Results 61 to 70 of about 61,022 (308)

Efflux pumps mediate changes to fundamental bacterial physiology via membrane potential

mBio
Efflux pumps are well known to be an important mechanism for removing noxious substances such as antibiotics from bacteria. Given that many antibiotics function by accumulating inside bacteria, efflux pumps contribute to resistance.
Emily E. Whittle, Oluwatosin Orababa, Alexander Osgerby, Pauline Siasat, Sarah J. Element, Jessica M. A. Blair, Tim W. Overton   +6 more
doaj   +1 more source

Functional Analysis of Ligand‐Gated Chloride Channels in a Cnidarian Sheds Light on the Evolution of Inhibitory Signaling

Advanced Science, EarlyView.
We uncover a large variety of putative inhibitory ligand‐gated ion channels (LGICs) in the phylum Cnidaria, the sister group to all bilaterian animals. Phylogenetic analysis suggests a complex evolutionary history of inhibitory LGICs with diverse neurotransmitter ligands.
Abhilasha Ojha, Linda Kloss, Juan D. Montenegro, Simone Albani, Audrey Ortega‐Ramírez, Mihaela Raycheva, Sylvia Joussen, Sabrina Kaul, Michèle Bachmann, Lisa Huf, Günther Schmalzing, Alison G. Cole, Ulrich Technau, Stefan Gründer   +13 more
wiley   +1 more source

In-Cell Determination of Lactate Dehydrogenase Activity in a Luminal Breast Cancer Model – ex vivo Investigation of Excised Xenograft Tumor Slices Using dDNP Hyperpolarized [1-¹³C]pyruvate

Sensors, 2019
[1-13C]pyruvate, the most widely used compound in dissolution-dynamic nuclear polarization (dDNP) magnetic resonance (MR), enables the visualization of lactate dehydrogenase (LDH) activity.
Yael Adler-Levy, Atara Nardi-Schreiber, Talia Harris, David Shaul, Sivaranjan Uppala, Gal Sapir, Naama Lev-Cohain, Jacob Sosna, Shraga Nahum Goldberg, J. Moshe Gomori, Rachel Katz-Brull   +10 more
doaj   +1 more source

The Role of Hyperpolarization-Activated Cyclic Nucleotide-Gated Channels in the Pathophysiology of Absence Epilepsy

, 2018
Hyperpolarization-activated cyclic nucleotide-gated (HCN) channels participate in pacemaker currents, modulating the funny current (I[f]) in cardiac cells and the hyperpolarization-activated current (I[h]) in neurons.
Filiz ONAT, Melis YAVUZ
core   +1 more source

Fibronectin1‐Expressing Subicular Circuits Selectively Govern the Retrieval of Novel Object Recognition

Advanced Science, EarlyView.
Fibronectin 1 (FN1)‐expressing subicular subpopulations encode novel object preference and selectively govern retrieval of novel object recognition (NOR) via affecting excitability of entorhinal‐projecting circuit through large conductance Ca2+‐activated potassium (BK) channel. ABSTRACT Novel object recognition (NOR), referring to the cognitive ability
Fan Fei, Jiaying Shi, Jing Xi, Yixiang Xu, Shuye Ying, Xukun Fan, Wangjialu Lu, Zhisheng Li, Menghan Li, Yu Wang, Li Cheng, Lin Yang, Lingyu Xu, Zhong Chen, Cenglin Xu, Yi Wang   +15 more
wiley   +1 more source

Rapid Fragment Screening by 19F Steady‐State Free Precession NMR

Angewandte Chemie, EarlyView.
19F$^{19}{\rm F}$ SSFP NMR is a broadband and very sensitive experiment for detecting protein–ligand interactions. The method enables rapid fragment screening at low micromolar protein concentrations, even for challenging drug targets such as intrinsically disordered proteins.
Laura Ruduša, Sintija Ozola, Kostiantyn P. Melnykov, Yaroslav I. Filatov, Serhiy V. Ryabukhin, Raitis Bobrovs, Dmytro M. Volochnyuk, Kristaps Jaudzems, Rihards Aleksis   +8 more
wiley   +2 more sources

In situ Hyperpolarization Enables Benchtop NMR of Heteronuclei at Natural Isotopic Abundance

, 2023
Without employing isotopic labeling, we demonstrate generation of 15N and 13C NMR signals for molecules containing -NH2 motifs using benchtop NMR spectrometers (1-1.4 T).
Raphael, Kircher, Jingyan, Xu, Danila, Barskiy   +2 more
core   +1 more source

Low-field microwave-mediated optical hyperpolarization in optically pumped diamond [PDF]

, 2021
The emergence of a new class of optically polarizable electronic spins in diamond, nitrogen vacancy (NV) defect centers, has opened interesting new avenues for dynamic nuclear polarization.
Ajoy, Ashok, Druga, E, Meriles, CA, Reimer, Jeffrey A., Ajoy, A, Zangara, P, Zangara, Pablo René, Meriles, Carlos A., Reimer, JA, Pagliero, Daniela, Pagliero, D, Sarkar, Adrisha, Druga, Emanuel, Sarkar, A   +13 more
core   +1 more source

FGF13 Deficiency Ameliorates Paclitaxel‐Induced Neuropathic Pain by Inhibiting VASH1‐Mediated Microtubule Detyrosination to Promote Mitophagy

Advanced Science, EarlyView.
FGF13 is upregulated in DRG neurons of PIPNP model mice. DRG neuron‐specific knockout of FGF13 ameliorates PIPNP symptoms. Mechanistically, FGF13 potentiates microtubule detyrosination by promoting VASH1 binding to microtubules. FGF13 knockout suppresses VASH1‐mediated microtubule detyrosination and promotes α‐tubulin tyrosination.
Yiming Dong, Yidan Wang, Simeng Lv, Zishan Dong, Kaixi Zhi, Xiuhua Guo, Xuyan Li, Ruoxi Yu, Yiyi Zhang, Siyuan Cheng, Chuan Wang   +10 more
wiley   +1 more source

Detecting de novo Hepatic Ketogenesis Using Hyperpolarized [2-13C] Pyruvate

Frontiers in Physiology, 2022
The role of ketones in metabolic health has progressed over the past two decades, moving from what was perceived as a simple byproduct of fatty acid oxidation to a central player in a multiplicity of disease states. Previous work with hyperpolarized (HP)
Mukundan Ragavan, Marc A. McLeod, Anna Rushin, Matthew E. Merritt   +3 more
doaj   +1 more source