José Edgardo Escamilla Marván *

Autor invitado por SIIC

El trabajo contribuye al conocimiento de la fisiología de Bacillus cereus, su explicación genómica y sus relaciones filogenéticas

BACILLUS CEREUS Y EL SUCCINATO. TRANSPORTE, UTILIZACION Y GENOMICA

La enzima succinato:quinona reductasa (SQR) de Bacillus cereus presenta propiedades cinético-moleculares semejantes a la de B. subtilis. Sin embargo, B. cereus es incapaz de utilizar el succinato exógeno. Esto es debido a que carece de un sistema de transporte para ácidos C4-dicarboxílicos. Esta característica y otras propiedades fisiológicas apoyan la propuesta de que el ancestro común del grupo “cereus” de bacterias es un patógeno oportunista.

*José Edgardo Escamilla Marván
describe para SIIC los aspectos relevantes de su trabajo
THE SUCCINATE:MENAQUINONE REDUCTASE OF BACILLUS CEREUS-CHARACTERIZATION OF THE MEMBRANE-BOUND AND PURIFIED ENZYME
Institución principal de la investigación
*Instituto Defisiología Celular, Universidad Nacional Autónoma de México, México, México
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Otros artículos de José Edgardo Escamilla Marván

Del Arenal IP, Svlaeteorova BB, Contreras ML, Rangel P, Dávila JR, Lledías f, Escamilla JE. Haem O and a putative cytochrome bo in a mutant of Bacillus cereus impaired in the synthesis of haem A. Archives Microbiol 167:24-31, 1997.
Contreras ML, Escamilla JE, Del Arenal IP, Dávila JR, D'Mello R, Poole K. An unusual o'-type cytochrome c oxidase in a Bacillus cereus cytochrome a3 mutant has a very high affinity for oxygen. Microbiology UK 145:1563-1573, 1999.
Escamilla JE, Contreras ML, Flores M, García LM. Los sistemas respiratorios bacterianos. En Mensaje Bioquímico Vol. XXIII: Editado por Martínez F, Juárez MA, Pardo JP, Morales S. Facultad de Medicina UNAM, pp. 67-103, 1999.
Flores-Encarnación M, Contreras-Zentella M, Soto-Urzua L, Aguilar GR, Baca B, Escamilla JE. The respiratory system and the diazotrophic activity of Acetobacter diazotrophicus PAL5. J Bacteriol 181:6987-6995, 1999.
Contreras-Zentella M, Mendoza G, Membrillo-Hernández J, Escamilla JE. A novel double heme substitutions produce a functional bo3 variant of the quinol oxidase aa3 of Bacillus cereus: Purification and partial characterization. J Biol Chem 278(34):31473-31478, 2003.
Hernández-Urzúa E, Mills CE, White GP, Contreras-Zentella ML, Escamilla E, Vasudevan SG, Membrillo-Hernández J, Poole RK. Flavohemoglobin Hmp but not its individual domains confers protection from respiratory inhibition by NO in Escherichia coli. J Biol Chem 278(37):34975-34982, 2003.
Lee S, Flores-Encarnación M, Contreras Zentella M, García Flores L, Escamilla JE, Kennedy C. Indole-3-acetic acid biosynthesis is deficient in Gluconacetobacter diazotrophicus strains with mutations in cytochrome c biogenesis genes. J Bacteriol 186(16):5384-5391, 2004.
Chávez-Pacheco JL, Martínez-Yee S, Contreras ML, Gómez-Manso S, Membrillo-Hernández J, Escamilla JE. Partial bioenergetic characterization of Gluconacetobacter xylinum cells released from cellulose by a novel methodology. J Applied Microbiol 99(5):1130-1140, 2005.
Jaramillo RD, Suárez P, Barraza B, Lara P, Therán L, Escamilla JE. Eikenella corrodens: Patogénesis y aspectos clínicos. Colombia Médica 37:228 241, 2006
González B, Martínez S, Chávez JL, Lee S, Castro NA, Domínguez MA, Gómez S, Contreras ML, Kennedy C, Escamilla JE. Respiratory system of Gluconacetobacter diazotrophicus PAL-5. Evidence for a cyanide-sensitive cytochrome bb and cyanide-resistant cytochrome ba quinol oxidases. Biochimica et Biophysica Acta 1757(12):1614-1622, 2006.
Gómez-Manzo S, Contreras-Zentella M, González-Valdez A, Sosa-Torres M, Arreguín-Espinoza R, Escamilla-Marván E. The PQQ-Alcohol Dehydrogenase of Gluconacetobacter diazotrophicus. Int Jour of Food Microbiol 125(1):71-78, 2008.

Para comunicarse con José Edgardo Escamilla Marván mencionar a SIIC como referencia:
eescami@ifc.unam.mx

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Acerca del trabajo completo

BACILLUS CEREUS Y EL SUCCINATO. TRANSPORTE, UTILIZACION Y GENOMICA

Título original en castellano
LA SUCCINATO:MENAQUINONA REDUCTASA DE BACILLUS CEREUS. CARACTERIZACION DE LA ENZIMA MEMBRANAL Y DE LA ENZIMA PURIFICADA

Autor
José Edgardo Escamilla Marván¹, Martha Lucinda Contreras Zentella², Rúben Darío Jaramillo Lanchero³
1 Doctor en Ciencias Químicas, Instituto Defisiología Celular, Universidad Nacional Autónoma de México, México, México, Investigador Titular
2 Doctora en Ciencias Biomédicas, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Técnico Académico Titular
3 Doctor en Ciencias, Universidad de Sucre, Colombia, Investigador

Acceso a la fuente original
Canadian Journal of Microbiology
http://rcm.cnrc.ca

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