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Applied and Environmental Microbiology, March 2008, p. 1936-1940, Vol. 74, No. 6
0099-2240/08/$08.00+0     doi:10.1128/AEM.02509-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Mucin Degradation by Bifidobacterium Strains Isolated from the Human Intestinal Microbiota{triangledown} ,{dagger}

Patricia Ruas-Madiedo, Miguel Gueimonde, María Fernández-García, Clara G. de los Reyes-Gavilán,* and Abelardo Margolles

Departamento de Microbiología y Bioquímica de Productos Lácteos, Instituto de Productos Lácteos de Asturias, CSIC, Carretera de Infiesto s/n, 33300 Villaviciosa, Asturias, Spain

Received 7 November 2007/ Accepted 17 January 2008

The presence of the genes engBF (endo-{alpha}-N-acetylgalactosaminidase) and afcA (1,2-{alpha}-L-fucosidase) was detected in several intestinal Bifidobacterium isolates. Two strains of Bifidobacterium bifidum contained both genes, and they were able to degrade high-molecular weight porcine mucin in vitro. The expression of both genes was highly induced in the presence of mucin.


* Corresponding author. Mailing address: Departamento de Microbiología y Bioquímica de Productos Lácteos, Instituto de Productos Lácteos de Asturias, CSIC, Carretera de Infiesto s/n, 33300 Villaviciosa, Asturias, Spain. Phone: 34 985 893335. Fax: 34 985 892233. E-mail: greyes_gavilan{at}ipla.csic.es

{triangledown} Published ahead of print on 25 January 2008.

{dagger} Supplemental material for this article may be found at http://aem.asm.org/.


Applied and Environmental Microbiology, March 2008, p. 1936-1940, Vol. 74, No. 6
0099-2240/08/$08.00+0     doi:10.1128/AEM.02509-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.




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