Results 71 to 80 of about 6,315,792 (319)

Mapping the evolution of mitochondrial complex I through structural variation

FEBS 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, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

An interferometric technique for B/A measurement [PDF]

, 1995
An isentropic phase method is described for measuringin vitro the acoustic nonlinearity parameterB/A of several aqueous buffers, protein solutions, lipid oils, and emulsions.
Apfel, R. E., Everbach, E. Carr
core   +2 more sources

4D XCAT phantom for multimodality imaging research [PDF]

Medical Physics, 2010
Purpose: The authors develop the 4D extended cardiac‐torso (XCAT) phantom for multimodality imaging research.Methods:Highly detailed whole‐body anatomies for the adult male and female were defined in the XCAT using nonuniform rational B‐spline (NURBS) and subdivision surfaces based on segmentation of the Visible Male and Female anatomical datasets from
W P, Segars, G, Sturgeon, S, Mendonca, Jason, Grimes, B M W, Tsui   +4 more
openaire   +2 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Optimizing dual energy cone beam CT protocols for preclinical imaging and radiation research [PDF]

, 2017
Objective: The aim of this work was to investigate whether quantitative dual-energy CT (DECT) imaging is feasible for small animal irradiators with an integrated cone-beam CT (CBCT) system.
Almeida, Isabel P, Descamps, Benedicte, Granton, Patrick V, Landry, Guillaume, Schyns, Lotte E J R, van Hoof, Stefan J, Vanhove, Christian, Verhaegen, Frank   +7 more
core   +1 more source

A cadaveric breast cancer tissue phantom for phase‐contrast X‐ray imaging applications

Animal Models and Experimental Medicine, 2023
Background As mammography X‐ray imaging technologies advance and provide elevated contrast in soft tissues, a need has developed for reliable imaging phantoms for use in system design and component calibration.
Cody C. Rounds, Chengyue Li, Wei Zhou, Kenneth M. Tichauer, Jovan G. Brankov   +4 more
doaj   +1 more source

The anti‐CRISPR protein AcrIE8.1 inhibits the type I‐E CRISPR‐Cas system by directly binding to the Cascade subunit Cas11

FEBS Letters, EarlyView.
In this study, we present the structure of AcrIE8.1, a previously uncharacterized anti‐CRISPR protein that inhibits the type I‐E CRISPR‐Cas system. Through a combination of structural and biochemical analyses, we demonstrate that AcrIE8.1 directly binds to the Cas11 subunit of the Cascade complex to inhibit the CRISPR‐Cas system.
Young Woo Kang, Hyun Ho Park
wiley   +1 more source

Eigenspectra optoacoustic tomography achieves quantitative blood oxygenation imaging deep in tissues

, 2015
Light propagating in tissue attains a spectrum that varies with location due to wavelength-dependent fluence attenuation by tissue optical properties, an effect that causes spectral corruption.
Bayer, Christine, Glasl, Sarah, Multhoff, Gabriele, Ntziachristos, Vasilis, Nunes, Antonio, Olefir, Ivan, Stangl, Stefan, Symvoulidis, Panagiotis, Tzoumas, Stratis   +8 more
core   +1 more source

Sulfates as chromophores for multiwavelength photoacoustic imaging phantoms

, 2017
. As multiwavelength photoacoustic imaging becomes increasingly widely used to obtain quantitative estimates, the need for validation studies conducted on well-characterized experimental phantoms becomes ever more pressing.
Martina Fonseca, L. An, P. Beard, B. Cox
semanticscholar   +1 more source

An intracellular transporter mitigates the CO2‐induced decline in iron content in Arabidopsis shoots

FEBS Letters, EarlyView.
This study identifies a gene encoding a transmembrane protein, MIC, which contributes to the reduction of shoot Fe content observed in plants under elevated CO2. MIC is a putative Fe transporter localized to the Golgi and endosomal compartments. Its post‐translational regulation in roots may represent a potential target for improving plant nutrition ...
Timothy Mozzanino, Meijie Li, Cécile Fizames, Mattia Adamo, Laurence Lejay, Christian Dubos, Matthieu Platre, Antoine Martin   +7 more
wiley   +1 more source