero Diaz De Vill, Rubén; Piccinni, Florencia Elizabeth; Talia, Paola Mónica; Cerutti, Maria Laura; Campos, Eleonora (Springer, 2018-08)Biomass hydrolysis constitutes a bottleneck for the biotransformation of lignocellulosic residues into bioethanol and high-value products. The efficient deconstruction of polysaccharides to fermentable sugars requires ... -
GH10 XynA is the main xylanase identified in the crude enzymatic extract of Paenibacillus sp. A59 when grown on xylan or lignocellulosic biomass
Ghio, Silvina; Insani, Ester Marina; Piccinni, Florencia Elizabeth; Talia, Paola Mónica; Grasso, Daniel Horacio; Campos, Eleonora (2016)A novel bacterial isolate with polysaccharides degrading activity was identified as Paenibacillus sp., andnamed Paenibacillus sp. A59. Even though it is a strict mesophile, optimal xylanase activity of the crudeenzymatic ... -
Neotropical termite microbiomes as sources of novel plant cell wall degrading enzymes
Romero Victorica, Matias; Soria, Marcelo Abel; Batista-García, Ramón Alberto; Ceja-Navarro, Javier A.; Vikram, Surendra; Ortiz, Maximiliano; Ontañon, Ornella; Ghio, Silvina; Martínez-Ávila, Liliana; Quintero García, Omar Jasiel; Etcheverry, Clara; Campos, Eleonora; Cowan, Donald; Arneodo Larochette, Joel Demian; Talia, Paola Mónica (Springer Nature, 2020-03-02)In this study, we used shotgun metagenomic sequencing to characterise the microbial metabolic potential for lignocellulose transformation in the gut of two colonies of Argentine higher termite species with different ... -
Optimisation of xylanases production by two Cellulomonas strains and their use for biomass deconstruction
Ontañon, Ornella Mailen; Bedő, Soma; Ghio, Silvina; Garrido, Mercedes Maria; Topalian, Juliana; Jahola, Dóra; Fehér, Anikó; Valacco, Maria Pia; Campos, Eleonora; Fehér, Csaba (Springer, 2021-05)One of the main distinguishing features of bacteria belonging to the Cellulomonas genus is their ability to secrete multiple polysaccharide degrading enzymes. However, their application in biomass deconstruction still ... -
Optimization of cellobiohydrolase production and secretome analysis of Trametes villosa LBM 033 suitable for lignocellulosic bioconversion
Coniglio, Romina O.; Fonseca, María I.; Diaz, Gabriela V.; Ontañon, Ornella Mailén; Ghio, Silvina; Campos, Eleonora; Zapata, Pedro Darío (Taylor & Francis, 2019-04)The production of bioethanol from lignocellulosic biomass comprises the enzymatic hydrolysis of lignocellulosic structures by three major cellulases. Among them, cellobiohydrolases are considered to be key enzymes playing ... -
Paenibacillus sp. A59 GH10 and GH11 extracellular endoxylanases: application in biomass bioconversion
Ghio, Silvina; Ontañon, Ornella Mailén; Piccinni, Florencia Elizabeth; Marrero Diaz De Vill, Rubén; Talia, Paola Mónica; Grasso, Daniel Horacio; Campos, Eleonora (Springer, 2018-03)The cost-efficient degradation of xylan to fermentable sugars is of particular interest in second generation bioethanol production, feed, food, and pulp and paper industries. Multiple potentially secreted enzymes involved ... -
Paenibacillus xylanivorans sp. nov., a xylan-degrading bacterium isolated from decaying forest soil
Ghio, Silvina; Sauka, Diego Hernan; Ferrari, Alejandro E.; Piccinni, Florencia Elizabeth; Ontañon, Ornella Mailén; Campos, Eleonora (Microbiology Society, 2019-12)A xylanolytic bacterial strain, named A59T, was isolated from a forest soil consortium in southern Argentina. Strain A59T is a Gram-stain-positive, facultative anaerobic, endospore-forming and rod-shaped bacterium. Its ... -
Prospección y caracterización de bacterias celulolíticas y hemicelulolíticas
Ghio, Silvina (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 2018)La prospección de bacterias con capacidad de degradar lignocelulosa permite la identificación de nuevas enzimas con potencial aplicación en numerosos procesos industriales. En este trabajo el objetivo fue la obtención de ... -
Secretome profile of Cellulomonas sp. B6 growing on lignocellulosic substrates
Piccinni, Florencia Elizabeth; Ontañon, Ornella Mailén; Ghio, Silvina; Sauka, Diego Hernan; Talia, Paola Mónica; Rivarola, Maximo Lisandro; Valacco, María Pía; Campos, Eleonora (Wiley; Society for Applied Microbiology, 2018-12)Aims: Lignocellulosic biomass deconstruction is a bottleneck for obtaining biofuels and value‐added products. Our main goal was to characterize the secretome of a novel isolate, Cellulomonas sp. B6, when grown on residual ... -
Structural and molecular dynamics investigations of ligand stabilization via secondary binding site interactions in Paenibacillus xylanivorans GH11 xylanase
Briganti, Lorenzo; Capetti, Caio; Pellegrini, Vanessa O. A.; Ghio, Silvina; Campos, Eleonora; Nascimento, Alessandro S.; Polikarpov, Igor (Elsevier, 2021-03)Glycoside hydrolases (GHs) are essential for plant biomass deconstruction. GH11 family consist of endo-β-1,4-xylanases which hydrolyze xylan, the second most abundant cell wall biopolymer after cellulose, into small ... -
Synergic activity of Cel8Pa β-1,4 endoglucanase and Bg1Pa β-glucosidase from Paenibacillus xylanivorans A59 in beta-glucan conversio
Ghio, Silvina; Bradanini, María B.; Garrido, Mercedes Maria; Ontañon, Ornella Mailen; Piccinni, Florencia Elizabeth; Marrero Diaz De Vill, Rubén; Talia, Paola Mónica; Campos, Eleonora (Elsevier, 2020-12)In the efficient bioconversion of polysaccharides from lignocellulosic biomass, endoglucanases and β-glucosidases are key enzymes for the deconstruction of β-glucans. In this work, we focused on a GH8 endoglucanase ...