IBT-UNAM : M.C. Josefina Guzman Aparicio | M.C. Josefina Guzman Aparicio
 Técnico Académico Grupo de la Dra. Elda Guadalupe Espin | email: | josefina | @ibt.unam.mx |
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Teléfonos Oficina +52 (777) 311-4900 ext 236
Laboratorio +52 (777) 329-1629
desde la CDMX 562-27629
red UNAM 27629
+52 (777) 311-4900 ext 236
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Publicaciones recientes
Martinez-Ortiz,I.C. Ahumada-Manuel,C.L. Hsueh,B.Y. Guzman,J. Moreno,S. Cocotl-Yanez,M. Waters,C.M. Zamorano-Sanchez,D. Espin,G. Nunez,C.
2020. Cyclic di-GMP-Mediated Regulation of Extracellular Mannuronan C-5 Epimerases Is Essential for Cyst Formation in Azotobacter vinelandii Journal of Bacteriology, 202, e00135-20.
Ahumada-Manuel,C.L. Martinez-Ortiz,I.C. Hsueh,B.Y. Guzman,J. Waters,C.M. Zamorano-Sanchez,D. Espin,G. Nunez,C.
2020. Increased c-di-GMP Levels Lead to the Production of Alginates of High Molecular Mass in Azotobacter vinelandii Journal of Bacteriology, 202, e00134-20.
Martinez-Valenzuela,M. Guzman,J. Moreno,S. Ahumada-Manuel,C.L. Espin,G. Nunez,C.
2018. Expression of the sRNAs CrcZ and CrcY modulate the strength of carbon catabolite repression under diazotrophic or non-diazotrophic growing conditions in Azotobacter vinelandii PLoS ONE, 13, e0208975.
Rosas-Galvan,N.S. Martinez-Morales,F. Marquina-Bahena,S. Tinoco-Valencia,R. Serrano-Carreon,L. Bertrand,B. Leon-Rodriguez,R. Guzman-Aparicio,J. Alvarez-Berber,L. Trejo-Hernandez,M.D.R.
2018. Improved production, purification and characterization of biosurfactants produced by Serratia marcescens SM3 and its isogenic SMRG-5 strain Biotechnology and Applied Biochemistry, 85, 690-700.
Adaya,L. Millan,M. Pena,C. Jendrossek,D. Espin,G. Tinoco-Valencia,R. Guzman,J. Pfeiffer,D. Segura,D.
2018. Inactivation of an intracellular poly-3-hydroxybutyrate depolymerase of Azotobacter vinelandii allows to obtain a polymer of uniform high molecular mass Applied Microbiology and Biotechnology, 102, 2693-2707.
Quiroz-Rocha,E. Bonilla-Badia,F. Garcia-Aguilar,V. Lopez-Pliego,L. Serrano-Roman,J. Cocotl-Yanez,M. Guzman,J. Ahumada-Manuel,C.L. Muriel-Millan,L.F. Castaneda,M. Espin,G. Nunez,C.
2017. Two-component system CbrA/CbrB controls alginate production in Azotobacter vinelandii Microbiology, 163, 1105-1115.
Quiroz-Rocha,E. Moreno,R. Hernandez-Ortiz,A. Fragoso-Jimenez,J.C. Muriel-Millan,L.F. Guzman,J. Espin,G. Rojo,F. Nunez,C.
2017. Glucose uptake in Azotobacter vinelandii occurs through a GluP transporter that is under the control of the CbrA/CbrB and Hfq-Crc systems Scientific Reports, 7, 858.
Ahumada-Manuel,C.L. Guzman,J. Pena,C. Quiroz-Rocha,E. Espin,G. Nunez,C.
2017. The signaling protein MucG negatively affects the production and the molecular mass of alginate in Azotobacter vinelandii Applied Microbiology and Biotechnology, 101, 1521-1534.
Romero,Y. Guzman,J. Moreno,S. Cocotl-Yanez,M. Vences-Guzman,M.A. Castaneda,M. Espin,G. Segura,D.
2016. The GacS/A-RsmA Signal Transduction Pathway Controls the Synthesis of Alkylresorcinol Lipids that Replace Membrane Phospholipids during Encystment of Azotobacter vinelandii SW136 PLoS ONE, 11, e0153266.
Romero,Y. Moreno,S. Guzman,J. Espin,G. Segura,D.
2013. The Sigma Factor RpoS Controls Alkylresorcinol Synthesis Through ArpR, a LysR-Type Regulatory Protein During Encystment of Azotobacter vinelandii Journal of Bacteriology, 195, 1834-1844.
Nunez,C. Pena,C. Kloeckner,W. Hernandez-Eligio,A. Bogachev,A.V. Moreno,S. Guzman,J. Buchs,J. Espin,G.
2013. Alginate synthesis in Azotobacter vinelandii is increased by reducing the intracellular production of ubiquinone Applied Microbiology and Biotechnology, 97, 2503-2512.
Nunez,C. Bogachev,A.V. Guzman,G. Tello,I. Guzman,J. Espin,G.
2009. The Na+-translocating NADH : ubiquinone oxidoreductase of Azotobacter vinelandii negatively regulates alginate synthesis Microbiology, 155, 249-256.
Gaona,G. Nunez,C. Goldberg,J.B. Linford,A.S. Najera,R. Castaneda,M. Guzman,J. Espin,G. Soberon-Chavez,G.
2004. Characterization of the Azotobacter vinelandii algC gene involved in alginate and lipopolysaccharide production Fems Microbiology Letters, 238, 199-206.
Segura,D. Guzman,J. Espin,G.
2003. Azotobacter vinelandii mutants that overproduce poly-beta-hydroxybutyrate or alginate Applied Microbiology and Biotechnology, 63, 159-163.
Peralta-Gil,M. Segura,D. Guzman,J. Servin-Gonzalez,L. Espin,G.
2002. Expression of the Azotobacter vinelandii Poly-beta-Hydroxybutyrate Biosynthetic phbBAC Operon Is Driven by Two Overlapping Promoters and Is Dependent on the Transcriptional Activator PhbR Journal of Bacteriology, 184, 5672-5677.
Gama-Castro,S. Nunez,C. Segura,D. Moreno,S. Guzman,J. Espin,G.
2001. Azotobacter vinelandii Aldehyde Dehydrogenase Regulated by sigma(54): Role in Alcohol Catabolism and Encystment Journal of Bacteriology, 183, 6169-6174.
Nunez,C. Leon,R. Guzman,J. Espin,G. Soberon-Chavez,G.
2000. Role of Azotobacter vinelandii mucA and mucC gene products in alginate production Journal of Bacteriology, 182, 6550-6556.
Castaneda,M. Guzman,J. Moreno,S. Espin,G.
2000. The GacS sensor kinase regulates alginate and poly-beta-hydroxybutyrate production in Azotobacter vinelandii Journal of Bacteriology, 182, 2624-2628.
Vazquez,A. Moreno,S. Guzman,J. Alvarado,A. Espin,G.
1999. Transcriptional organization of the Azotobacter vinelandii algGXLVIFA genes: characterization of algF mutants Gene, 232, 217-222.
Moreno,S. Najera,R. Guzman,J. Soberon-Chavez,G. Espin,G.
1998. Role of alternative sigma factor algU in encystment of Azotobacter vinelandii Journal of Bacteriology, 180, 2766-2769.
Caba,J.M. Guzman,J. Ortega,J.L. Lluch,C. Lara,M. Ligero,F.
1997. Purification and partial characterization of glutamine synthetase from root nodules of faba bean Ars Pharmaceutica, 38, 345-356.
Mejia-Ruiz,H. Guzman,J. Moreno,S. Soberon-Chavez,G. Espin,G.
1997. The Azotobacter vinelandii alg8 and alg44 genes are essential for alginate synthesis and can be transcribed from an algD-independent promoter Gene, 199, 271-277.
Mejia-Ruiz,H. Moreno,S. Guzman,J. Najera,R. Leon,R. Soberon-Chavez,G. Espin,G.
1997. Isolation and characterization of an Azotobacter vinelandii algK mutant Fems Microbiology Letters, 156, 101-106.
Martinez,P. Guzman,J. Espin,G.
1997. A mutation impairing alginate production increased accumulation of poly-beta-hydroxybutyrate in Azotobacter vinelandii Biotechnology Letters, 19, 909-911.
Espin,G. Moreno,S. Guzman,J.
1994. Molecular genetics of the glutamine synthetases in Rhizobium species Critical Reviews in Microbiology, 20, 117-123.
Noguez,R. Moreno,S. Guzman,J. Espin,G.
1994. The effect of the nitrogen and ntrC on the adenylylation of glutamine synthetase I in Rhizobium etli Canadian Journal of Microbiology, 40, 965-968.
Moreno,S. Meza,R. Guzman,J. Carabez,A. Espin,G.
1991. The glnA Gene of Rhizobium leguminosarum bv. phaseoli and Its Role In Symbiosis Molecular Plant-Microbe Interactions, 4, 619-622.
Sanchez,F. Calva,E. Campomanes,M. Blanco,L. Guzman,J. Saborio,J.L. Palacios,R.
1980. Heterogeneity of glutamine synthetase polypeptides in Neurospora crassa Journal of Biological Chemistry, 255, 2231-2234 * .
Mora,J. Davila,G. Espin,G. Gonzalez,A. Guzman,J. Hernandez.G. Hummelt,G. Lara,M. Martinez,E. Mora,Y. Romero,D. 1980. Glutamine Metabolism in Neurospora crassa en: Palacios,J. Glutamine: Metabolism, Enzymology, and Regulation. Academic Press. pags. 185-211 *
* Indica publicación con otra institución de adscripción
