PMID- 16177293 OWN - NLM STAT- MEDLINE DCOM- 20051128 LR - 20191210 IS - 0019-9567 (Print) IS - 1098-5522 (Electronic) IS - 0019-9567 (Linking) VI - 73 IP - 10 DP - 2005 Oct TI - Transcriptional profiling of target of RNAIII-activating protein, a master regulator of staphylococcal virulence. PG - 6220-8 AB - Staphylococcus aureus is a gram-positive bacterium that is part of the normal healthy flora but that can become virulent and cause infections by producing biofilms and toxins. The production of virulence factors is regulated by cell-cell communication (quorum sensing) through the histidine phosphorylation of target of RNAIII-activating protein (TRAP), which is a 21-kDa protein that is highly conserved among staphylococci. Using microarray analysis, we show here that the expression and phosphorylation of TRAP upregulate the expression of most, if not all, toxins known to date, as well as their global regulator agr. In addition, we show here that the expression and phosphorylation of TRAP are also necessary for the expression of genes known to be necessary for the survival of the bacteria in a biofilm, like arc, pyr, and ure. TRAP is thus demonstrated to be a master regulator of staphylococcal pathogenesis. FAU - Korem, Moshe AU - Korem M AD - Department of Human Microbiology, Sackler School of Medicine, Tel Aviv University, Israel. FAU - Gov, Yael AU - Gov Y FAU - Kiran, Madanahally D AU - Kiran MD FAU - Balaban, Naomi AU - Balaban N LA - eng GR - R21 AI054858/AI/NIAID NIH HHS/United States GR - R21-AI054858-01/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Infect Immun JT - Infection and immunity JID - 0246127 RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (Agr protein, Staphylococcus aureus) RN - 0 (Bacterial Proteins) RN - 0 (Phosphoproteins) RN - 0 (SAR protein, Lycopersicon esculentum) RN - 0 (TRAP protein, Staphylococcus) RN - 0 (Trans-Activators) RN - EC 2.7.7.6 (RNA Polymerase III) RN - EC 3.6.5.2 (Monomeric GTP-Binding Proteins) SB - IM MH - Adaptor Proteins, Signal Transducing MH - Bacterial Proteins/genetics/*metabolism/physiology MH - Biofilms/growth & development MH - Gene Expression Profiling MH - *Gene Expression Regulation, Bacterial MH - Monomeric GTP-Binding Proteins/metabolism MH - Oligonucleotide Array Sequence Analysis MH - Phosphoproteins/genetics/*metabolism/physiology MH - Phosphorylation MH - RNA Polymerase III/metabolism MH - Staphylococcus aureus/*genetics/*pathogenicity MH - Trans-Activators/metabolism MH - Transcription, Genetic MH - Virulence/genetics PMC - PMC1230921 EDAT- 2005/09/24 09:00 MHDA- 2005/12/13 09:00 PMCR- 2005/10/01 CRDT- 2005/09/24 09:00 PHST- 2005/09/24 09:00 [pubmed] PHST- 2005/12/13 09:00 [medline] PHST- 2005/09/24 09:00 [entrez] PHST- 2005/10/01 00:00 [pmc-release] AID - 73/10/6220 [pii] AID - 0436-05 [pii] AID - 10.1128/IAI.73.10.6220-6228.2005 [doi] PST - ppublish SO - Infect Immun. 2005 Oct;73(10):6220-8. doi: 10.1128/IAI.73.10.6220-6228.2005.