Results 81 to 90 of about 187,970 (266)

A comparison of an ATPase from the archaebacterium Halobacterium saccharovorum with the F1 moiety from the Escherichia coli ATP Synthase [PDF]

open access: yes
A purified ATPase associated with membranes from Halobacterium saccharovorum was compared with the F sub 1 moiety from the Escherichia coli ATP Synthase.
Hochstein, Lawrence I.   +1 more
core   +1 more source

Chromosome structure: improved immunolabeling for electron microscopy [PDF]

open access: yes, 2018
To structurally dissect mitotic chromosomes, we aim to position along the folded chromatin fiber proteins involved in long-range order, such as topoisomerase IIα (topoIIα) and condensin.
Eltsov, Michail   +2 more
core  

Coordination of SLC39A1 and DRP1 facilitates HCC recurrence by impairing mitochondrial quality control

open access: yesClinical and Translational Medicine, Volume 15, Issue 5, May 2025.
Abstract Background Despite rapid advances in HCC therapy, surgical resection is still the most effective treatment. However, postoperative relapse develops in a large population and the mechanism remains to be explored. Methods HCC resection samples were retrospectively collected from 12 nonrelapsed and 15 relapsed HCC patients for RNA sequencing ...
Rui Li   +8 more
wiley   +1 more source

An exceptional case of peritoneal cystic echinococcosis in a domestic cat in Australia

open access: yesAustralian Veterinary Journal, Volume 103, Issue 5, Page 254-260, May 2025.
A case of peritoneal cystic echinococcosis (CE) in a domestic cat was reported from Queensland, Australia. Physical examination of the cat indicated a large, distended abdomen, which when palpated appeared to be fluid‐filled. Ultrasonography showed numerous cysts with hyperechoic walls and anechoic contents within the cat's abdominal cavity.
S Abdullah   +6 more
wiley   +1 more source

Toxicity and stability of sodium cyanide in fresh water fish Nile tilapia

open access: yesWater Science, 2014
An experimental study was conducted to evaluate the effect of 0.129 NaCN mg/l for 28 days on the behavior of tilapia and the activities of adenosine triphosphatases enzyme (Na+/K+, Ca2+ and Mg2+-ATPase) within gill filaments, liver and muscles.
Enas M. Ramzy
doaj  

Analysis of the mechanism by which calcium negatively regulates the tyrosine phosphorylation cascade associated with sperm capacitation [PDF]

open access: yes, 2004
The capacitation of mammalian spermatozoa involves the activation of a cAMP-mediated signal transduction pathway that drives tyrosine phosphorylation via mechanisms that are unique to this cell type.
Aitken, R. John   +4 more
core   +2 more sources

Update of the Scientific Opinion on the risks for human health related to the presence of perchlorate in food

open access: yesEFSA Journal, Volume 23, Issue 5, May 2025.
Abstract The European Commission asked EFSA to update its 2014 risk assessment on perchlorate in food. Perchlorate is a contaminant of both natural and anthropogenic sources present in food and drinking water. It is a substrate for the sodium iodide symporter (NIS) and competitively inhibits the uptake of iodide into the thyroid.
EFSA Panel on Contaminants in the Food Chain (CONTAM)   +27 more
wiley   +1 more source

The N-terminal domains of Bacillus subtilis CopA do not form a stable complex in the absence of their inter-domain linker [PDF]

open access: yes, 2018
Copper-transporting P-type ATPases, which play important roles in trafficking Cu(I) across membranes for the biogenesis of copper proteins or for copper detoxification, contain a variable number of soluble metal-binding domains at their N-termini.
Achila   +44 more
core   +1 more source

Longitudinal Follow‐Up of Patients With Duchenne Muscular Dystrophy Using Quantitative 23Na and 1H MRI

open access: yesJournal of Cachexia, Sarcopenia and Muscle, Volume 16, Issue 2, April 2025.
ABSTRACT Background Quantitative muscle MRI commonly evaluates disease activity and muscle wasting in Duchenne muscular dystrophy (DMD). Disturbances in ion homeostasis contribute to DMD pathophysiology, but their relationships with disease progression is unclear. 23Na MRI may provide insights into the disease course and treatment response.
Teresa Gerhalter   +8 more
wiley   +1 more source

Proton pump inhibitors (PPIs) impact on tumour cell survival, metastatic potential and chemotherapy resistance, and affect expression of resistance-relevant miRNAs in esophageal cancer [PDF]

open access: yes, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work ...
Borchardt, C   +7 more
core   +1 more source

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