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1 apabilities in the presence or absence of an autoinducer.
2 in the complex still retained tightly bound autoinducer.
3 ze the cell response to an exogenously added autoinducer.
4 ter the ability of the bacteria to access an autoinducer.
5 blages supplemented with exogenous, purified autoinducer.
6 that are regulated by imported oligopeptide autoinducers.
7 the most rapid to respond to quorum-sensing autoinducers.
8 diated by small signaling molecules known as autoinducers.
9 hanging diffusible signal molecules known as autoinducers.
10 nd-binding domains complexed with noncognate autoinducers.
11 nsing is mediated by signal molecules called autoinducers.
12 n and detection of secreted molecules called autoinducers.
13 unicate via secreted signal molecules called autoinducers.
14 of extracellular signalling molecules called autoinducers.
15 receptors for acyl-homoserine lactone (AHL) autoinducers.
16 from a microorganism that also produces AHL autoinducers.
17 tection of small signalling molecules called autoinducers.
18 n of low-molecular-weight molecules known as autoinducers.
19 by means of chemical signal molecules called autoinducers.
20 and detection of signalling molecules called autoinducers.
21 ecrete hormone-like compounds referred to as autoinducers.
22 to extracellular signalling molecules called autoinducers.
23 mediated by small molecule signals known as autoinducers.
24 e with extracellular signal molecules called autoinducers.
25 using extracellular signal molecules termed autoinducers.
26 g, and responding to signal molecules called autoinducers.
27 exchange of chemical signal molecules called autoinducers.
28 nother by exchanging chemical signals called autoinducers.
29 enhancing discrimination against noncognate autoinducers.
30 on-wide detection of signal molecules called autoinducers.
31 nse to extracellular signal molecules called autoinducers.
32 using extracellular signal molecules called autoinducers.
33 up-wide detection of signal molecules called autoinducers.
34 e required for competence are quorum-sensing autoinducers.
35 oduce and detect diffusible molecules called autoinducers.
36 ion of extracellular signal molecules called autoinducers.
37 nse to extracellular signal molecules called autoinducers.
38 to express the autoinducer molecule cholera autoinducer 1 (CAI-1) (shown previously to prevent virul
40 yme involved in the biosynthesis of cholerae autoinducer-1 (CAI-1), the major Vibrio cholerae autoind
41 atio of signal to cell number for V. harveyi autoinducer-1 and E. coli autoinducer-2 varied as the cu
43 sis of polyamines, N-acylhomoserine lactone (autoinducer-1), and production of vitamins and other bio
45 ne, which encodes an enzyme that synthesizes autoinducer 2 (AI-2) in other gram-negative bacteria.
46 y network for the uptake of Escherichia coli autoinducer 2 (AI-2) is comprised of a transporter compl
52 tein interacts with cognate and heterologous autoinducer 2 (AI-2) signals and suggested that the rbsD
55 model for E.coli biofilm formation driven by Autoinducer 2 (AI-2) which is easy to configure for diff
57 of the LuxS-associated quorum sensing signal autoinducer 2 (AI-2), it was demonstrated that this orth
58 cross-species bacterial communication signal autoinducer 2 (AI-2), produced by the purified enzymes P
67 nd increased intracellular concentrations of autoinducer 2 (AI-2); hence, YdgG enhances transport of
68 The gene expression data also suggested that autoinducer 2 uptake was repressed upon exposure to epin
69 hen present with another signaling molecule, autoinducer 2, at high concentrations) and determined th
78 via a family of molecules generically termed autoinducer-2 (AI-2) is essential for many phenotypes.
86 . cholerae colonization, that R. obeum luxS (autoinducer-2 (AI-2) synthase) expression and AI-2 produ
90 hile most autoinducers are species specific, autoinducer-2 (AI-2), first identified in the marine bac
91 scores of bacteria, and its signal molecule, autoinducer-2 (AI-2), is synthesized as a product of 1-c
92 abundance, and the other autoinducer, called autoinducer-2 (AI-2), is widely produced by different ba
97 synthesizes 4,5-dihydroxy-2,3-pentanedione (autoinducer-2 [AI-2]) and responds to AI-2 by measurably
98 e salvage pathway, the SAM radical pathways, autoinducer-2 biosynthesis, and menaquinone biosynthesis
99 These data indicate that V. harveyi uses autoinducer-2 for quorum sensing, while the other molecu
101 is technique was applied to the detection of autoinducer-2 from Escherichia coli and Vibrio harveyi i
103 for bacterial colonization or infection, and autoinducer-2 has been proposed as a universal interspec
104 r outer membrane protein; luxS, encoding the autoinducer-2 synthase; nadE, encoding an essential NAD
106 Although V. harveyi was able to keep the autoinducer-2 to cell number ratio constant, the ratio o
109 abolic pathways and limits the production of autoinducer-2, a molecule proposed to play a central rol
110 ed by a quorum sensing (QS) signal molecule, autoinducer-2, to express surface-displayed fusions cons
111 and norepinephrine, and bacterially produced autoinducer 3 (AI-3), through two-component systems.
112 ly with a bacterial quorum sensing molecule, autoinducer 3 (AI-3), to affect bacterial virulence and
113 pathogen Vibrio cholerae, the quorum-sensing autoinducer 3,5-dimethyl-pyrazin-2-ol (DPO) binds the re
114 a quorum-sensing (QS) system composed of the autoinducer 3,5-dimethylpyrazin-2-ol (DPO) and receptor
115 inducing (Ti) plasmid in the presence of the autoinducer 3-oxooctanoyl-homoserine lactone (OOHL).
116 produced by the intestinal microbial flora, autoinducer-3 (AI-3), and the host hormones epinephrine
117 als from the microbiota or the host, such as autoinducer-3 (AI-3), epinephrine (Epi), and norepinephr
120 of coral cell-free culture fluid (CFCF) and autoinducer (a quorum sensing signaling molecule) on cor
123 ommunication; however, a recently discovered autoinducer AI-2 has been proposed to serve as a 'univer
124 S mode, but it is, in fact, the broadly made autoinducer AI-2 that sets the pace of the V. cholerae Q
125 e positively regulated by the quorum-sensing autoinducer AI-2, which in turn activates a two-componen
131 hich is regulated by signal molecules called autoinducers (AIs) can protect V. cholerae against preda
132 actors (DSFs) are a family of quorum-sensing autoinducers (AIs) produced and detected by numerous gra
133 ibrio harveyi produces and responds to three autoinducers (AIs), and this sensory information converg
134 which extracellular signal molecules, called autoinducers (AIs), are released, accumulate, and are sy
139 nals that elicit new gene expression include autoinducers, amino acids, peptides, proteins, and carbo
140 etection of a diffusible signaling molecule (autoinducer) among a multicellular group, it is consider
141 nce leads to a tradeoff between accessing an autoinducer and accessing nutrients, which determines th
142 ioluminescent even after treatment with both autoinducer and aldehyde, substrate additions that typic
143 the permeability of the cell membrane to the autoinducer and the symmetry of autoinducer diffusion) w
145 ested for induction by a set of 33 synthetic autoinducers and analogues, and was most strongly induce
146 substrate analogues also limits synthesis of autoinducers and hence causes reduction in biofilm forma
147 sease has led to the elucidation of numerous autoinducers and their corresponding QS signaling pathwa
148 hi or other populations for members that use autoinducers and/or other mechanisms to limit colonizati
149 ranslocated to the nucleus in the absence of autoinducer, and truncated LasR-based proteins functione
150 mmunicate via the secretion and detection of autoinducers, and in V. cholerae, QS represses biofilm f
151 nhibitor (QSI) - a N-acyl homoserine lactone autoinducer antagonist - and then dosed onto healthy tes
153 lyses suggested that the observed effects of autoinducers are mediated in part through the quorum sen
159 ododecanoyl homoserine lactone (3OC(12)-HSL) autoinducer as a signaling molecule to coordinate the ex
160 to generate a cyclic lactone, that it is an autoinducer as well as a cross-inhibitor, and that all o
161 or that senses the concentration of secreted autoinducers as a proxy for bacterial cell density.
162 AttM) that hydrolyzes acylhomoserine lactone autoinducers, as well as two putative dehydrogenases (At
164 ention such that other previously identified autoinducers be reevaluated for additional biological fu
165 The deduced AvhR protein has characteristic autoinducer binding and DNA binding domains and is uniqu
174 nd bacteria were supplemented with exogenous autoinducers CAI-1 or AI-2 produced by recombinant strai
175 promote intraspecies communication, but one autoinducer, called AI-2, is produced and detected by a
176 d to measure Vibrio abundance, and the other autoinducer, called autoinducer-2 (AI-2), is widely prod
179 ired for synthesis of the biofilm dispersion autoinducer cis-2-decenoic acid in the human pathogen Ps
181 ex with the centrally important oligopeptide autoinducer competence and sporulation factor (CSF, also
188 brane to the autoinducer and the symmetry of autoinducer diffusion) we construct the solution of the
190 mproved by using enrichment media containing autoinducers either expressed from cloned synthase genes
194 acterium tumefaciens, there is no endogenous autoinducer for SdiA in E.coli: the E.coli genome does n
196 that phagocyte-derived oxidants target these autoinducers for inactivation as an innate defense mecha
202 cific information can be extracted from each autoinducer, how the autoinducers might drive distinct o
207 esigned to precisely translate extracellular autoinducer information into internal changes in gene ex
208 on reaching a threshold concentration, these autoinducers interact with transcription factors to regu
209 oretical model, cells synthesize and secrete autoinducers into the environment, up-regulate their pro
212 ation density increases, the accumulation of autoinducers leads to co-ordinated changes in gene expre
215 roteins were only activated by their cognate autoinducer ligand and not by N-butyryl-L-homoserine lac
217 s can enter mammalian cells and suggest that autoinducers may influence gene expression in host cells
218 On the basis of our findings, quorum sensing autoinducers merit further investigation as biomarkers f
219 be extracted from each autoinducer, how the autoinducers might drive distinct output behaviors, and,
220 hia coli Nissle 1917 (Nissle) to express the autoinducer molecule cholera autoinducer 1 (CAI-1) (show
226 ed in response to the concentration of small autoinducer molecules that are also released by the bact
229 orks as a coincidence detector in which both autoinducers must be present simultaneously for repressi
231 erium Vibrio harveyi exclusively detects the autoinducer N-((R)-3-hydroxybutanoyl)-L-homoserine lacto
233 ein SdiA of Escherichia coli and a candidate autoinducer N-octanoyl-L-homoserine lactone (C8-HSL) has
234 eudomonas aeruginosa, along with its cognate autoinducer, N-butyryl homoserine lactone (C(4)-HSL), re
236 These results indicate that TDA acts as an autoinducer of its own synthesis and suggest that roseob
237 N-(3-oxo-dodecanoyl) homoserine lactone, the autoinducer of the Pseudomonas aeruginosa LasI-LasR circ
239 endent of the lux promoter and unaffected by autoinducers or the level of lux expression, but the add
241 nce in Vibrio fischeri ES114 is activated by autoinducer pheromones, and this regulation serves as a
244 cally in the exponential stage (phase 2) for autoinducer production and the stationary stage (phase 3
245 of sigma 38 and dgt leads to a model for how autoinducer production is controlled under changing phys
246 Elucidating the mechanisms that control autoinducer production is, thus, pertinent to understand
249 ce of the native acylated homoserine lactone autoinducer, provided that they stabilize a closed confo
250 hat at high cell density (in the presence of autoinducers), quorum sensing represses TTS in V. harvey
252 oth environmental factors and quorum sensing autoinducers regulate the metabolism and/or processing o
256 Here we demonstrate that the Vibrio cholerae autoinducer (S)-3-hydroxytridecan-4-one, termed CAI-1, i
257 orum-sensing circuits, each consisting of an autoinducer-sensor pair, to control the expression of ge
258 nsing circuit of V. cholerae consists of two autoinducer/sensor systems, CAI-1/CqsS and AI-2/LuxPQ, a
260 acteria recognize two different forms of the autoinducer signal, both derived from 4,5-dihydroxy-2,3-
262 hat bacterial quorum sensing signals, called autoinducers, signal to eukaryotic cells, mimicking horm
267 f unique roles for the different V. cholerae autoinducers suggests that detection of kin fosters a di
269 e shown a heterogeneous promoter activity of autoinducer synthase genes, suggesting that some of the
271 nd we also found that ainS, which encodes an autoinducer synthase, mediates repression of luminescenc
272 was similar to members of the LuxI family of autoinducer synthases and was predicted to be the only a
276 ation also affects the synthesis of the AI-3 autoinducer that activates enterohemorrhagic Escherichia
277 ion of extracellular signal molecules called autoinducers that elicit population-wide changes in gene
279 ports indicate that the signaling molecules (autoinducers) that mediate QS in Pseudomonas aeruginosa
281 non-thermal plasma to modify and degrade AHL autoinducers thereby attenuating QS-dependent virulence
282 h their own production and the production of autoinducers, thereby establishing internal and external
283 marine bacterium, Vibrio harveyi, uses three autoinducers to achieve intra-species, intra-genera and
288 ous environmental factors and quorum sensing autoinducers to regulate the metabolism of various nucle
289 cluding Vibrio cholerae, the accumulation of autoinducers triggers repression of genes responsible fo
290 in the complex, together with the variety of autoinducer-type molecules that can apparently act as fo
294 nt groups of signalling molecules, including autoinducers, virulence factors and morphogenic substanc
295 gene rhlI and the production of the C(4)-HSL autoinducer were increased in the ptxR mutant, while the
297 nase that acts as the receptor for the CAI-1 autoinducer which is produced by the CqsA synthase.
298 ium and human pathogen secretes the S signal autoinducer, which cues degradation of intracellular c-d
299 e bacteria use acyl-homoserine lactone (AHL) autoinducers, which are detected by one of two receptor
300 rial community contained in extracellular QS autoinducers with the intracellular environmental inform