Denaturing gradient gel electrophoresis gel expansion (DGGEGE) – An attempt to resolve the limitations of co-migration in the DGGE of complex polymicrobial communities
Gavin P. Gafan,
David A. Spratt,
Gavin P. Gafan
Division of Microbial Diseases, UCL Eastman Dental Institute, 256 Gray's Inn Road, London WC1X 8LD, UK
Search for more papers by this authorCorresponding Author
David A. Spratt
Division of Microbial Diseases, UCL Eastman Dental Institute, 256 Gray's Inn Road, London WC1X 8LD, UK
*Corresponding author. Tel.: +44 20 7915 1107; fax: +44 20 7915 1127., E-mail address: [email protected]Search for more papers by this authorGavin P. Gafan,
David A. Spratt,
Gavin P. Gafan
Division of Microbial Diseases, UCL Eastman Dental Institute, 256 Gray's Inn Road, London WC1X 8LD, UK
Search for more papers by this authorCorresponding Author
David A. Spratt
Division of Microbial Diseases, UCL Eastman Dental Institute, 256 Gray's Inn Road, London WC1X 8LD, UK
*Corresponding author. Tel.: +44 20 7915 1107; fax: +44 20 7915 1127., E-mail address: [email protected]Search for more papers by this authorEdited by C. Edwards
Abstract
Recent molecular approaches for the study of microbial communities such as PCR-cloning have enabled the detection and identification of as-yet-unculturable taxa. Cloning and sequencing of multiple samples is extremely laborious and expensive to perform thoroughly due to the large diversity involved. For this purpose, techniques such as denaturing gradient gel electrophoresis (DGGE) may be better suited. There is increasing evidence suggesting that DGGE of complex polymicrobial communities may be limited by co-migration of different sequences. In this study, we attempt to address this limitation by excising individual bands and running them through a shorter denaturant gradient, a process we have termed “denaturing gradient gel electrophoresis gel expansion” (DGGEGE).
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