Results 71 to 80 of about 778,835 (257)

Imaging cytochrome C oxidase and FoF1-ATP synthase in mitochondrial cristae of living human cells by FLIM and superresolution microscopy [PDF]

open access: yesarXiv, 2017
Cytochrome C oxidase and FoF1-ATP synthase constitute complex IV and V, respectively, of the five membrane-bound enzymes in mitochondria comprising the respiratory chain. These enzymes are located in the inner mitochondrial membrane (IMM), which exhibits large invaginations called cristae.
arxiv  

Role of Lipids in the Control of Sex Differences in the Phase I Metabolism of Drugs [PDF]

open access: yes, 1988
Hepatic microsomal preparations from male and female rats were delipidated by column chromatography following cholate solubilisation. The enzyme activity was assayed using lignocaine as the substrate for the mixed function oxidase.
Meftah, Nuri Musa
core  

Illuminating Immunity: A Systematic Review of Immune Cell Autofluorescence

open access: yesJournal of Biophotonics, EarlyView.
ABSTRACT Immunophenotyping provides valuable prognostic and diagnostic information, but is technically complex and expensive. The assessment of autofluorescence is label‐free and provides complex information on cell identity. However, research on its application to immunophenotyping has been heterogenous.
Aline Knab   +4 more
wiley   +1 more source

Optimal enzyme rhythms in cells [PDF]

open access: yesarXiv, 2016
Cells can use periodic enzyme activities to adapt to periodic environments or existing internal rhythms and to establish metabolic cycles that schedule biochemical processes in time. A periodically changing allocation of the protein budget between reactions or pathways may increase the overall metabolic efficiency.
arxiv  

Hepatic Cytochrome P-450. A Proton Magnetic Relaxation Study of Microsomal, Solubilized and Partially Reconstituted Enzyme System [PDF]

open access: yes, 1976
The longitudiJ:ial proton magnetic relaxation times, Ti, were measured from -5 to 40 °c for microsomal, solubilized and reconstituted cytochrome P-450 obtained from phenobarbital-induced rat livers.
B. Benko   +5 more
core   +1 more source

Therapeutic challenges posed by critical drug-drug interactions in cystic fibrosis [PDF]

open access: yes, 2016
This review seeks to re-introduce cystic fibrosis (CF) clinicians to the pharmacology of drug-drug interactions among medications commonly used in CF and provide a framework for understanding these interactions among medications outside the scope of this
Henry, Marianna M.   +2 more
core   +2 more sources

The Combination of Active‐Targeted Photodynamic Therapy and Photoactivated Chemotherapy for Enhanced Cancer Treatment

open access: yesJournal of Biophotonics, EarlyView.
Photoactivated chemotherapy (PACT), an oxygen‐independent light‐based therapy, utilizes chemotherapeutic regimens that remain inert until exposed to light, allowing target‐specific activation while minimizing off‐target toxicity. The integration of these techniques has the potential to improve selectivity and yield synergistic cytotoxic effects that ...
Nkune Williams Nkune, Heidi Abrahamse
wiley   +1 more source

Comments on Nonrenewal Statistics in the Catalytic Activity of Enzyme Molecules at Mesoscopic Concentrations [PDF]

open access: yes, 2017
It is well known in enzyme kinetics that the Michaelis-Menten (MM) equation is applicable only to enzymes in the steady state. We show that the result obtained in the previous work [Phys. Rev. Lett. 107, 218301 (2011)] is inconsistent with the MM equation, not because the authors considered the enzyme system at mesoscopic concentrations but because ...
arxiv   +1 more source

Characterization of Silver Nanoparticles Synthesized Using Hypericum perforatum L. and Their Effects on Staphylococcus aureus

open access: yesMicroscopy Research and Technique, EarlyView.
This study investigated the effects of biosynthesized silver nanoparticles (AgNPs) derived from Hypericum perforatum on the cell morphology of Gram‐positive Staphylococcus aureus bacterial cells, with FE‐SEM analysis showing distinct morphological changes in AgNP‐treated S. aureus cells compared to the control group.
Canan Sevinc‐Sasmaz   +3 more
wiley   +1 more source

Vibrational energy relaxation (VER) of a CD stretching mode in cytochrome c [PDF]

open access: yesarXiv, 2004
We first review how to determine the rate of vibrational energy relaxation (VER) using perturbation theory. We then apply those theoretical results to the problem of VER of a CD stretching mode in the protein cytochrome c. We model cytochrome c in vacuum as a normal mode system with the lowest-order anharmonic coupling elements. We find that, for the ``
arxiv  

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