Results 41 to 50 of about 2,353,500 (291)

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Spatial reference frame agreement in quantum networks

open access: yesNew Journal of Physics, 2014
In order to communicate information in a quantum network effectively, all network nodes should share a common reference frame. Here, we propose to study how well m nodes in a quantum network can establish a common spatial reference frame from scratch ...
Tanvirul Islam   +3 more
doaj   +1 more source

Hierarchical video summarisation in reference frame subspace [PDF]

open access: yes, 2009
In this paper, a hierarchical video structure summarization approach using Laplacian Eigenmap is proposed, where a small set of reference frames is selected from the video sequence to form a reference subspace to measure the dissimilarity between two ...
Crookes, D, Jiang, RM, Sadka, AH
core  

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

Automatic Image Registration Provides Superior Accuracy Compared with Surface Matching in Cranial Navigation

open access: yesSensors
Objective: The precision of neuronavigation systems relies on the correct registration of the patient’s position in space and aligning it with radiological 3D imaging data.
Henrik Frisk   +11 more
doaj   +1 more source

Celestial Reference Frames [PDF]

open access: yesInternational Astronomical Union Colloquium, 1980
AbstractA celestial reference frame is based on some dynamical or kinematic approximation of an absolute coordinate system and is materialized by a fundamental catalogue of stars. It is characterized by the accuracy of the system and the precision of its stellar realization.The present situation, marked by the construction of the FK5 system and ...
openaire   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

open access: yesFEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva   +5 more
wiley   +1 more source

Roles of the Retinotopic and Environmental Frames of Reference on Vection

open access: yesFrontiers in Virtual Reality, 2020
Humans perceive self-motion using multisensory information, while vision has a dominant role as is utilized in virtual reality (VR) technologies. Previous studies reported that visual motion presented in the lower visual field (LoVF) induces stronger ...
Kanon Fujimoto   +2 more
doaj   +1 more source

The Effects of the IERS Conventions (2010) on High Precision Orbit Propagation [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2014
The Earth is not perfectly spherical and its rotational axis is not fixed in space, and these geophysical and kinematic irregularities work as dominant perturbations in satellite orbit propagation.
Kyoung-Min Roh, Byung-Kyu Choi
doaj   +1 more source

Egocentric and Allocentric Reference Frames Can Flexibly Support Contextual Cueing

open access: yesFrontiers in Psychology, 2021
We investigated if contextual cueing can be guided by egocentric and allocentric reference frames. Combinations of search configurations and external frame orientations were learned during a training phase.
Lei Zheng   +4 more
doaj   +1 more source

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