Results 51 to 60 of about 69,474 (333)

Exciton scattering in light-harvesting systems of purple bacteria [PDF]

open access: yes, 2001
Using the reduced density matrix formalism the exciton scattering in light-harvesting systems of purple bacteria is calculated. The static disorder (fluctuations of the site energies) as well as the dynamic disorder (dissipation) is taken into account in
Chachisvilis   +15 more
core   +2 more sources

Translational and rotational motions of albumin sensed by a non-covalent associated porphyrin under physiological and acidic conditions: a fluorescence correlation spectroscopy and time resolved anisotropy study. [PDF]

open access: yes, 2008
The interaction between a free-base, anionic water-soluble porphyrin, TSPP, and the drug carrier protein, bovine serum albumin (BSA) has been studied by time-resolved fluorescence anisotropy (TRFA) and fluorescence correlation spectroscopy (FCS) at two ...
Andrade, S.M.   +4 more
core   +2 more sources

Shape of the fluidity gradient in the plasma membrane of living HeLa cells.

open access: yesJournal of Lipid Research, 1990
The shape of the fluidity gradient of the outer hemi-leaflet of the plasma membrane of living HeLa cells was determined using a series of n-(9-anthroyloxy) fatty acid probes where n = 2, 3, 6, 7, 9, 10, 11, 12, and 16.
JM Collins, RN Dominey, WM Grogan
doaj   +1 more source

Probing conformational stability and dynamics of erythroid and nonerythroid spectrin: effects of urea and guanidine hydrochloride. [PDF]

open access: yesPLoS ONE, 2015
We have studied the conformational stability of the two homologous membrane skeletal proteins, the erythroid and non-erythroid spectrins, in their dimeric and tetrameric forms respectively during unfolding in the presence of urea and guanidine ...
Malay Patra   +2 more
doaj   +1 more source

Specific lid-base contacts in the 26s proteasome control the conformational switching required for substrate degradation. [PDF]

open access: yes, 2019
The 26S proteasome is essential for proteostasis and the regulation of vital processes through ATP-dependent degradation of ubiquitinated substrates. To accomplish the multi-step degradation process, the proteasomes regulatory particle, consisting of lid
Aufderheide   +42 more
core   +1 more source

A Review of New High-Throughput Methods Designed for Fluorescence Lifetime Sensing From Cells and Tissues

open access: yesFrontiers in Physics, 2021
Though much of the interest in fluorescence in the past has been on measuring spectral qualities such as wavelength and intensity, there are two other highly useful intrinsic properties of fluorescence: lifetime (or decay) and anisotropy (or polarization)
Aric Bitton   +3 more
doaj   +1 more source

Decreased membrane fluidity and altered susceptibility to peroxidation and lipid composition in overweight and obese female erythrocytes

open access: yesJournal of Lipid Research, 2004
The increased generation of reactive oxygen species that occurs in the condition of obesity may be responsible for oxidative injury to erythrocyte membranes, which could lead to a decrease in tissue oxygenation. Therefore, we have looked into the effects
Roberta Cazzola   +4 more
doaj   +1 more source

Molecular basis for modulation of the p53 target selectivity by KLF4 [PDF]

open access: yes, 2012
The tumour suppressor p53 controls transcription of various genes involved in apoptosis, cell-cycle arrest, DNA repair and metabolism. However, its DNA-recognition specificity is not nearly sufficient to explain binding to specific locations in vivo ...
Brandt, Tobias   +4 more
core   +4 more sources

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

open access: yesAdvanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana   +2 more
wiley   +1 more source

TA Anisotropy Summary [PDF]

open access: yesEPJ Web of Conferences, 2019
The Telescope Array (TA) is the largest ultra-high-energy cosmic-ray (UHECR) detector in the northern hemisphere. It consists of an array of 507 surface detectors (SD) covering a total 700 km2 and three fluorescence detector stations overlooking the SD ...
Kawata K.   +12 more
doaj   +1 more source

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