Results 41 to 50 of about 1,922,304 (342)

Suppression of thermally activated escape by heating [PDF]

, 2009
The problem of thermally activated escape over a potential barrier is solved by means of path integrals for one-dimensional reaction dynamics with very general time dependences. For a suitably chosen but still quite simple static potential landscape, the
Peter Reimann, Sebastian Getfert, Y.-D. Bao   +2 more
core   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Reaction-diffusion with a time-dependent reaction rate: the single-species diffusion-annihilation process

, 2004
We study the single-species diffusion-annihilation process with a time-dependent reaction rate, lambda(t)=lambda_0 t^-omega. Scaling arguments show that there is a critical value of the decay exponent omega_c(d) separating a reaction-limited regime for ...
ben-Avraham D, Bramson M, Burlisch R, Cardy J, Henkel M, Kang K, Kang K, L Turban, Lee B P, Lushnikov A A, Peliti L, Ódor G   +11 more
core   +2 more sources

A theoretical study of ozone isotopic effects using a modified ab initio potential energy surface [PDF]

, 2002
A modified ab initio potential energy surface (PES) is used for calculations of ozone recombination and isotopic exchange rate constants. The calculated low-pressure isotopic effects on the ozone formation reaction are consistent with the experimental ...
Chen, Wei-Chen, Gao, Yi Qin, Marcus, R. A.   +2 more
core   +1 more source

Rate constant formulae for fast reactions

AIP Conference Proceedings, 1994
This paper presents formulae that we have derived recently for the rate constants of some chemical reactions important in interstellar chemistry. First of all, the application of a simple classical capture theory to the rate constants for the fast reactions of ground‐state carbon atoms with organic molecules is described.
openaire   +2 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Decision time, slow inhibition, and theta rhythm [PDF]

, 2010
In this paper, we examine decision making in a spiking neuronal network and show that longer time constants for the inhibitory neurons can decrease the reaction times and produce theta rhythm.We analyze the mechanism and find that the spontaneous firing
Feng, Jianfeng, Rolls, Edmund T., Smerieri, Anteo   +2 more
core   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Effect of different choices of the Boltzmannized flux operator on thermal exchange and recombination reactions

, 2003
The rate constants for recombination and exchange reactions are calculated using the flux correlation approach with a general form of the Boltzmannized flux operator, which can simultaneously describe the Kubo and traditional half-split forms.
Chandler, Feynman, Germann, Hänggi, Koichi Saito, Kubo, Kubo, Leforestier, Mandelshtam, Miller, Miller, Miller, Miller, Miller, Mori, Qi, Saito, Schulman, Smedarchina, Sun, Thompson, Voth, Wolynes, Yamamoto, Yamamoto, Zang   +25 more
core   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source