Open AccessShifts in membrane fatty acid profiles associated with acid adaptation of Streptococcus mutans
Author(s) -
Quivey Robert G.,
Faustoferri Roberta,
Monahan Kelly,
Marquis Robert
Publication year - 2000
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.2000.tb09211.x
Subject(s) - streptococcus mutans , streptococcus sobrinus , fatty acid , biochemistry , chemistry , chemostat , streptococcus , membrane , bacteria , microbiology and biotechnology , biology , genetics
Cells of Streptococcus mutans UA159 physiologically adapted to acidification during growth at pH 5 in glucose‐limited chemostat cultures were enriched in mono‐unsaturated and longer chain fatty acids compared with unadapted cells grown under the same conditions but at pH 7. Ratios of unsaturated to saturated fatty acids in the cells were, respectively, 1.2 and 0.3. Cyclopropane fatty acids were not detected. Streptococcus sobrinus 6715, which is known to have minimal acid‐adaptive capacity, showed only minimal change in membrane fatty acids.