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1 H. jecorina Cel7A, cellobiohydrolase I, from glycoside h
2 H. naledi casts the fossil and archaeological records in
3 e characterized by both one-dimensional ((1) H, (13) C, (31) P) and two-dimensional (COSY, NOESY, DOS
8 combination of MS, isotope labeling, and (1)H and (13)C NMR techniques, we established that the majo
9 o measure these interactions through both (1)H nuclear Overhauser enhancement (NOE) and paramagnetic
10 ChB host systems, we also demonstrate, by (1)H NMR and DFT calculations, that the chalcogen atoms ori
11 s, we carried out metabolomic analysis by (1)H NMR spectroscopy of media from astrocyte-spinal neuron
13 MR setup showing one- and two-dimensional (1)H, (13)C and heteronuclear NMR experiments under continu
14 a 1.5-T hospital scanner has an effective (1)H polarization level of just 0.0005% this strategy shoul
15 ctions are validated against experimental (1)H NMR data, demonstrating that model-driven engineering
16 e delta1 methyl groups, which facilitated (1)H/(13)C methyl TROSY NMR measurements with opposing liga
17 PCR (A2AR) that are deuterated apart from (1)H/(13)C NMR probes at isoleucine delta1 methyl groups, w
18 the compounds were confirmed by MS, FTIR &(1)H NMR; and their properties were characterized by Temper
19 gate whether changes of (13)C/(12)C, (2)H/(1)H, and (15)N/(14)N ratios of NDMA give rise to isotope f
20 at low temperature and features a hydride (1)H NMR signal (in solution 35.61 ppm; in the solid state
24 ltidimensional single- and double-quantum (1)H solid-state NMR spectroscopy with density functional t
25 on of UV-vis absorption, resonance Raman, (1)H NMR, EPR, and X-ray absorption (near-edge) spectroscop
28 3,4-tetrahydroqui noline is reported, the (1)H and (13)C NMR data of which are in excellent agreement
29 chemical marker has been identified, the (1)H NMR chemometrics approach may contribute in the choice
30 e used to measure with high precision the (1)H(alpha)-(13)C(alpha) dipolar tensor and carboxylate che
31 m of conduction has been determined using (1)H and (7)Li solid-state nuclear magnetic resonance spect
35 andard addition of water is combined with (1)H magic angle spinning (MAS) NMR detection, absolute qua
36 erning formation of aggregates (1604cm(-1)), H-bonded parallel- and antiparallel-beta-sheets (1690cm(
37 3 orders of magnitude longer than that for 1-H, which decays via 1,5-HAT (tau1/2 = 48 s, DeltaH(doubl
38 (6) obtained from 4,4',5,5'-tetranitro-2H,2'H-3,3'-bipyrazole (4) by N-amination and N-azo coupling
39 ents, we measured hydrogen isotope (delta(2) H) values of metabolically inert feathers and metabolica
43 vestigate whether changes of (13)C/(12)C, (2)H/(1)H, and (15)N/(14)N ratios of NDMA give rise to isot
44 r thousand to +0.54 per thousand for delta(2)H, delta(13)C, and delta(37)Cl values, respectively.
45 onbulk(H)/epsilonbulk(C), where Deltadelta(2)H and Deltadelta(13)C are changes in isotope ratios duri
46 H isotope approach (LambdaC-H = Deltadelta(2)H/Deltadelta(13)C approximately epsilonbulk(H)/epsilonbu
47 nation it is shown that ions arising from (2)H-labeled tracers are completely differentiated from tho
48 tial scanning calorimetry, and sequential (2)H and (31)P solid-state nuclear magnetic resonance spect
49 were investigated by variable-temperature (2)H solid-state NMR spectroscopy to reveal the reorientati
51 or intramolecular cross-coupling of C(sp(2))-H and N-H bonds using N-iodosuccinimide (NIS) has been d
52 rtho-specific nitration of aromatic C(sp(2))-H bonds using chelation-assisted removable vicinal diami
53 re of the C-H bond being activated (C(sp(2))-H or C(sp(3))-H), the nature of the process involved (in
55 , hyperglycaemia significantly enhanced [(3) H]ryanodine binding and Ca(2+) /calmodulin-dependent pro
56 t dioxazolone amidating agents via C(sp(3) )-H bond activation to generate the desired amidated produ
57 for determining T cell responses (i.e., [(3)H]thymidine incorporation and the use of cell proliferat
60 he 9-aminoacridines increase the rate of [(3)H]prazosin dissociation from the alpha1A- and alpha1B-ad
62 ile not inhibiting DNA biosynthesis using (3)H-radiolabeled precursors in macromolecular synthesis in
63 en to be effective for accelerating C(sp(3))-H activation directed by weakly coordinating auxiliaries
64 es the advancements in Pd-catalyzed C(sp(3))-H activation via various redox manifolds, including Pd(0
65 port a silver-free Pd(II)-catalyzed C(sp(3))-H arylation of saturated bicyclic and tricyclic amine sc
66 to 48-70 h led to successive gamma-C(sp(3))-H arylation/intramolecular amidation and the constructio
68 bond being activated (C(sp(2))-H or C(sp(3))-H), the nature of the process involved (intramolecular w
69 clic ring-closing of Z-hexatriene, the [1,5]-H shift in Z-pentadiene, and the Cope rearrangement.
70 y)-6,7-dihydropyrimido[2,1-c][1,4]oxazin-4(9 H)-one (PF-06462894, 8), possessed favorable properties
71 omplex 2, while 3 itself is able to abstract H-atoms from weaker X-H bonds such as TEMPO-H to re-form
74 Three-dimensional structures for almost all H. jecorina cellulose-degrading enzymes are available, e
77 (2) AChRs respond strongly to ACh because an H-bond positions the QA to interact optimally with the r
78 ted fucosylation mechanism facilitated by an H-bonded network, which is corroborated by mutagenesis e
83 scriptionally active microbial community and H. pylori gene expression were determined using metatran
84 orometry were used to characterize Na(+) and H(+) transport, charge translocation, and thermal stabil
85 Validation of probe targets and "G" and "H" site specificity was carried out using a series of co
86 Here the authors show that in ants such as H. saltator, the 9-exon subfamily of odorant receptors (
93 XB hemispheres, geometrically rigidified by H-bonding to eight MeOH molecules and encapsulation of t
96 er fashion through photochemically induced C,H insertion reactions and consists of a protective layer
98 onstruct triaryl(heteroaryl)methanes via a C-H functionalization in good to excellent yield, and repr
99 ve been engineered to catalyze abiological C-H bond amination reactions, but the yields of these reac
100 explain the unique features of the aerobic C-H imidoylation of N-methoxybenzamides and have important
104 a Pd(II)-catalysed enantioselective alpha-C-H coupling of a wide range of amines, which include ethy
105 ionships between the functional groups and C-H bonds of a substrate has been exploited to achieve met
106 ropargylamines, such as A(3) couplings and C-H functionalization of alkynes, have been described and
108 heory indicate that differential pi-pi and C-H...pi interactions within a scaffold organized by multi
111 flow protocol has been developed for bond C-H activation which promotes the alpha-cyanation of secon
112 ected activation of carbon-hydrogen bonds (C-H) is important in the development of synthetically usef
114 es H2 under mild conditions, and catalyses C-H hydride abstraction plus H2 generation from a model su
115 and development for rhodium(III)-catalyzed C-H activation reactions has largely been limited to cyclo
117 itionally, many transition-metal-catalyzed C-H bond additions to polarized pi bonds occur within casc
120 to palladium and accelerates non-directed C-H functionalization with arene as the limiting reagent.
126 erein, we discovered a mild and metal-free C-H sulfenylation/intramolecular rearrangement cascade rea
127 three catalytic cycles to achieve hydridic C-H bond abstraction (enabled by polarity matching), alkyl
130 provide a "bottom-up" fundamental insight, C-H bond cleavage in methane over Ni-based catalysts was i
131 )methane at 20 K reveals an intermolecular C-H...H-C distance of only 1.566(5) A, which is the shorte
132 ty for insertion of the nitrene units into C-H bonds over reduction of the azides to the sulfonamides
136 classes of enantioselective silylations of C-H bonds have been reported recently, but little mechanis
137 low chemoselectivity for the amination of C-H bonds over competing reduction of the azide substrate
139 adical approaches, such as a facile remote C-H HAT step, with that of transition-metal-catalyzed chem
140 uld involve Ru-N covalent bond, the second C-H functionalization most likely involves Ru-O coordinate
141 s been exploited to achieve meta-selective C-H activation by using a covalently attached, U-shaped te
142 sed catalysis proceeds through five steps: C-H bond activation; C-C coupling via a concerted 1,2-aryl
143 olecular), and the context (stoichiometric C-H activation or within a variety of catalytic processes)
145 xperimental and theoretical studies of the C-H amination reaction mediated by the iron dipyrrinato co
147 hen surveyed in terms of the nature of the C-H bond being activated (C(sp(2))-H or C(sp(3))-H), the n
148 vage step is not rate-determining, but the C-H bond cleavage and C-Si bond-forming steps together inf
149 f I2 and TBHP as the green oxidant via the C-H bond cleavage of the benzylic carbon under mild reacti
150 Kinetic isotope effects indicated that the C-H bond cleavage step is not rate-determining, but the C-
151 Cp*RhCl to accelerate the cleavage of the C-H bond of N-pentafluorophenylbenzamides, providing a new
152 zontal lineO oriented perpendicular to the C-H bond of substrate) was found to lead to the S = 2 five
154 he direct functionalization of unactivated C-H bonds is ushering in a paradigm shift in the field of
158 eaction with fluorobenzene afforded the CAr -H bond activation product [1-F-2-IMe -C6 H4 ](+) I(-) (3
161 d CF2H groups and the important roles of CF2-H...O hydrogen bonds in influencing intermolecular inter
164 and 2-pyridone react with nitride complex [(H-PNP)RuN](+) (H-PNP = HN(CH2CH2P(t)Bu2)2) to generate o
166 r34 maintains solvent exclusion and the core H-bond network in the active site by relocating to repla
167 etrahydropyran moiety of (+)-cryptoconcatone H were assembled through catalytic asymmetric methodolog
168 sorption of water via the electron-deficient H atom and the subsequent dissociation of the electron-r
169 lial cells with wild-type and VacA-deficient H. pylori strains, treatment of cells with purified VacA
170 ) of the hydroalane adducts as well as DIBAL-H in its aggregation states support this experimental fi
171 rings, and weakly to Cho because a different H-bond tethers the ligand to misalign the QA and form we
172 sy specimens from individuals with different H. pylori infection statuses and premalignant tissue cha
175 )H/Deltadelta(13)C approximately epsilonbulk(H)/epsilonbulk(C), where Deltadelta(2)H and Deltadelta(1
176 unprecedented intermolecular aliphatic C-F...H-C interaction was observed in the X-ray crystal struct
177 tic variants in inhibitory complement factor H (CFH) are also features of both ARMD and TMA, we hypot
180 he nitrite reductase gene (aniA), the factor H-binding protein gene (fHbp), and the capsule biosynthe
181 gma-bond metathesis mechanism in which an Fe-H intermediate is postulated to be a key reactive specie
182 bulk CeO2, and identifies surface features, H(+) binding sites, Ce(3+) locations, and O vacancies on
183 LSSE), magnetocrystalline anisotropy field (H K) and surface perpendicular magnetic anisotropy field
191 more subtypes, including subtypes A1, F, G, H, J, and K and unclassified fragments, including one su
193 hane at 20 K reveals an intermolecular C-H...H-C distance of only 1.566(5) A, which is the shortest r
197 sequent dissociation of the electron-rich HO-H bond via H transfer to N on the nickel surface, benefi
199 unveil two novel mitochondrial effectors in H. pylori-host interaction with links on gastric pathoge
200 s of IL-17 family cytokines was performed in H. pylori-infected and uninfected gastric biopsy specime
203 described to do this at an adequate rate is H(+)-coupled lactate efflux on monocarboxylate transport
204 ontact (SC) ion-selective electrodes (ISEs) (H(+), K(+), and Na(+)) have outstanding performance char
205 A systematic structure search in the La-H and Y-H systems under pressure reveals some hydrogen-r
206 e dual-element C-H isotope approach (LambdaC-H = Deltadelta(2)H/Deltadelta(13)C approximately epsilon
207 ation) resulted in clearly different LambdaC-H values: 28 +/- 4 (oxidation), 0.7 +/- 0.1 and 0.9 +/-
209 tra- and intermolecular C horizontal lineO...H-N and C horizontal lineO...H2O hydrogen bonds, elucida
211 recognize known major antigenic sites in MeV-H, we identified a D4 genotype variant that escapes neut
212 lorectal cancer locally assessed as dMMR/MSI-H from 31 sites (academic centres and hospitals) in eigh
213 ontrol in pre-treated patients with dMMR/MSI-H metastatic colorectal cancer, and could be a new treat
214 less crowded Sn(II) hydride [Ar((i)Pr4)Sn(mu-H)]2 (Ar((i)Pr4) = C6H3-2,6(C6H3-2,6-(i)Pr2)2) (1b) reac
215 molecular cross-coupling of C(sp(2))-H and N-H bonds using N-iodosuccinimide (NIS) has been demonstra
217 re, we demonstrate the use of bench-stable N-H and N-alkyl oxaziridines derived from readily availabl
219 females had greater phosphorylation of Na(+)/H(+) exchanger isoform 3 (NHE3), distribution of NHE3 at
220 ily and a model system for all related Na(+)/H(+) exchangers, including eukaryotic representatives.
221 coli is the best studied member of the Na(+)/H(+) exchanger family and a model system for all related
223 ression of CtBP, or transfection with an NAD(H) insensitive CtBP, and are replicated by a synthetic p
228 nteraction on the water nanodroplet (SO2)O...H(H2O) may incur effects on the SO2 chemistry in atmosph
233 d direct method for the in situ detection of H. pylori remains a challenge, mainly due to the strong
238 s of CD8(+) T cells revealed the presence of H-2L(d)/AH1-specific T cells and an expansion of sequenc
246 yme known to catalyse the oxidation of NAD(P)H, is upregulated when p16 is inactivated by looking at
247 nd electron and ADP-ribosyl transfers (NAD(P)H/NAD(P)(+)) to drive metabolic transformations in and a
248 of steric selection and the presence of a P-H...pi interaction between the ligand and a conserved ar
249 is optimally done by interrogation of paired H chain V region (VH) and L chain V region (VL) sequence
250 elongation growth and play a key role in PM H(+)-ATPase activation by inhibiting PP2C.D family prote
251 -catalyzed proton transfer shows a prominent H/D kinetic isotope effect, which is determined to be 8.
252 reviewed for demographics, Hanifin & Rajka (H&R) and United Kingdom Working Party (UKWP) criteria.
254 lves O-O homolysis, where the phenol remains H-bonding to the peroxo OCu in the transition state (TS)
256 that the absence of Topoisomerase and RNase H activity in Escherichia coli or Saccharomyces cerevisi
260 ysis of R-loops in vivo, we develop an RNase-H-based approach; this reveals predominant R-loop format
261 react with nitride complex [(H-PNP)RuN](+) (H-PNP = HN(CH2CH2P(t)Bu2)2) to generate octahedral ammin
263 w that values of Tajima's D and Fay and Wu's H depend in a direct way on a peculiar measure of tree b
269 rophobic burial include shorter and stronger H-bonds, and increased entropy in the folded state.
270 l analysis of a prototypical Vbeta8.1(+) TCR-H-2D(b)-GAP5040-48 ternary complex revealed that germlin
272 species reacts with weak O-H bonds in TEMPO-H and 4-dimethylaminophenol ((NMe2)PhOH), the latter yie
273 and infection of a mouse model, we show that H. pylori deregulates mitochondria by two novel mechanis
279 31 in R411A-alpha2 is dynamic, reforming the H-bond between Y731 and Y730 to allow RT to propagate to
280 was examined by using RNA-seq to search the H. pylori transcriptome for RNAs whose 5'-phosphorylatio
281 h the redox state, hence suggesting that the H channel could play a more general role as a dielectric
282 he V LSSE peak at 75 K is attributed to the H KS and M S (saturation magnetization) whose peaks also
285 been confirmed independently by dating three H. naledi teeth with combined U-series and electron spin
287 ent evidence that susceptibility of trees to H. fraxineus is associated with their iridoid glycoside
288 tudied in view of its ability to form triply H-bonded complexes with a suitably complementary 2,6-dia
289 tains, at the same time, no less than twenty H-atoms available for either alpha- or beta-hydride elim
290 turally similar to more potent vacuolar-type H(+)-ATPase inhibitors, which all inhibited LGR5 interna
291 ls (ICs) express the proton pumping vacuolar H(+)-ATPase (V-ATPase) and are extensively involved in a
293 r cation channel SlTPC1 and the two vacuolar H(+)-pumps, SlAVP1 and SlVHA-A1, which in turn are revea
294 sociation of the electron-rich HO-H bond via H transfer to N on the nickel surface, beneficial to the
297 onsist of an atomic hydrogen sublattice with H-H distances of about 1.1 A, which are close to predict
298 We identified a centrin-binding site within H. sapiens Prp40 homolog A (HsPrp40A), which contains a
300 ystematic structure search in the La-H and Y-H systems under pressure reveals some hydrogen-rich stru
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