ライフサイエンスコーパス: sigma

1 e water/oil interfacial tension coefficient, sigma.

2 21 A) is correlated with surface roughness [sigma].

3 Narrow size distributions (sigma = 0.5-2%) are obtained whose spectral line widths

4 3E-10), and its effect on BDNF secretion was sigma 1 receptor (S1R) dependent.

5 The sigma 1 receptor (Sig1R) is a stress-activated chaperone

6 exhibit electrical conductivity values up to sigma = 1.4(7) x 10(-2) S/cm (Ea = 0.26(1) cm(-1)) and 1

7 was characteristic of the expected biradical sigma(1)ppi(1) spin configuration according to a combina

8 e needed for the antihyperalgesic effects of sigma-1 antagonism during inflammation.

9 Sigma-1 antagonism potentiates the antinociceptive effec

10 mune-driven peripheral opioid analgesia, and sigma-1 antagonism produces local opioid analgesia by en

11 We aimed to investigate whether sigma-1 antagonism reduces inflammatory pain through the

12 increase and the antihyperalgesic effects of sigma-1 antagonism were abolished by reducing the neutro

13 The selective sigma-1 antagonists BD-1063 and S1RA abolished mechanica

14 The opioid-dependent sigma-1 antihyperalgesic effects were preserved 5 d afte

15 To exploit RGC-protective sigma-1 receptor (S1R), we loaded unimNPs with an endoge

16 lodynia (MA) induced by direct activation of sigma-1 receptor (Sig-1).

17 The sigma-1 receptor (sigma1R) is a molecular chaperone, and

18 Methamphetamine also interacts with the sigma-1 receptor (sigma1R), an inter-organelle signaling

19 (11)C-Me-NB1 binding was independent of the sigma-1 receptor (Sigma1R), and the Sigma1R agonist (+)-

20 dosimetry in humans for the highly selective sigma-1 receptor PET agent (18)F-6-(3-fluoropropyl)-3-(2

21 evidence suggests that Sigma1 (also known as sigma-1 receptor) is a unique chaperone or scaffolding p

22 ccumulation of (18)F-FTC-146 was observed in sigma-1 receptor-dense organs such as the pancreas and s

23 antinociceptive effects of opioid drugs, so sigma-1 receptors constitute a biological brake to opioi

24 In conclusion, sigma-1 receptors curtail immune-driven peripheral opioi

25 Sigma-1-mediated antihyperalgesia was reversed by the op

26 This stabilization mode is equivalent to a sigma(2), pi-coordination of the butadiene ligand to the

27 y of MIN-101, a compound with affinities for sigma-2 and 5-HT2A receptors and no direct dopamine affi

28 of L chain gene activation is suggested as: sigma-2 followed by kappa, then sigma and lambda.

29 L chain isotypes, kappa, lambda, sigma, and sigma-2, encoded by 35 functional minigenes or clusters.

30 egulation of cagA expression from a specific sigma(28)-RNAP promoter and consequent induction of the

31 ng affinity to the sigma-factors (sigma(70), sigma(32) and sigma(38)) compared to that of the core en

32 the sigma-factors (sigma(70), sigma(32) and sigma(38)) compared to that of the core enzyme containin

33 s electrically conductive, with values up to sigma = 5.1(3) x 10(-4) S/cm with Ea = 0.34(1) eV.

34 In Vibrio species, at low cell density, the sigma 54-dependent response regulator LuxO is active and

35 abolishes the transcriptional activation of sigma(54) -dependent rpoS.

36 n of the sulfide-oxidizing genes, encoding a sigma(54) -dependent transcription factor (FisR) with th

37 highly sensitive to polysulfide, activating sigma(54) -dependent transcription of sulfide-oxidizing

38 anscription initiation, we characterized the sigma(54) AID by NMR spectroscopy and other biophysical

39 ADP-beryllium fluoride, we studied the NtrC1-sigma(54) AID complex using NMR spectroscopy.

40 it is an intrinsically disordered domain in sigma(54) alone.

41 a bacterial RNAP containing the alternative sigma(54) factor and cryoelectron microscopy, we determi

42 Our structures show how RNAP-sigma(54) interacts with promoter DNA to initiate the DN

43 gnificant conformational changes in RNAP and sigma(54) that promote RPo formation.

44 The alternative sigma factor 54 (sigma(54), RpoN), regulates many virulence-associated ge

45 he Thermus aquaticus RNAP/DNA complex, AsiA /sigma(70) Region 4, the N-terminal domain of MotA [MotA(

46 e, and use it to map contacts formed between sigma(70) RNAP holoenzyme from E. coli and the T7A1 prom

47 se in binding affinity to the sigma-factors (sigma(70), sigma(32) and sigma(38)) compared to that of

48 interacts specifically with the housekeeping sigma(70)-holoenzyme (Esigma(70)) and plays a key role i

49 a coli class I TAC containing a CAP dimer, a sigma(70)-RNA polymerase (RNAP) holoenzyme, a complete c

50 on of a complex with the major sigma factor (sigma(A)) and reaction with NO disassembles this complex

51 disposition of the N-terminal segment of Msm sigma(A), which may comprise an intrinsically disordered

52 een an aromatic pi donor orbital and the S-H sigma* acceptor orbital (a pi --> sigma* interaction).

53 pidly expanding field of ruthenium catalysed sigma-activation as a tool in the selective meta-C-H fun

54 roxide, monophosphoryl lipid A + AddaVax, or Sigma adjuvant system+CpG DNA, compared with mice infect

55 ry breaking that drives the formation of the sigma and A15 phases arises from minimization of local d

56 uggested as: sigma-2 followed by kappa, then sigma and lambda.

57 fourth is accessed through n(e)3p(e), n(e)3p(sigma), and sigma3p(sigma), while the fifth through sigm

58 xpress four L chain isotypes, kappa, lambda, sigma, and sigma-2, encoded by 35 functional minigenes o

59 gy to become stronger donors toward adjacent sigma- and pi-acceptors.

60 ly distinct from the widely known, bulk-like sigma- and pi-gaps.

61 These findings support SigG/SapG as a sigma/anti-sigma pair involved in repair of envelope dam

62 eloped a holistic, structure-based model for sigma appropriation using multiple experimentally determ

63 ch is far removed from AsiA or MotA, impairs sigma appropriation.

64 ns of Ni(II) model complexes to yield Ni(IV) sigma-aryl products.

65 , as a function of applied membrane tension, sigma-as an indirect assay for determining functional be

66 nd, and (iii) a Fermi level that lies in the sigma-band, allowing for a strong coupling with the C-C

67 ctants and evidenced surface tension values, sigma, below 40 mN m(-1), suspected to enhance the cloud

68 nd how the concerted scission of the central sigma bond is prevented in the boat conformation.

69 ystem of triplet O2, the weakness of the O-O sigma bond makes reactions of O2, which eventually lead

70 en site-pair that cleaves the C-H bond via a sigma bond metathesis reaction, during which the Co inse

71 Similarly, Co clusters also catalyze the sigma bond metathesis step, but much less effectively be

72 ludes the biomimetic and organometallic Fe-C sigma bond, which enables bidirectional activity reminis

73 es (four lone pairs) and features homoatomic sigma-bond heterolysis, thereby combining the key featur

74 also shown that on the Au(111) surface this sigma-bond metathesis can be combined with Glaser coupli

75 We propose a sigma-bond metathesis mechanism in which an Fe-H interme

76 erein, we disclose the first examples of the sigma-bond metathesis of silylated alkynes with aromatic

77 ly unsaturated metal centres at the SBUs via sigma-bond metathesis pathways and as a result of the st

78 uggest that borylation occurs via successive sigma-bond metathesis steps, whereby a Pt(II) -H interme

79 ism proceeding by hydrocupration followed by sigma-bond metathesis with a hydrosilane.

80 lectron transfer, halogen atom transfer, and sigma-bond methatesis.

81 1a, and the CO2 insertion into the alpha-C-H sigma-bond of amine 1a.

82 irectly exploit the polarized reverse-dative sigma-bond of metal-borane complexes (i.e., M-->BR3 ) re

83 r/intramolecular construction of two/one C-C sigma-bond(s).

84 igma-hole is located on the extension of the sigma-bond, in the hypervalent species our DFT calculati

85 lated by a combination of sigma hole and n-->sigma* bonding contributions with retention of the octet

86 ma* orbital of E-X as emphasized in the 'n-->sigma*' bonding model.

87 Y and La and 4f(3) Nd congeners only MIC-->M sigma-bonding is found.

88 e between chromophores, since rotation about sigma bonds negligibly affects the orbital overlap withi

89 pounds with up to four rotationally hindered sigma bonds, for which a single stereoisomer out of seve

90 volves in the intramolecular cleavage of two sigma-bonds (C-O and C-C) and inter/intramolecular const

91 The angles between the three sigma-bonds of the carbon sp(2) orbitals are roughly 120

92 Instead, the key n(X-Y)-->sigma*C-F interactions (X,Y = O,N) in the "alpha-systems

93 eterocyclohexane frame) are weaker than nX-->sigma*C-F interactions in "normal" systems.

94 dominant role of symmetry-breaking nO((pi))-sigma*CC interactions between the p-type lone pair of th

95 conjugative stabilization through sigmaCC -->sigma*CF interactions are the underlying driving force f

96 gma), while the fifth through sigma3p(e) and sigma(CH)sigma* states.

97 ane molecularly adsorbed as a strongly bound sigma complex on IrO2(110) and that a large fraction of

98 -H arrangement, whereas for the analogous Pd sigma-complex of the five-membered lactone the smallest

99 of the activation process, from a eta(2)-H,H sigma-complex showing little Ga-H bond activation, throu

100 C donor-acceptor bond, composed of a MIC-->U sigma-component and a U(5f)-->MIC(2p) pi-back-bond, but

101 conductance properties of pi-conjugated and sigma-conjugated systems have been well-studied, little

102 ound between the measured values and Hammett sigma constants.

103 e to control and adjust the membrane tension sigma covering a broad regime.

104 ing the ImageStream((R)) platform (Millipore Sigma, Darmstadt, Germany), and confocal images of an in

105 we could demonstrate that they arise from n-sigma* delocalization, not from an inductive effect.

106 he strong magnetic field regime, we find a 7-sigma discrepancy compared with the theoretical predicti

107 that this protection is mediated by the anti-sigma domain of CrsR.

108 nes (CAACs) are among the most nucleophilic (sigma donating) and also electrophilic (pi-accepting) st

109 o)carbenes (BICAACs), which feature enhanced sigma-donating and pi-accepting properties compared to m

110 e pi-donating N-heterocyclic imino (NHI) and sigma-donating silyl groups as key factors for their enh

111 This method allows separation of the sigma-donation and pi-acceptor interactions of the ligan

112 exes leads to the conclusion that increasing sigma-donation by X also disfavors oxidative addition of

113 no) carbene (cAAC) is regarded as a stronger sigma-donor and a better pi-acceptor when compared with

114 azol-5-ylidene)), and show that the superior sigma-donor and pi-acceptor electron properties of the l

115 ylimido ligand is both a better pi-donor and sigma-donor, forming stronger and shorter metal-nitrogen

116 When the 3-substituent is a sigma-donor, the ground state is destabilized, and the r

117 on donor to stabilize the aminyl radical and sigma-electron acceptor to destabilize the aminyl radica

118 roscopy and DFT calculations reveals similar sigma-electron-releasing abilities for all of them; howe

119 with six delocalized pi and six delocalized sigma electrons and should exist for a series of lanthan

120 romatic AuSb4 fragments with six delocalized sigma electrons each (n=1).

121 re formation and exhibit increased levels of sigma(F) -directed gene transcription.

122 reate a negative feedback loop that inhibits sigma(F) -directed gene transcription.

123 polymerase, and instead functions to inhibit sigma(F) by competing for binding to the beta' coiled-co

124 m to investigate the activation of Spo0A and sigma(F) in individual cells held under constant, sporul

125 s of nutrient limitation; (ii) activation of sigma(F) is tightly correlated with, and preceded by, Sp

126 pal conclusions were that: (i) activation of sigma(F) occurs with an approximately constant probabili

127 the control of the sporulation sigma factor sigma(F) to create a negative feedback loop that inhibit

128 nce is presented that the binding of Fin and sigma(F) to RNA polymerase is mutually exclusive.

129 on of the cell-specific transcription factor sigma(F), a hallmark for entry into sporulation.

130 Additionally, a sigma factor (SigL) and global regulators (CcpA, CodY, a

131 ed for formation of a complex with the major sigma factor (sigma(A)) and reaction with NO disassemble

132 The alternative sigma factor 54 (sigma(54), RpoN), regulates many virule

133 otein, PhyR, which functions as an anti-anti-sigma factor and regulates transcription of genes requir

134 a sequence-specific interactions between the sigma factor and the promoter DNA while moving downstrea

135 by a mechanism distinct from that of classic sigma factor antagonists (anti-sigma factors), which bin

136 f transcription was positively influenced by sigma factor B.

137 n, crtOPQMN, but is epistatic to alternative sigma factor B.

138 This induction is, in part, dependent on sigma factor E.

139 0 degrees C by overexpressing the heat shock sigma factor encoded by the rpoH gene.

140 of cell motility through the control of FliA sigma factor expression.

141 PbifA promoter is dependent on the flagellar sigma factor FliA, and positively regulated by ppGpp and

142 of sigX, encoding the only known alternative sigma factor in streptococci.

143 The sigma factor is a functionally obligatory subunit of the

144 loroplast transcription in photoreceptor and sigma factor mutants under controlled light regimes in A

145 s governed by an alternative transcriptional sigma factor named sigma(S) (RpoS) that associates with

146 othesized to encode an ECF sigma factor/anti-sigma factor pair.

147 The alternative sigma factor RpoS is critical for natural transformation

148 alling was found to interact with the stress sigma factor RpoS.

149 stress, partly through stabilization of the sigma factor RpoS.

150 its anti-sigma factor RsbW and the anti-anti-sigma factor RsbV plays a critical role in shaping the n

151 y of the synthesis rates of sigmaB, its anti-sigma factor RsbW and the anti-anti-sigma factor RsbV pl

152 the proteins purified, the SigT cognate anti-sigma factor RstA ranked the top with the most total ind

153 Transcripts encoding the sigma factor SIG5 are regulated by light and the circadi

154 roduced under the control of the sporulation sigma factor sigma(F) to create a negative feedback loop

155 Using a sigma factor SigT from S. coelicolor as a model, we succ

156 ma factors), which bind directly to a target sigma factor to prevent its association with RNA polymer

157 concerning the light environment by a single sigma factor to regulate chloroplast transcription.

158 gative regulator of RpoE that sequesters the sigma factor to regulate gene expression based on condit

159 RpoE is a sigma factor which, in other bacteria, responds to oxida

160 nsically disordered region (IDR) of the anti-sigma factor, NepR, by solution NMR spectroscopy.

161 One alternative sigma factor, sigma(N), is unique in its structure and f

162 ation and dissociation of the RNA polymerase sigma factor.

163 nctiforme were hypothesized to encode an ECF sigma factor/anti-sigma factor pair.

164 flexible native omega plays a direct role in sigma-factor recruitment.

165 out displacement of the promoter recognition sigma-factor.

166 Domain 1.1 of primary sigma factors (sigma1.1) prevents their binding to promo

167 The RseA and RshA anti-sigma factors and the Zur and NrdR repressors were ident

168 The bacterial sigma factors confer promoter specificity to the RNA pol

169 alignments of CsrR orthologs and other anti-sigma factors identified a CsrR-specific region characte

170 The coiled-coil is a docking site for sigma factors on RNA polymerase, and evidence is present

171 Bacterial RNA polymerase (RNAP) requires sigma factors to recognize promoter sequences.

172 at of classic sigma factor antagonists (anti-sigma factors), which bind directly to a target sigma fa

173 romoters, recognized by RpoN, RpoD, and RpoS sigma factors, respectively.

174 egion characteristic of a new family of anti-sigma factors.

175 d by a cascade of alternative RNA polymerase sigma factors.

176 showed a decrease in binding affinity to the sigma-factors (sigma(70), sigma(32) and sigma(38)) compa

177 cription requires recognition of appropriate sigma-factors by the core enzyme (core2: alpha2betabeta'

178 ce of unstructured omega, the association of sigma-factors to the core is less efficient, suggesting

179 ion of genes for the nuclear encoded plastid sigma-factors, SIG1-6, which code for components of the

180 tive structural transformation in a SrCoO2.5-sigma film by scanning transmission electron microscopy.

181 uent structural reconstruction in a SrCoO2.5-sigma film in the presence of an electric field.

182 strongly electron-withdrawing substituents (sigma > 0.43).

183 in one big tent, related by a combination of sigma hole and n-->sigma* bonding contributions with ret

184 Whether the sigma hole or n-->sigma* model applies, any octet expans

185 ctrostatic contribution is reflected in the 'sigma hole' model in which a positive patch on E attract

186 The SAPT analysis shows that the sigma-hole bond between the lambda(3)-iodane and the nuc

187 In halogen compounds, sigma-hole interaction was identified as a force in crys

188 and physicochemical origins of this class of sigma-hole interaction.

189 More recently, sigma-hole interactions were also shown to affect the re

190 re very weakly covalent and can be viewed as sigma-hole interactions, similar to those encountered in

191 such complexes can be described by means of sigma-hole interactions.

192 to their monovalent counterparts, where the sigma-hole is located on the extension of the sigma-bond

193 The halogen bond formed between the sigma-hole on bromobenzene (BrPh) and the lone pair(s) o

194 tions reveal the formation of a nonclassical sigma-hole region with one or even two maxima.

195 imit, the tuning transforms the nonclassical sigma-hole regions into coordination sites, which allows

196 eal to bind anions in the focal point of the sigma holes on the cofacial endocyclic sulfur atoms.

197 The sigma-holes are binding sites for Lewis bases, and bindi

198 hat the shape, location, and strength of the sigma-holes can be tuned by the choice of ligands and me

199 The density of sigma-holes can explain the increasing catalytic activit

200 t heavy chalcogen atoms contain Lewis acidic sigma-holes which are able to form attractive supramolec

201 e sites is a consequence of the formation of sigma-holes, i.e., maxima in the surface electrostatic p

202 sp(2)O-amide sp(2)N interactions (proposed n-sigma* hydrogen bond) and amide sp(2)O-aromatic sp(2)C (

203 ecreases; consequently, the resolution (mean/sigma) improves by a factor equal to the square root of

204 nd the S-H sigma* acceptor orbital (a pi --> sigma* interaction).

205 T/kappa, where S is the Seebeck coefficient, sigma is the electrical conductivity, kappa is the total

206 the interaction but not for cleavage of Pro-sigma(K) Chemical cross-linking and mass spectrometry of

207 etween ATP binding by the CBS domain and Pro-sigma(K) cleavage by the membrane domain.

208 ectrometry of purified, inactive SpoIVFB-Pro-sigma(K) complex indicated residues of the two proteins

209 s subtilis IP SpoIVFB with its substrate Pro-sigma(K) depends on particular residues in the interdoma

210 brane domain of SpoIVFB, and the rest of Pro-sigma(K) interacts extensively with the linker and the C

211 In the model, the Proregion of Pro-sigma(K) loops into the membrane domain of SpoIVFB, and

212 NMNAT2-MSD platform allowed us to screen the Sigma LOPAC library consisting of 1280 compounds.

213 ment plethysmography (ADP) and the lambda-mu-sigma method for percentile estimation.

214 Whether the sigma hole or n-->sigma* model applies, any octet expansion is now seen as

215 .4-A resolution X-ray crystal structure of a sigma(N) fragment in complex with its cognate promoter D

216 domain interface are crucial for the role of sigma(N) in blocking transcription activity and in maint

217 als a conserved interdomain interface within sigma(N) that, when disrupted by mutations, leads to tra

218 molecular details of promoter recognition by sigma(N) The structure allowed us to build and refine an

219 One alternative sigma factor, sigma(N), is unique in its structure and functional mech

220 e allowed us to build and refine an improved sigma(N)-holoenzyme model based on previously published

221 The improved sigma(N)-holoenzyme model reveals a conserved interdomai

222 in maintaining the activator sensitivity of sigma(N).

223 lated isomers experiencing or not the nN --> sigma*N-H electron delocalization.

224 ries than one has imagined, some ligands are sigma-noninnocent.

225 lumn were sufficient to achieve a precision (sigma) of 0.1 mUr (1 milliurey = 0.001 = 1 per thousand)

226 The standard deviations (sigma) of the pulse amplitude distributions decrease by

227 this points to dissociative OS-SET (SET to a sigma* orbital concerted with C-Cl breakage) in alkanes

228 onding interactions being dominated by n --> sigma* orbital delocalization between a lone pair (n) of

229 y); (b) electrophilic (2e(-)) attack via the sigma* orbital of a mu-eta(2):eta(2)-peroxo-diiron(III)

230 ) of a (thio)amide donor and the antibonding sigma* orbital of an acceptor thiophene or selenophene.

231 sfer between the lone pair (n) of Y, and the sigma* orbital of E-X as emphasized in the 'n-->sigma*'

232 valence s-orbitals when forming the bonding sigma-orbitals.

233 e findings support SigG/SapG as a sigma/anti-sigma pair involved in repair of envelope damage resulti

234 igmaQ*, analogous to the traditional Hammett sigma parameter.

235 hree potential pathways: quintet and triplet sigma-pathways ((5)Hsigma and (3)Hsigma) that possess li

236 ses the barriers for the quintet and triplet sigma-pathways and quenches any chances for two-state re

237 nisotropic electrical conductivity (sigma|| /sigma perpendicular ) in the order of 10(11) , and aniso

238 ry lyotropic liquid crystalline Frank-Kasper sigma phase.

239 The times required to form the DDQC and sigma phases are strongly temperature dependent, requiri

240 le reaction with phenylacetylene affords the sigma,pi-activated phenylacetylide complex 5.

241 egarding the conductance properties of mixed sigma-pi backbone wires and the factors that control the

242 We synthesize a sigma-pi hybrid donor-acceptor polymer by catalytic hydr

243 ich is proposed to be a result of a rapid pi-sigma-pi interconversion between the intermediates allow

244 EEG spectral power in the delta, theta, and sigma ranges.

245 ine release and basal efflux is dependent on sigma receptor activation.

246 ues were synthesized and optimized for their sigma receptor affinity and selectivity.

247 Unilateral injections of the sigma receptor antagonist BD-1063 prior to METH administ

248 Altogether, these findings show that the sigma receptor has a key role in METH dysregulation of d

249 ggest that interactions between METH and the sigma receptor lead to oxidative species (most likely su

250 For the first time, a combination of sigma receptor moieties and a NO photodonor is reported,

251 e NO under visible light and possess overall sigma receptor nanomolar affinity, with one of them (8b)

252 One promising target of METH is the sigma receptor, a chaperone protein located on the membr

253 ], have been identified as new potent sigma (sigma) receptor ligands.

254 vel hybrid compounds that conjugate a sigma (sigma) receptor pharmacophore and a nitric oxide (NO) ph

255 METH-induced activation of sigma receptors results in oxidation of a cysteine resid

256 ling behavior, indicating the involvement of sigma receptors.

257 glass at the 2sigma uncertainty level (where sigma represents the standard deviation).

258 dance proteins, protein tyrosine phosphatase sigma (RPTPsigma), and Nogo receptors 1-3 (NgR1-3).

259 ee-center-two-electron (3c2e) donor-acceptor sigma(Ru-H) --> Al interaction.

260 and the hybrid or modified PCR-based method (Sigma/Rubicon Genomics Inc.

261 -Co composites for characterization of their sigma s and H ci.

262 lytical model to estimate the magnetization (sigma s) and intrinsic coercivity (H ci) of a hard/soft

263 ternative transcriptional sigma factor named sigma(S) (RpoS) that associates with RNA polymerase and

264 act mechanism by which CrsR and CrsA control sigma(S) activity is not completely unveiled.

265 se and thus enables rapid gene activation by sigma(S) as soon as the cells enter early stationary pha

266 lts suggest that CsrR-mediated protection of sigma(S) during exponential growth enables rapid adaptat

267 n, we show that CrsR sequesters and protects sigma(S) during the exponential growth phase and thus en

268 The structures show the 3D topology of the sigma(S) factor and how it recognizes the promoter DNA,

269 eported that posttranslational regulation of sigma(S) in the aquatic bacterium Shewanella oneidensis

270 )-MR204], have been identified as new potent sigma (sigma) receptor ligands.

271 n of novel hybrid compounds that conjugate a sigma (sigma) receptor pharmacophore and a nitric oxide

272 rdinary anisotropic electrical conductivity (sigma|| /sigma perpendicular ) in the order of 10(11) ,

273 As an example, three distinct D-versus-sigma "signatures" are calculated, corresponding to gati

274 NREM alpha and sigma spectral power correlations with intelligence did

275 le the fifth through sigma3p(e) and sigma(CH)sigma* states.

276 -pentapeptide, is inhibited by region 3.2 of sigma subunit, possibly preventing targeting of RNA to t

277 astid transcription involves nuclear-encoded sigma subunits of plastid-encoded plastid RNA polymerase

278 was granted by electrophilic fluorination of sigma-sydnone Pd(II) precursors in the presence of Selec

279 y is defined by the figure of merit ZT=(S(2) sigma) T/kappa, where S is the Seebeck coefficient, sigm

280 ons by the preferential alignment of the S-H sigma* toward the ring carbons and an aromatic pi orbita

281 ated by the pyrazine bridging ligands, via a sigma-type interaction.

282 that of UFG-2 steel (sigma y = 1080 MPa and sigma UTS = 1200 MPa), suggesting that the strengthening

283 of 1260 MPa, and ultimate tensile strength (sigma UTS) of 1400 MPa.

284 S(2) sigma values are 8-fold higher than equivalent materials

285 sigma(+) values for these three triazoles have also been

286 ituted methylenecyclopropanes correlate with sigma(+) values.

287 0) on one or both rings, with the individual sigma-values being additive in nature.

288 formation events occur in environments with sigma w > 0.8 m s(-1).

289 The standard deviation in W, sigma w , varies widely over the globe with the highest

290 suggest that the correct parameterization of sigma w is critical to simulate realistic cirrus propert

291 Globally about 90% of the simulated sigma w values are below 0.1 m s(-1) and about one in 10

292 cial monoclonal IgE antibody, SPE-7 IgE from Sigma, was found to possess the radically anomalous prop

293 ect was analyzed using the Hammett constant (sigma), which has positive values for electron-withdrawi

294 hrough n(e)3p(e), n(e)3p(sigma), and sigma3p(sigma), while the fifth through sigma3p(e) and sigma(CH)

295 gand, X, were correlated with the resulting (sigma(X), pi(X)) parameter set.

296 e valence electron lone pair donors, and the sigma*Xe-O orbitals are lone pair acceptors.

297 values are higher than that of UFG-2 steel (sigma y = 1080 MPa and sigma UTS = 1200 MPa), suggesting

298 ed that UFG-1 steel had high yield strength (sigma y) of 1260 MPa, and ultimate tensile strength (sig

299 The sigma (z) sigma (z) interaction tunes the amount of coherence in t

300 The sigma (z) sigma (z) interaction tunes the amount of cohe