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Identification of the phosphotransacetylase (pta) and acetate kinase (ackA) regulons in Streptococcus mutans UA159

ABSTRACT: Transcriptional comparisons between wild-type Streptococcus mutans UA159 and two mutant strains (∆ackA and ∆ackA pta).

ORGANISM(S): Streptococcus mutans UA159 Streptococcus mutans

PROVIDER: GSE46835 | GEO | 2013/05/11

SECONDARY ACCESSION(S): PRJNA202444

REPOSITORIES: GEO

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Identification of the phosphotransacetylase (pta) and acetate kinase (ackA) regulons in Streptococcus mutans UA159

Project description:Transcriptional comparisons between wild-type Streptococcus mutans UA159 and two mutant strains (M-bM-^HM-^FackA and M-bM-^HM-^FackA pta). On growth condition in defined FMC medium, WT vs. either M-bM-^HM-^FackA or M-bM-^HM-^FackA pta mutants. Biological replicates: 10 control, 5 each mutant, independently grown and harvested. One replicate per array.

2013-05-11 | E-GEOD-46835 | biostudies-arrayexpress

Streptococcus mutans UA159

Project description:Identification of the phosphotransacetylase (pta) and acetate kinase (ackA) regulons in Streptococcus mutans UA159

| PRJNA202444 | ENA

Streptococcus mutans UA159 control vs. Streptococcus mutans UA159 supplemented with 20 uM 4,5-dihydroxy-2,3-pentadione (DPD) at 3 different pH values

Project description:Transcriptional profiling of early logarithmic phase culture (O.D=0.2-0.3) of Streptococcus mutans UA159 comparing control of untreated Streptococcus mutans UA159 bacteria with Streptococcus mutans UA159 bacteria spplemented with 20µM synthetic DPD (pre-AI-2) which regulates gene expression via AI-2 quorum sensing system.Three compairisons were performed at pHs of 7,6 and 5.

2010-07-29 | GSE23159 | GEO

Streptococcus mutans UA159 vs. spx mutant strains

Project description:Transcriptional profiling to investigate the regulatory roles of SpxA and SpxB of S. mutans. RNA was extracted from four replicate samples of each strain of interest (spxA mutant, spxB mutant, spxAB double-mutant, UA159 wild type) and labeled with Cy3. For each replicate, labeled RNA was hybridized to slides along with Cy5-labeled reference RNA, extracted from S. mutans UA159 cells grown to mid-log.

2010-05-16 | E-GEOD-19656 | biostudies-arrayexpress

Streptococcus mutans UA159 vs. fabT mutant strain, pH5 vs. pH7

Project description:Transcriptional analysis of the regulator FabT in S. mutans RNA was extracted from 4 replicate samples of S. mutans UA159 and MU1591 (M-bM-^HM-^FfabT) grown in continuous culture to steady-state pH values of 7 and 5. RNA was labeled with Cy3. For each replicate, labeled RNA was hybridized to slides along with Cy5-labeled reference RNA, extracted from S. mutans UA159 cultures grown to mid-log.

2012-05-31 | E-GEOD-36960 | biostudies-arrayexpress

Streptococcus mutans UA159 vs. clp mutant strains

Project description:Transcriptional profiling to investigate the roles of ClpP and ClpX of S. mutans RNA was extracted from four replicate samples of each strain of interest and labeled with Cy3. For each replicate, labeled RNA was hybridized to slides along with Cy5-labeled reference RNA, extracted from S. mutans UA159 cells grown to mid-log.

2011-06-10 | E-GEOD-29871 | biostudies-arrayexpress

Streptococcus mutans UA159; 10 mM Glucose Versus 100 mM Glucose

Project description:Transcriptional Profiling of Streptococcus mutans UA159 Grown in Continuous Culture using TV Media Supplemented With 10 mM vs 100 mM Glucose. The genetic and phenotypic responses of Streptococcus mutans, an organism known to be strongly associated with the development of dental caries, to changes in carbohydrate availability were investigated. S. mutans UA159 or a derivative of UA159 lacking ManL, which is the EIIAB component (EIIABMan) of a mannose/glucose permease of the phosphoenolpyruvate:sugar phosphotransferase system (PTS) and a dominant effector of catabolite repression, were grown in continuous culture to steady-state in conditions of excess (100 mM) or limiting (10 mM) glucose. Microarrays using RNA from S. mutans UA159 revealed that 174 genes were differentially expressed in response to changes in carbohydrate availability (P < 0.001). Glucose-limited cells possessed higher PTS activity, could acidify the environment more rapidly and to a greater extent, and produced more ManL protein than cultures grown with excess glucose. Loss of ManL adversely affected carbohydrate transport and acid tolerance. Comp arison of the HPr protein in S. mutans UA159 and the manL deletion strain indicated that the differences in behaviors of the strains were not due to major differences in HPr pools or HPr phosphorylation status. Therefore, carbohydrate availability alone can dramatically influence the expression of physiologic and biochemical pathways that contribute directly to the virulence of S. mutans, and ManL has a profound influence on this behavior. Two-condition experiment, growth in 10 mM vs 100 mM glucose. Biological replicates: 3 per condition, independently grown and harvested. One replicate per array

2013-12-03 | E-GEOD-51362 | biostudies-arrayexpress

Streptococcus mutans UA159 with or without 8.4% oxygen vs. nox mutant strain. pH7

Project description:Transcriptional analysis of the effects of oxygen concentraion in S. mutans RNA was extracted from 3 or 4 replicate samples of S. mutans UA159, UA159 grown in 8.4 % oxygen concentration and MU1020 (M-bM-^HM-^Fnox) grown in continuous culture to steady-state pH values of 7. RNA was labeled with Cy3. For each replicate, labeled RNA was hybridized to slides along with Cy5-labeled reference RNA, extracted from S. mutans UA159 cultures grown to mid-log.

2012-10-04 | E-GEOD-38803 | biostudies-arrayexpress

Streptococcus mutans UA159 with or without 8.4% oxygen vs. nox mutant strain. pH5

Project description:Transcriptional analysis of the effects of oxygen concentraion in S. mutans RNA was extracted from 3 or 4 replicate samples of S. mutans UA159, UA159 grown in 8.4 % oxygen concentration and MU1020 (M-bM-^HM-^Fnox) grown in continuous culture to steady-state pH values of 5. RNA was labeled with Cy3. For each replicate, labeled RNA was hybridized to slides along with Cy5-labeled reference RNA, extracted from S. mutans UA159 cultures grown to mid-log.

2014-04-01 | E-GEOD-56118 | biostudies-arrayexpress

Streptococcus mutans UA159 grown in the presence of glucose or maltose pH7 and pH5

Project description:Transcriptional analysis of the effects of sugar source in S. mutans RNA was extracted from 4 replicate samples of S. mutans UA159, UA159 grown in glucose or maltose in continuous culture to steady-state pH values of 7 or 5. RNA was labeled with Cy3. For each replicate, labeled RNA was hybridized to slides along with Cy5-labeled reference RNA, extracted from S. mutans UA159 cultures grown to mid-log.

2014-06-01 | E-GEOD-55952 | biostudies-arrayexpress

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