A single band does not always represent single bacterial strains in denaturing gradient gel electrophoresis analysis

Citation
H. Sekiguchi et al., A single band does not always represent single bacterial strains in denaturing gradient gel electrophoresis analysis, BIOTECH LET, 23(15), 2001, pp. 1205-1208
Citations number
13
Categorie Soggetti
Biotecnology & Applied Microbiology",Microbiology
Journal title
BIOTECHNOLOGY LETTERS
ISSN journal
01415492 → ACNP
Volume
23
Issue
15
Year of publication
2001
Pages
1205 - 1208
Database
ISI
SICI code
0141-5492(200108)23:15<1205:ASBDNA>2.0.ZU;2-3
Abstract
DNA in a denaturing gradient gel electrophoresis (DGGE) band that could not be sequenced after recovery from the gel was cloned into a TA cloning vect or and a library was constructed and then 13 clones randomly picked up from the library was sequenced. Although the excised DNA from the DGGE gel show ed a single band, the library consisted of several different sequences phyl ogenetically. This phenomenon was also observed in several other DGGE bands . Therefore, this suggests that a single DGGE band does not always represen t a single bacterial strain and a new bias for quantitative analyses based on band intensities has been identified.