Results 71 to 80 of about 3,449,089 (306)

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Synapse-specific inhibitory control of hippocampal feedback inhibitory circuit

Frontiers in Cellular Neuroscience, 2010
Local circuit and long-range GABAergic projections provide powerful inhibitory control over the operation of hippocampal inhibitory circuits, yet little is known about the input- and target-specific organization of interacting inhibitory networks in ...
Simon eChamberland, Simon eChamberland, Charleen eSalesse, Charleen eSalesse, Dimitry eTopolnik, Lisa eTopolnik, Lisa eTopolnik   +6 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

FEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil, Jeffrey A. Hawkes, Cecilia Blikstad, Pia Lindberg   +3 more
wiley   +1 more source

Optical Calibration of a Multi-Color Ellipsometric Mapping Tool Fabricated Using Cheap Parts

Photonics
We developed and applied a new calibration method to make more accurate measurements with our multi-color ellipsometric mapping tool made from cheap parts.
Berhane Nugusse Zereay, Sándor Kálvin, György Juhász, Csaba Major, Péter Petrik, Zoltán György Horváth, Miklós Fried   +6 more
doaj   +1 more source

Mapping optical process in semiconductor nanowires using dynamic optical tweezers

, 2016
We present a novel method for spatial mapping of the luminescent properties of single optically trapped semiconductor nanowires by combing dynamic optical tweezers with micro-photoluminescence. The technique involves the use of a spatial light modulator (
McGloin, David, Jagadish, Chennupati, Ming Lee, Woei, Reece, Peter, Tan, Hark Hoe, Gao, Qiang, Wang, Fan, Hartstone, Alexander, Toe, Wen Jun   +8 more
core   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Myofibroblasts impair myocardial impulse propagation by heterocellular connexin43 gap-junctional coupling through micropores

Frontiers in Physiology
Aim: Composite population of myofibroblasts (MFs) within myocardial tissue is known to alter impulse propagation, leading to arrhythmias. However, it remains unclear whether and how MFs alter their propagation patterns when contacting cardiomyocytes (CMs)
Yumika Tsuji, Yumika Tsuji, Takehiro Ogata, Kentaro Mochizuki, Shoko Tamura, Yuma Morishita, Tetsuro Takamatsu, Tetsuro Takamatsu, Satoaki Matoba, Hideo Tanaka, Hideo Tanaka   +10 more
doaj   +1 more source

A MAP equalizer for the optical communications channel [PDF]

Journal of Lightwave Technology, 2004
A maximum a posteriori equalizer is presented for optical communication systems. Assuming that the span of the intersymbol interference (ISI) does not extend beyond the neighboring bits - as is typically the case for the distortion introduced by polarization mode dispersion (PMD) - we derive the conditional probability distribution function in the ...
Wenze Xi, Tülay Adali, John Zweck
openaire   +2 more sources

Leucine‐rich glioma inactivated 1 (LGI1) is a ganglioside‐binding protein

FEBS Letters, EarlyView.
Neuronal hyperexcitability associated with a decrease/absence of the extracellular protein LGI1 has been suggested to be primarily due to the downregulation of Kv1 channel expression. The molecular mechanisms underlying this decrease have not yet been elucidated.
Kévin Debreux, Christian Lévêque, Fodil Azzaz, Marion Sangiardi, Sarosh R Irani, Michael Seagar, Jacques Fantini, Oussama El Far   +7 more
wiley   +1 more source