Morpho-physiologic characteristics of Escherichia coli and Shigella flexneri 2a carrying the htpR15 gene.

Tetz, V V; Rybalchenko, O V; Savkova, G A

Tetz, V V; Rybalchenko, O V; Savkova, G A.

Afiliación

Tetz VV; St. Petersburg Pavlov Medical Institute, Russia.

J Basic Microbiol ; 33(2): 131-9, 1993.

Article en En | MEDLINE | ID: mdl-8336285

RESUMEN

Electron microscopic examination of the morphology of normal Escherichia coli MC4100 and Shigella flexneri cells and their htpR-defective recombinants has shown the presence in the latter of noncrystalline granules after growth at 37 degrees C. The defect of the htpR gene leads to some changes in ultrastructure of bacterial colonies and the intensification of the processes of development and aging of colonies as integral structures. These phenomena are manifested by early formation of intercellular contacts and thick surface films as well as the enhanced destruction of microorganisms. The recombinant Shigella strain grown at 30 degrees C retained its ability to provoke keratoconjunctivitis.

Asunto(s)

Escherichia coli/genética; Proteínas de Choque Térmico/genética; Mutación; Shigella flexneri/genética; Factor sigma/genética; Transducción Genética; Escherichia coli/fisiología; Escherichia coli/ultraestructura; Microscopía Electrónica; Shigella flexneri/fisiología; Shigella flexneri/ultraestructura

Buscar en Google

Añadir a Mi BVS

Imprimir

XML

PubMed Links

Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Shigella flexneri / Factor sigma / Transducción Genética / Escherichia coli / Proteínas de Choque Térmico / Mutación Idioma: En Revista: J Basic Microbiol Asunto de la revista: MICROBIOLOGIA Año: 1993 Tipo del documento: Article País de afiliación: Rusia Pais de publicación: Alemania

Buscar en Google

Añadir a Mi BVS

Imprimir

XML

PubMed Links