Results 41 to 50 of about 9,888,987 (278)

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

Review of Hybrid Aerial Underwater Vehicle: Potential Applications in the Field of Underwater Marine Optics

Drones
Hybrid Aerial Underwater Vehicle (HAUV) is a new type of unmanned system that can operate both in air and water, and complete underwater and air operations tasks by carrying corresponding sensors.
Hongyu Qi, Shuibo Hu, Jiasheng Zhang, Guofeng Wu   +3 more
doaj   +1 more source

The OLCI Neural Network Swarm (ONNS): A Bio-Geo-Optical Algorithm for Open Ocean and Coastal Waters

Frontiers in Marine Science, 2017
The processing scheme of a novel in-water algorithm for the retrieval of ocean color products from Sentinel-3 OLCI is introduced. The algorithm consists of several blended neural networks that are specialized for 13 different optical water classes. These
Martin Hieronymi, Dagmar Müller, Roland Doerffer, Roland Doerffer   +3 more
doaj   +1 more source

Primary visual cortex activity along the apparent-motion trace reflects illusory perception [PDF]

, 2005
The illusion of apparent motion can be induced when visual stimuli are successively presented at different locations. It has been shown in previous studies that motion-sensitive regions in extrastriate cortex are relevant for the processing of apparent ...
Kriegeskorte, Nikolaus, Kriegeskorte, N., Wolf Singer, Singer Wolf, Muckli, Lars, Kohler, A., Nikolaus Kriegeskorte, Muckli Lars, Wolf Singer (81850), Axel Kohler (275065), Kohler Axel, Nikolaus Kriegeskorte (275066), Lars Muckli, Lars Muckli (81851), Muckli, L., Kriegeskorte Nikolaus, Kohler, Axel, Singer, Wolf, Axel Kohler, Singer, W.   +19 more
core   +2 more sources

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

Inverse methods in hydrologic optics

Oceanologia, 2002
Methods for solving the hydrologic-optics inverse problem, i.e., estimating the inherent optical properties of a water body based solely on measurements of the apparent optical properties, are reviewed in detail.
Howard R. Gordon
doaj  

Inherent Optical Properties of Natural Seawater [PDF]

, 2014
The inherent optical properties of pure seawater and of optically active substances generally present in seawater are briefly reviewed. Interrelationship between inherent properties and some of the important apparent properties are also presented, so ...
Sathyendranath, Shubha
core   +1 more source

Quantitative compressive optical coherence elastography using structural OCT imaging and optical palpation to measure soft contact lens mechanical properties

, 2021
In this study, the principle of optical palpation was applied to a compression optical coherence elastography (OCE) method using spectral domain optical coherence tomography (OCT).
Alonso-Caneiro, D, Read, SA, Quince, Z, Collins, MJ, Read, Scott A., Alonso-Caneiro, David, Quince, Zachery, Collins, Michael J., David Alonso-Caneiro, Zachery Quince, Michael J. Collins, Scott A. Read   +11 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