Увійти

Готові списки джерел за темами / Dissociation rate constant / Статті в журналах

Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Dissociation rate constant.

Статті в журналах з теми "Dissociation rate constant"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Ознайомтеся з топ-50 статей у журналах для дослідження на тему "Dissociation rate constant".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Переглядайте статті в журналах для різних дисциплін та оформлюйте правильно вашу бібліографію.

1

Björk, I., E. Pol, E. Raub-Segall, M. Abrahamson, A. D. Rowan, and J. S. Mort. "Differential changes in the association and dissociation rate constants for binding of cystatins to target proteinases occurring on N-terminal truncation of the inhibitors indicate that the interaction mechanism varies with different enzymes." Biochemical Journal 299, no. 1 (1994): 219–25. http://dx.doi.org/10.1042/bj2990219.

Повний текст джерела

Анотація:

The importance of the N-terminal region of human cystatin C or chicken cystatin for the kinetics of interactions of the inhibitors with four cysteine proteinases was characterized. The association rate constants for the binding of recombinant human cystatin C to papain, ficin, actinidin and recombinant rat cathepsin B were 1.1 x 10(7), 7.0 x 10(6), 2.4 x 10(6) and 1.4 x 10(6) M-1.s-1, whereas the corresponding dissociation rate constants were 1.3 x 10(-7), 9.2 x 10(-6), 4.6 x 10(-2) and 3.5 x 10(-4) s-1. N-Terminal truncation of the first ten residues of the inhibitor negligibly affected the a

Стилі APA, Harvard, Vancouver, ISO та ін.

2

A. Efhema1, Anud M. "RATE CONSTANT OF SOME AMINO DERIVATIVES DISSOCIATION." iraq journal of market research and consumer protection 13, no. 1 (2021): 148–66. http://dx.doi.org/10.28936/jmracpc13.1.2021.(15).

Повний текст джерела

Анотація:

Amino glycoside derivation including, Neomycin, Streptomycin, Kanamycin and Gentamycin with special reagents, which are benzoylchloride; benzene sulfonyl chloride and phthalic anhydride were made to enhance Uv-detectability for HPLC analysis. But there are many problems facing pre column derivation and in order to solve this, the conductivity of antibiotic derivatives were used to calculate the dissociation constant and the hydrolysis rate which determined concern type reaction. In addition the characteristics those controlling the hydrolysis of antibiotic-derivatives were investigated.

Стилі APA, Harvard, Vancouver, ISO та ін.

3

Littlejohn, David, Abigail R. Wizansky, and S. G. Chang. "The dissociation constant and acid hydrolysis rate of hydroxysulfamic acid." Canadian Journal of Chemistry 67, no. 10 (1989): 1596–98. http://dx.doi.org/10.1139/v89-243.

Повний текст джерела

Анотація:

The acid dissociation constant and hydrolysis rate of hydroxysulfamic acid (HSA) in acid aqueous solutions have been studied. The acid dissociation constant was determined to be K = 1.5 ± 0.5 M at 298 K. The hydrolysis rate, R, was found to be R = k[H+][HSA], where k = 6.2 × 1012 exp (−26 300/RT) M−1 s−1 at (μ = 1.0 M and [HSA] is the concentration of all forms of hydroxysulfamic acid. Keywords: hydroxysulfamic acid, hydrolysis, acid dissociation.

Стилі APA, Harvard, Vancouver, ISO та ін.

4

Ikechukwu, I. Udema. "Derivation of steady-state first-order rate constant equations for enzyme-substrate complex dissociation, as well as zero-order rate constant equations in relation to background assumptions." GSC Biological and Pharmaceutical Sciences 21, no. 3 (2022): 175–89. https://doi.org/10.5281/zenodo.7654125.

Повний текст джерела

Анотація:

The maximum velocity (<em>V</em><sub>max</sub>) of catalysis and the substrate concentration ([<em>S</em><sub>T</sub>]) at half the <em>V</em><sub>max</sub>, the <em>K</em><sub>M</sub><em>,</em> are regarded as steady-state (SS) parameters even though they are the outcomes of zero-order kinetics (ZOK). The research was aimed at disputing such a claim with the following objectives: To: 1) carry out an overview of issues pertaining to the validity of assumptions; 2) derive the needed steady-state (SS) equations distinct from Michaelian equations that can be fitted to both experime

Стилі APA, Harvard, Vancouver, ISO та ін.

5

Piran, Uri, and William J. Riordan. "Dissociation rate constant of the biotin-streptavidin complex." Journal of Immunological Methods 133, no. 1 (1990): 141–43. http://dx.doi.org/10.1016/0022-1759(90)90328-s.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

6

Pace, Tamara C. S., та Cornelia Bohne. "Temperature effects on xanthone–β-cyclodextrin binding dynamics". Canadian Journal of Chemistry 89, № 3 (2011): 395–401. http://dx.doi.org/10.1139/v10-140.

Повний текст джерела

Анотація:

The complexation dynamics of the triplet excited state of xanthone with β-cyclodextrin were studied at various temperatures between 10 and 50 °C. Association and dissociation rate constants were determined using the laser flash photolysis quenching methodology with Cu2+ as a quencher. The rate constants for the association and dissociation of triplet xanthone with β-cyclodextrin increased with temperature, while the equilibrium constant for the triplet excited state remained relatively constant. Equilibrium constants for the ground-state complexation of xanthone with β-cyclodextrin were determ

Стилі APA, Harvard, Vancouver, ISO та ін.

7

Bevan, A. P., J. R. Christensen, J. Tikerpae, and G. D. Smith. "Chloroquine augments the binding of insulin to its receptor." Biochemical Journal 311, no. 3 (1995): 787–95. http://dx.doi.org/10.1042/bj3110787.

Повний текст джерела

Анотація:

The effect of chloroquine on the interaction of insulin with its receptor has been investigated under both equilibrium and non-equilibrium conditions. Chloroquine was found to augment insulin binding in a pH-dependent manner between pH 6.0 and pH 8.5, with the maximum occurring at approximately pH 7.0. Analysis of the equilibrium binding data in terms of independent binding sites gave equivocal results but suggested an increase in the high-affinity component. Analysis using the negative co-operativity binding model of De Meyts, Bianco and Roth [J. Biol. Chem. (1976) 251, 1877-1888] suggested t

Стилі APA, Harvard, Vancouver, ISO та ін.

8

Bao, Junwei Lucas, Xin Zhang, and Donald G. Truhlar. "Barrierless association of CF2and dissociation of C2F4by variational transition-state theory and system-specific quantum Rice–Ramsperger–Kassel theory." Proceedings of the National Academy of Sciences 113, no. 48 (2016): 13606–11. http://dx.doi.org/10.1073/pnas.1616208113.

Повний текст джерела

Анотація:

Bond dissociation is a fundamental chemical reaction, and the first principles modeling of the kinetics of dissociation reactions with a monotonically increasing potential energy along the dissociation coordinate presents a challenge not only for modern electronic structure methods but also for kinetics theory. In this work, we use multifaceted variable-reaction-coordinate variational transition-state theory (VRC-VTST) to compute the high-pressure limit dissociation rate constant of tetrafluoroethylene (C2F4), in which the potential energies are computed by direct dynamics with the M08-HX exch

Стилі APA, Harvard, Vancouver, ISO та ін.

9

Maximova, Ekaterina, Eugene B. Postnikov, Anastasia I. Lavrova, Vladimir Farafonov, and Dmitry Nerukh. "Protein–Ligand Dissociation Rate Constant from All-Atom Simulation." Journal of Physical Chemistry Letters 12, no. 43 (2021): 10631–36. http://dx.doi.org/10.1021/acs.jpclett.1c02952.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

10

G., Venkateswarlu, and S. R. Krishna Rao G. "Kinetics of the dissociation of tris(2,2'-bipyridyl)iron(II) and tris(1,10-phenanthroline)iron(II) in the reverse micelles of Tween-85 in cyclohexane." Journal of Indian Chemical Society Vol. 86, Aug 2009 (2009): 822–25. https://doi.org/10.5281/zenodo.5814846.

Повний текст джерела

Анотація:

Department of Chemistry. S.R.V.B.S.J B.M.R. College. Peddapuram-533 437, East Godavari District, Andhra Pradesh, India <em>Manuscprit received 28 January 2009, revised 31 March 2009, accepted 27 April 2009</em> Dissociation of the aqueous complexes of tris(2,2<em>'-</em>bipyridyl) and tris(1,10-phenanthroline)iron(II) takes place with appreciable rate in the presence of reverse micelles of Tween-85 in cyclohexane-water mixtures. The rate of dissociation increases with increase in the concentration of Tween-85 at constant W ( = [Water]/[Tween-85]) and decreases with increase in W at constan

Стилі APA, Harvard, Vancouver, ISO та ін.

11

Raines, Douglas E., and Vinu T. Zachariah. "Isoflurane Increases the Apparent Agonist Affinity of the Nicotinic Acetylcholine Receptor by Reducing the Microscopic Agonist Dissociation Constant." Anesthesiology 92, no. 3 (2000): 775–85. http://dx.doi.org/10.1097/00000542-200003000-00021.

Повний текст джерела

Анотація:

Background Isoflurane increases the apparent agonist affinity of ligand-gated ion channels. This action reflects a reduction in the receptor's agonist dissociation constant and/or the preopen/open channel state equilibrium. To evaluate the effect of isoflurane on each of these kinetic constants in the nicotinic acetylcholine receptor, the authors analyzed isoflurane's actions on (1) the binding of the fluorescent agonist Dns-C6-Cho to the nicotinic acetylcholine receptor's agonist self-inhibition site and (2) the desensitization kinetics induced by the binding of the weak partial agonist suber

Стилі APA, Harvard, Vancouver, ISO та ін.

12

Sherriff, Nick, Ragiab Issa, Katherine Morris, Francis Livens, Sarah Heath, and Nick Bryan. "Reversibility in radionuclide/bentonite bulk and colloidal ternary systems." Mineralogical Magazine 79, no. 6 (2015): 1307–15. http://dx.doi.org/10.1180/minmag.2015.079.06.

Повний текст джерела

Анотація:

AbstractTernary systems of 152Eu(III), bulk bentonite and ethylenediaminetetraacetic acid (EDTA) ([Eu] = 7.9 × 10–10 M; pH = 6.0–7.0) have been studied. Without EDTA, there was slow uptake in a two-stage process, with initial rapid sorption of Eu(III) (96%), followed by slower uptake of a much smaller fraction (3.0% over a period of one month). The reversibility of Eu(III) binding was tested by allowing Eu(III) to sorb to bentonite for 1–322 days. EDTA was added to the pre-equilibrated Eu bentonite systems at 0.01 M, a concentration that was sufficient to suppress sorption in a system where ED

Стилі APA, Harvard, Vancouver, ISO та ін.

13

He, Wei, Cheng Wang, Qichuan Zhang, et al. "Theoretical Kinetic Study of Thermal Decomposition of 5-Methyl-2-ethylfuran." Molecules 30, no. 7 (2025): 1595. https://doi.org/10.3390/molecules30071595.

Повний текст джерела

Анотація:

With the advancement of new synthetic techniques, 5-Methyl-2-ethylfuran (5-MEF) has emerged as a promising renewable biofuel. In this study, the potential energy surfaces for the unimolecular dissociation reaction, H-addition reaction, and H-abstraction reaction of 5-MEF were mapped at the CBS-QB3 level. The temperature- and pressure-dependent rate constants for these reactions on the potential energy surfaces were determined by solving the master equation, using both transition state theory and Rice–Ramsperger–Kassel–Marcus theory. The results showed that the dissociation reaction of the C(6)

Стилі APA, Harvard, Vancouver, ISO та ін.

14

Zhu, Yongling, and Anthony Auerbach. "Na+ Occupancy and Mg2+ Block of the N-Methyl-d-Aspartate Receptor Channel." Journal of General Physiology 117, no. 3 (2001): 275–86. http://dx.doi.org/10.1085/jgp.117.3.275.

Повний текст джерела

Анотація:

The effect of extracellular and intracellular Na+ on the single-channel kinetics of Mg2+ block was studied in recombinant NR1-NR2B NMDA receptor channels. Na+ prevents Mg2+ access to its blocking site by occupying two sites in the external portion of the permeation pathway. The occupancy of these sites by intracellular, but not extracellular, Na+ is voltage-dependent. In the absence of competing ions, Mg2+ binds rapidly (&gt;108 M−1s−1, with no membrane potential) to a site that is located 0.60 through the electric field from the extracellular surface. Occupancy of one of the external site

Стилі APA, Harvard, Vancouver, ISO та ін.

15

BYSTROV, N. S., A. V. EMELIANOV, A. V. EREMIN, and P. I. YATSENKO. "REFINED DATA ON O2 DISSOCIATION RATE MEASURED BYO-ARAS BEHIND SHOCKWAVES." Gorenie i vzryv (Moskva) - Combustion and Explosion 16, no. 1 (2023): 15–22. http://dx.doi.org/10.30826/ce23160102.

Повний текст джерела

Анотація:

The formation of atomic oxygen in high-temperature gas flows affects both the thermodynamic state of the gas and the kinetics of proceeding chemical processes. During hypersonic and space flights, there is still a significant lack of understanding of the phenomena of flow around high-speed vehicles. One of the main reactions occurring in the bow shock zone is the dissociation of molecular oxygen into O atoms. Experimental studies of the kinetics of O2 dissociation were carried out by various methods; however, the O2 dissociation rate constants in modern combustion mechanisms still differ by or

Стилі APA, Harvard, Vancouver, ISO та ін.

16

Lindhout, T., G. Willems, R. Blezer, and H. C. Hemker. "Kinetics of the inhibition of human factor Xa by full-length and truncated recombinant tissue factor pathway inhibitor." Biochemical Journal 297, no. 1 (1994): 131–36. http://dx.doi.org/10.1042/bj2970131.

Повний текст джерела

Анотація:

The inhibition equilibrium and kinetics of association and dissociation of the binding of three types of recombinant tissue factor pathway inhibitor (TFPI), namely full-length TFPI, C-terminal-truncated TFPI, and TFPI without the third Kunitz domain (TFPI1-161), to factor Xa have been measured. Formation and dissociation of the complexes were monitored by continuous measurement of the changes in the rate of hydrolysis of a peptidyl-p-nitroanilide substrate. Progress curves of product formation were fitted to a set of equations describing a one-step bimolecular inhibitory reaction in the presen

Стилі APA, Harvard, Vancouver, ISO та ін.

17

Udema, Ikechukwu Iloh. "Directly and Indirectly Determinable Rate Constants in Michaelian Enzyme-Catalyzed Reactions." Asian Journal of Biochemistry, Genetics and Molecular Biology 15, no. 1 (2023): 41–55. http://dx.doi.org/10.9734/ajbgmb/2023/v15i1327.

Повний текст джерела

Анотація:

Backed by kinetic schemes, attempts have been made to derive equations for the calculation of all zero-order first-order rate constants (ZOFORC) for the activation of the enzyme-substrate (ES) complex and its deactivation. The values of ZOFORC, including the kind for the dissociation of the enzyme-product complex (EP) to free enzyme (E) and product (P), are hardly reported. The methods of research were primarily Bernfeld and Lineweaver methods. The goal of the research was to determine ways for the utilization of experimental data for the determination of verifiable and quantifiable rate const

Стилі APA, Harvard, Vancouver, ISO та ін.

18

Ikechukwu I. Udema. "Derivation of steady-state first-order rate constant equations for enzyme-substrate complex dissociation, as well as zero-order rate constant equations in relation to background assumptions." GSC Biological and Pharmaceutical Sciences 21, no. 3 (2022): 175–89. http://dx.doi.org/10.30574/gscbps.2022.21.3.0482.

Повний текст джерела

Анотація:

The maximum velocity (Vmax) of catalysis and the substrate concentration ([ST]) at half the Vmax, the KM, are regarded as steady-state (SS) parameters even though they are the outcomes of zero-order kinetics (ZOK). The research was aimed at disputing such a claim with the following objectives: To: 1) carry out an overview of issues pertaining to the validity of assumptions; 2) derive the needed steady-state (SS) equations distinct from Michaelian equations that can be fitted to both experimental variables and kinetic parameters; 3) calculate the SS first-order rate constant for the dissociatio

Стилі APA, Harvard, Vancouver, ISO та ін.

19

Rakhmanov, G. T., B. Е. Umirzakov, and D. T. Usmanov. "Determination of the Kinetic Characteristics of Thermal Desorption and Heterogeneous Reaction of Dissociation of Morphine Molecules on the Surface of Oxidized Tungsten." Поверхность. Рентгеновские, синхротронные и нейтронные исследования, no. 5 (May 1, 2023): 16–22. http://dx.doi.org/10.31857/s1028096023050151.

Повний текст джерела

Анотація:

Under the same experimental conditions the processes of adsorption, heterogenous reaction of dissociation on the surface and thermodesorption of C17H19NO3 morphine molecules with m/z 285 Da on the surface of oxidized tungsten was studied by the non-stationary such as voltage modulation and flux modulation methods. The experiments were carried out on a high-vacuum mass-spectrometer, in which a “black chamber” was used, all walls of which are cooled with liquid nitrogen. The kinetic characteristics of the processes of thermal desorption and the heterogeneous reaction of dissociation of molecules

Стилі APA, Harvard, Vancouver, ISO та ін.

20

Shao, Ying, Li Yao, Yingchen Mao, and Jingjun Zhong. "Anharmonic effect of dissociation rate constant of the ethoxy radical." Chemical Physics Letters 501, no. 1-3 (2010): 134–39. http://dx.doi.org/10.1016/j.cplett.2010.10.041.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

21

Fukumoto, Ayako, Wu-Yang Sean, Toru Sato, Akihiro Yamasaki, and Fumio Kiyono. "Estimation of dissociation rate constant of CO2hydrate in water flow." Greenhouse Gases: Science and Technology 5, no. 2 (2014): 169–79. http://dx.doi.org/10.1002/ghg.1469.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

22

K. Narsaiah, S.N. Jha, Pranita Jaiswal, et al. "Kinetic Binding Analysis of Biomolecular Interactions Using Surface Plasmon Resonance System." Journal of Agricultural Engineering (India) 53, no. 2 (2024): 38–44. http://dx.doi.org/10.52151/jae2016532.1602.

Повний текст джерела

Анотація:

Surface plasmon resonance (SPR) technology is a versatile and sensitive tool widely used for kinetic studies of interactions between unlabelled biomolecules in real time. The interactions of 4-carboxy benzene sulfonamide (4-CBS) inhibitor, with the enzyme carbonic anhydrase II (CA II) and Interleukin 2 with its antibody (IL 2 antibody) were determined at different concentrations by injecting at a flow rate of 100 μl.min-1 for 60s (100 μl) for a 1 min association phase, which was followed by a 2 min dissociation phase. Langmuir model yielded the rate constants ka and kd , which were of the orde

Стилі APA, Harvard, Vancouver, ISO та ін.

23

Vermaas, Josh V., Riin Kont, Gregg T. Beckham, et al. "The dissociation mechanism of processive cellulases." Proceedings of the National Academy of Sciences 116, no. 46 (2019): 23061–67. http://dx.doi.org/10.1073/pnas.1913398116.

Повний текст джерела

Анотація:

Cellulase enzymes deconstruct recalcitrant cellulose into soluble sugars, making them a biocatalyst of biotechnological interest for use in the nascent lignocellulosic bioeconomy. Cellobiohydrolases (CBHs) are cellulases capable of liberating many sugar molecules in a processive manner without dissociating from the substrate. Within the complete processive cycle of CBHs, dissociation from the cellulose substrate is rate limiting, but the molecular mechanism of this step is unknown. Here, we present a direct comparison of potential molecular mechanisms for dissociation via Hamiltonian replica e

Стилі APA, Harvard, Vancouver, ISO та ін.

24

Brown, Nicholas G., Dar-Chone Chow, and Timothy Palzkill. "BLIP-II Is a Highly Potent Inhibitor of Klebsiella pneumoniae Carbapenemase (KPC-2)." Antimicrobial Agents and Chemotherapy 57, no. 7 (2013): 3398–401. http://dx.doi.org/10.1128/aac.00215-13.

Повний текст джерела

Анотація:

ABSTRACTβ-Lactamase inhibitory protein II (BLIP-II) is a potent inhibitor of class A β-lactamases. KPC-2 is a class A β-lactamase that is capable of hydrolyzing carbapenems and has become a widespread source of resistance to these drugs for Gram-negative bacteria. Determination of association and dissociation rate constants for binding between BLIP-II and KPC-2 reveals a very tight interaction with a calculated (koff/kon) equilibrium dissociation constant of 76 fM (76 × 10−15M).

Стилі APA, Harvard, Vancouver, ISO та ін.

25

Casadó, V., R. Franco, J. Mallol, C. Lluis, and E. I. Canela. "Optimal association-saturation procedure for estimating association and dissociation rate parameters in receptør studies. Application to solubilized A1 adenosine receptors." Biochemical Journal 281, no. 2 (1992): 477–83. http://dx.doi.org/10.1042/bj2810477.

Повний текст джерела

Анотація:

A method of obtaining estimates of the maximum binding and association and dissociation rate constants for a receptor-ligand interaction is described. This new procedure, the association-saturation method, is based on an exact mathematical equation which defines the model without simplifications. The method proposed is readily applicable to any system consisting of one ligand and one receptor. With only four determinations, each involving one ligand concentration and an association time, it is possible to determine the number of specific binding sites, the dissociation and association rate con

Стилі APA, Harvard, Vancouver, ISO та ін.

26

Sales, Ana H., Vincent Zheng, Maya A. Kenawy, et al. "Inhibition of E. coli RecQ Helicase Activity by Structurally Distinct DNA Lesions: Structure—Function Relationships." International Journal of Molecular Sciences 23, no. 24 (2022): 15654. http://dx.doi.org/10.3390/ijms232415654.

Повний текст джерела

Анотація:

DNA helicase unwinding activity can be inhibited by small molecules and by covalently bound DNA lesions. Little is known about the relationships between the structural features of DNA lesions and their impact on unwinding rates and processivities. Employing E.coli RecQ helicase as a model system, and various conformationally defined DNA lesions, the unwinding rate constants kobs = kU + kD, and processivities P = (kU/(kU + kD) were determined (kU, unwinding rate constant; kD, helicase-DNA dissociation rate constant). The highest kobs values were observed in the case of intercalated benzo[a]pyre

Стилі APA, Harvard, Vancouver, ISO та ін.

27

Hofsteenge, J., H. Taguchi, and S. R. Stone. "Effect of thrombomodulin on the kinetics of the interaction of thrombin with substrates and inhibitors." Biochemical Journal 237, no. 1 (1986): 243–51. http://dx.doi.org/10.1042/bj2370243.

Повний текст джерела

Анотація:

Thrombomodulin decreased by 20-30% the Michaelis constant of two tripeptidyl p-nitroanilide substrates of thrombin. Thrombomodulin increased the rate of inactivation of thrombin by two peptidyl chloromethane inhibitors by a similar amount. This effect appeared to be due to a decrease in the dissociation constants of the inhibitors. An improved method for the separation of fibrinopeptides A and B by h.p.l.c. was developed, and this method was used to study the effect of thrombomodulin on the thrombin-catalysed cleavage of fibrinogen. In this reaction, thrombomodulin was a competitive inhibitor

Стилі APA, Harvard, Vancouver, ISO та ін.

28

Kiermeier, A., H. J. Neusser, and E. W. Schlag. "Rotational Dependence of the Unimolecular Decay Rate: Benzene Cation Dissociation." Zeitschrift für Naturforschung A 42, no. 12 (1987): 1399–401. http://dx.doi.org/10.1515/zna-1987-1206.

Повний текст джерела

Анотація:

We present the first example of unimolecular decay rates of a polyatomic system in which reactants are rotational state selected. Highly excited, but internal energy selected and J rotational quantum number selected benzene cations are produced in a two laser pump-pump experiment. Slow reactive decay of these ions is observed in a reflectron time-of-flight mass spectrometer and the total decay rate constant k(E, J ) is measured as a function of J. At constant internal energy E, k(E, J) decreases with increasing J.

Стилі APA, Harvard, Vancouver, ISO та ін.

29

Su, Minyi, Huisi Liu, Haixia Lin, and Renxiao Wang. "Machine-Learning Model for Predicting the Rate Constant of ProteinLigand Dissociation." Acta Physico-Chimica Sinica 36, no. 1 (2020): 1907006–0. http://dx.doi.org/10.3866/pku.whxb201907006.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

30

Ben Chaim, Yair, Shimrit Bochnik, Itzchak Parnas, and Hanna Parnas. "Voltage Affects the Dissociation Rate Constant of the m2 Muscarinic Receptor." PLoS ONE 8, no. 9 (2013): e74354. http://dx.doi.org/10.1371/journal.pone.0074354.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

31

Ben Chaim, Yair, Shimrit Bochnik, Itzchak Parnas, and Hanna Parnas. "Voltage Affects the Dissociation Rate Constant of the M2 Muscarinic Receptor." Biophysical Journal 106, no. 2 (2014): 103a. http://dx.doi.org/10.1016/j.bpj.2013.11.641.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

32

Vayssilov, G., and R. Tsekov. "Temperature dependence of the rate constant for dissociation of absorbed molecules." Chemical Physics Letters 188, no. 5-6 (1992): 497–500. http://dx.doi.org/10.1016/0009-2614(92)80855-6.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

33

Galezowski, Wlodzimierz, and Arnold Jarczewski. "Study of the dissociation of the products of some proton transfer reactions in acetonitrile solvent." Canadian Journal of Chemistry 70, no. 3 (1992): 935–42. http://dx.doi.org/10.1139/v92-126.

Повний текст джерела

Анотація:

The conductometric study of the products of the proton transfer reactions of C-acids (nitriles, nitroalkanes, and 2,4,6-trinitrotoluene) with the strong amine bases (1,1,3,3-tetramethylguanidine (TMG), 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), 1,8-bis(dimethylamino)naphthalene (DMAN), and piperidine) in acetonitrile shows their large degree of dissociation into free ions. The dissociation constant values have been estimated at 25 °C to be larger than 1 × 10−4 M. This weakens the formalism commonly accepted in spectrophotometric kinetic studies of these systems of reactions, based on the assump

Стилі APA, Harvard, Vancouver, ISO та ін.

34

Kiefer, J. H., and S. S. Kumaran. "Rate of methane dissociation over 2800-4300 K: the low-pressure-limit rate constant." Journal of Physical Chemistry 97, no. 2 (1993): 414–20. http://dx.doi.org/10.1021/j100104a024.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

35

Kasai, Rinshi S., Kenichi G. N. Suzuki, Eric R. Prossnitz, et al. "Full characterization of GPCR monomer–dimer dynamic equilibrium by single molecule imaging." Journal of Cell Biology 192, no. 3 (2011): 463–80. http://dx.doi.org/10.1083/jcb.201009128.

Повний текст джерела

Анотація:

Receptor dimerization is important for many signaling pathways. However, the monomer–dimer equilibrium has never been fully characterized for any receptor with a 2D equilibrium constant as well as association/dissociation rate constants (termed super-quantification). Here, we determined the dynamic equilibrium for the N-formyl peptide receptor (FPR), a chemoattractant G protein–coupled receptor (GPCR), in live cells at 37°C by developing a single fluorescent-molecule imaging method. Both before and after liganding, the dimer–monomer 2D equilibrium is unchanged, giving an equilibrium constant o

Стилі APA, Harvard, Vancouver, ISO та ін.

36

Tjepkema, John D., Robert E. Cashon, Jason Beckwith, and Christa R. Schwintzer. "Hemoglobin in Frankia, a Nitrogen-Fixing Actinomycete." Applied and Environmental Microbiology 68, no. 5 (2002): 2629–31. http://dx.doi.org/10.1128/aem.68.5.2629-2631.2002.

Повний текст джерела

Анотація:

ABSTRACT Frankia strain CcI3 grown in culture produced a hemoglobin which had optical absorption bands typical of a hemoglobin and a molecular mass of 14.1 kDa. Its equilibrium oxygen binding constant was 274 nM, the oxygen dissociation rate constant was 56 s−1, and the oxygen association rate constant was 206 μM−1 s−1.

Стилі APA, Harvard, Vancouver, ISO та ін.

37

Lundbaek, J. A., and O. S. Andersen. "Lysophospholipids modulate channel function by altering the mechanical properties of lipid bilayers." Journal of General Physiology 104, no. 4 (1994): 645–73. http://dx.doi.org/10.1085/jgp.104.4.645.

Повний текст джерела

Анотація:

Lipid metabolites, free fatty acids and lysophospholipids, modify the function of membrane proteins including ion channels. Such alterations can occur through signal transduction pathways, but may also result from "direct" effects of the metabolite on the protein. To investigate possible mechanisms for such direct effects, we examined the alterations of gramicidin channel function by lysophospholipids (LPLs): lysophosphatidylcholine (LPC), lysophosphatidylethanolamine (LPE), lysophosphatidylserine (LPS), and lysophosphatidylinositol (LPI). The experiments were done on planar bilayers formed by

Стилі APA, Harvard, Vancouver, ISO та ін.

38

Bryan, Nick, Dominic Jones, Rose Keepax, et al. "Factors affecting the dissociation of metal ions from humic substances." Mineralogical Magazine 79, no. 6 (2015): 1397–405. http://dx.doi.org/10.1180/minmag.2015.079.6.15.

Повний текст джерела

Анотація:

AbstractPreviously, it has been suggested that metal ions complexed to humic acid in the environment might show slower dissociation than those added to humic substances in the laboratory, which has serious implications for the transport of radionuclides in the environment. The dissociation of lanthanide and anthropogenic actinide ions from humic substance complexes has been studied as a function of humic concentration and metal ion:humic concentration ratio. The results suggest that the apparently slower kinetics observed for metal ions complexed in the environment are probably due to the larg

Стилі APA, Harvard, Vancouver, ISO та ін.

39

Beattie, JK, and KJ Mcmahon. "Dynamics of the Bis-Tris and High Spin-Low Spin Equilibria of 2-(2′-Pyridyl)imidazoleiron(II) Complexes in Dimethyl Sulfoxide Solutions." Australian Journal of Chemistry 41, no. 9 (1988): 1315. http://dx.doi.org/10.1071/ch9881315.

Повний текст джерела

Анотація:

Ultrasonic and temperature-jump relaxation kinetics have been used to observe, respectively, the spin equilibrium and tris-bis ligand dissociation equilibrium of the 2-(2′-pyridyl) imidazoleiron (II) complexes in dimethyl sulfoxide solutions. In the ultrasonic experiments a single relaxation curve describes the excess sound absorption with a relaxation time of 73�3 ns. This was identified as perturbation of the singlet-quintet spin equilibrium by comparison with previous laser temperature-jump measurements in other solvents and by the temperature dependence of the relaxation amplitude. The equ

Стилі APA, Harvard, Vancouver, ISO та ін.

40

Anderson, C. S., R. MacKinnon, C. Smith, and C. Miller. "Charybdotoxin block of single Ca2+-activated K+ channels. Effects of channel gating, voltage, and ionic strength." Journal of General Physiology 91, no. 3 (1988): 317–33. http://dx.doi.org/10.1085/jgp.91.3.317.

Повний текст джерела

Анотація:

Charybdotoxin (CTX), a small, basic protein from scorpion venom, strongly inhibits the conduction of K ions through high-conductance, Ca2+-activated K+ channels. The interaction of CTX with Ca2+-activated K+ channels from rat skeletal muscle plasma membranes was studied by inserting single channels into uncharged planar phospholipid bilayers. CTX blocks K+ conduction by binding to the external side of the channel, with an apparent dissociation constant of approximately 10 nM at physiological ionic strength. The dwell-time distributions of both blocked and unblocked states are single-exponentia

Стилі APA, Harvard, Vancouver, ISO та ін.

41

VanCott, T. C., F. R. Bethke, V. R. Polonis, et al. "Dissociation rate of antibody-gp120 binding interactions is predictive of V3-mediated neutralization of HIV-1." Journal of Immunology 153, no. 1 (1994): 449–59. http://dx.doi.org/10.4049/jimmunol.153.1.449.

Повний текст джерела

Анотація:

Abstract mAbs specific for the V3 loop of HIV-1 are capable of neutralizing laboratory strains of HIV-1 in vitro. In this report we use surface plasmon resonance and biosensor technology to demonstrate that the ability of V3-specific mAbs to neutralize HIV-1(MN) correlated with the dissociation rate constant of the homologous mAb-gp120 binding interaction. mAbs capable of binding diverse strains of gp120 with similar association rate constants exhibited marked differences in the dissociation rate. The dissociation rate, and not the association rate, was found to be predictive of the neutraliza

Стилі APA, Harvard, Vancouver, ISO та ін.

42

Lebedev, Yurii, and Vyasheslav Shakhatov. "Electron impact dissociation of CO2 (a review)." ADVANCES IN APPLIED PHYSICS 9, no. 5 (2021): 365–92. http://dx.doi.org/10.51368/2307-4469-2021-9-5-365-392.

Повний текст джерела

Анотація:

Based on a detailed analysis and generalization of the results of calculations of the energy spectrum of electrons using different models in gas discharges in pure carbon dioxide CO2 and in mixtures containing CO2 , the rate constant of CO2 dissociation by electron impact in a gas discharge of direct current at atmospheric pressure is found. It is shown that, at values of the reduced electric field from 55 Td to 100 Td, the predominant mechanism of decomposition of the CO2 molecule is the collision of CO2 molecules with electrons. An expression is obtained for calculating the rate consta

Стилі APA, Harvard, Vancouver, ISO та ін.

43

Rakitzis, E. T. "Kinetic analysis of regeneration by dilution of a covalently modified protein." Biochemical Journal 268, no. 3 (1990): 669–70. http://dx.doi.org/10.1042/bj2680669.

Повний текст джерела

Анотація:

An analysis of regeneration by dilution of a covalently modified protein is presented. It is shown that, when protein regeneration is realized through the intermediacy of a protein-modifying agent adsorptive complex, the reaction is described by a summation of two exponential functions of reaction time plus a constant-term equation. The conditions whereby this equation reduces to a single-exponential equation are delineated. It is shown that, when protein regeneration is described by a single-exponential function of reaction time, the first-order protein-regeneration rate constant is a functio

Стилі APA, Harvard, Vancouver, ISO та ін.

44

Lyon, Angela P., Nicola J. Banton, and Donal H. Macartney. "Kinetics of the self-assembly of bold alpha -cyclodextrin [2]pseudorotaxanes with polymethylene threads bearing quaternary ammonium and phosphonium end groups." Canadian Journal of Chemistry 76, no. 6 (1998): 843–50. http://dx.doi.org/10.1139/v98-092.

Повний текст джерела

Анотація:

The kinetics and mechanism of the formation and dissociation of a series of [2]pseudorotaxanes, comprised of α -cyclodextrin (α -CD) as the cyclic component and the ([Me3N(CH2)nNMe3]2+ (n = 8-12), [Me2EtN(CH2)10NEtMe2]2+, and [Me3P(CH2)10PMe3]2+) dications as the threads, were determined by means of 1H and 31P NMR in aqueous solution. The length of the polymethylene chain (n) of the thread, which has a minor effect on the rate constant for pseudorotaxane formation, is important in the kinetics of the dissociation reactions, with the longer, more hydrophobic chains resulting in slower pseudorot

Стилі APA, Harvard, Vancouver, ISO та ін.

45

Kaválek, Jaromír, Josef Jirman, Vladimír Macháček, and Vojeslav Štěrba. "An anomalous effect of methyl group on acidity of acylthioureas." Collection of Czechoslovak Chemical Communications 52, no. 8 (1987): 1992–98. http://dx.doi.org/10.1135/cccc19871992.

Повний текст джерела

Анотація:

Dissociation constants and methanolysis rate constants have been measured of 1-acetyl- and 1-benzoylthioureas and their N-methyl derivatives. Replacement of hydrogen atom at N(1) (next to the acyl group) by methyl group increases the acidity of the benzoyl derivative by one order, that of the acetyl derivative by as much as two orders of magnitude. Replacement of both hydrogens at N(3) by methyl groups lowers the methanolysis rate constant by more than two orders, whereas the replacement of hydrogen atom at N(1) by methyl group increases the methanolysis rate by the factor of 30.

Стилі APA, Harvard, Vancouver, ISO та ін.

46

Brand, Sue Ellen, Martha Scharlau, Lois Geren, et al. "Accelerated Evolution of Cytochrome c in Higher Primates, and Regulation of the Reaction between Cytochrome c and Cytochrome Oxidase by Phosphorylation." Cells 11, no. 24 (2022): 4014. http://dx.doi.org/10.3390/cells11244014.

Повний текст джерела

Анотація:

Cytochrome c (Cc) underwent accelerated evolution from the stem of the anthropoid primates to humans. Of the 11 amino acid changes that occurred from horse Cc to human Cc, five were at Cc residues near the binding site of the Cc:CcO complex. Single-point mutants of horse and human Cc were made at each of these positions. The Cc:CcO dissociation constant KD of the horse mutants decreased in the order: T89E > native horse Cc > V11I Cc > Q12M > D50A > A83V > native human. The largest effect was observed for the mutants at residue 50, where the horse Cc D50A mutant decreased KD f

Стилі APA, Harvard, Vancouver, ISO та ін.

47

Collier, W., LS Curtis, NF Curtis, and IJ Pomer. "Kinetics of Acid-Hydrolysis of Nickel(II) and Copper(II) Compounds With the Cyclic Diamines 1,5-Diazocane and 4,4-Dimethyl-7-(5,5,7-trimethyl-1,4-diazepan-1-Yl)-5-azaheptan-2-ol." Australian Journal of Chemistry 42, no. 9 (1989): 1611. http://dx.doi.org/10.1071/ch9891611.

Повний текст джерела

Анотація:

The kinetics of acid-promoted hydrolysis reactions of nickel(II) and copper(ll) complexes of the cyclic diamines 1,5-diazocane ( daco ) and 4,4-dimethyl-7-(5,5,7-trimethyl-1,4-diazepan-1-yl)-5-azaheptan-2-ol (pyaz) in NaCl/HCl media ([Cl-] = 2 mol dm-3) are reported. For [Ni( daco )2]2+, beyond small [H+], an acid-limited rate constant of 2.0×10-5 S-l, involving dissociation of the first daco ligand, and for [Cu( daco )2]2+ a similarly acid-limited rate constant of 1.5×10-2 s-l, involving dissociation of the second daco ligand, were measured at 50°C. For [Ni( pyaz )]2+ and [Cu ( pyaz )2+ the r

Стилі APA, Harvard, Vancouver, ISO та ін.

48

Brière, Kathleen M., and Christian Detellier. "Solvent effects in the metal interchange of crown ether – alkali metal cation complexes. Transition from an associative exchange in nitromethane to a dissociative exchange in acetonitrile studied by 23Na nuclear magnetic resonance." Canadian Journal of Chemistry 70, no. 10 (1992): 2536–43. http://dx.doi.org/10.1139/v92-321.

Повний текст джерела

Анотація:

The role of the solvent in the dissociation kinetics and cation exchange mechanisms of the complex sodium–monobenzo-15-crown-5 (Na: B15C5)+ was examined by 23Na NMR. In nitromethane (NM), the cationic exchange between the complexes takes place via an associative metal interchange mechanism, 1M. In acetonitrile (AN), it takes place via a dissociative (dissociation/recombination) mechanism. In AN–NM binary mixtures, the rate constant of the dissociative exchange (k−1) increases with the AN molar fraction, XAN, from 1.1 × 10−2 s−1 for XAN = 0 to 89 × 10−2 s−1 for XAN = 0.400 (corresponding to a d

Стилі APA, Harvard, Vancouver, ISO та ін.

49

Schoenberg, M., and E. Eisenberg. "ADP binding to myosin cross-bridges and its effect on the cross-bridge detachment rate constants." Journal of General Physiology 89, no. 6 (1987): 905–20. http://dx.doi.org/10.1085/jgp.89.6.905.

Повний текст джерела

Анотація:

We have studied the binding of adenosine diphosphate (ADP) to attached cross-bridges in chemically skinned rabbit psoas muscle fibers and the effect of that binding on the cross-bridge detachment rate constants. Cross-bridges with ADP bound to the active site behave very similarly to cross-bridges without any nucleotide at the active site. First, fiber stiffness is the same as in rigor, which presumably implies that, as in rigor, all the cross-bridges are attached. Second, the cross-bridge detachment rate constants in the presence of ADP, measured from the rate of decay of the force induced by

Стилі APA, Harvard, Vancouver, ISO та ін.

50

Martin, G. E. M., N. G. Rutherford, P. J. F. Henderson, and A. R. Walmsley. "Kinetics and thermodynamics of the binding of forskolin to the galactose-H+ transport protein, GalP, of Escherichia coli." Biochemical Journal 308, no. 1 (1995): 261–68. http://dx.doi.org/10.1042/bj3080261.

Повний текст джерела

Анотація:

The binding of the transport inhibitor, forskolin, to the galactose-H+ symporter, GalP, of Escherichia coli was evaluated by equilibrium and time-resolved fluorescence measurements. A quench in protein fluorescence of 8-12% was observed upon the binding of forskolin. The overall dissociation constant (Kd) for forskolin determined by fluorescence titration ranged between 1.2 and 2.2 microM, which is similar to that reported from equilibrium dialysis measurements of the binding of [3H]forskolin (Kd = 0.9-1.4 microM). The kinetics of forskolin binding were measured by stopped-flow fluorescence me

Стилі APA, Harvard, Vancouver, ISO та ін.

Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!