Results 21 to 30 of about 164,824 (310)

Prediction of membrane transport proteins and their substrate specificities using primary sequence information. [PDF]

open access: yesPLoS ONE, 2014
Membrane transport proteins (transporters) move hydrophilic substrates across hydrophobic membranes and play vital roles in most cellular functions. Transporters represent a diverse group of proteins that differ in topology, energy coupling mechanism ...
Nitish K Mishra   +2 more
doaj   +1 more source

Multiple blood-brain barrier transport mechanisms limit bumetanide accumulation, and therapeutic potential, in the mammalian brain [PDF]

open access: yes, 2017
There is accumulating evidence that bumetanide, which has been used over decades as a potent loop diuretic, also exerts effects on brain disorders, including autism, neonatal seizures, and epilepsy, which are not related to its effects on the kidney but ...
Erker, Thomas   +7 more
core   +2 more sources

Effect of a bound anion on the structure and dynamics of halorhodopsin from Natronomonas pharaonis

open access: yesStructural Dynamics, 2019
Active ion transport across membranes is vital to maintaining the electrochemical gradients of ions in cells and is mediated by transmembrane proteins. Halorhodopsin (HR) functions as a light-driven inward pump for chloride ions. The protein contains all-
Misao Mizuno   +3 more
doaj   +1 more source

Bioinformatic characterization of the Anoctamin Superfamily of Ca2+-activated ion channels and lipid scramblases. [PDF]

open access: yesPLoS ONE, 2018
Our laboratory has developed bioinformatic strategies for identifying distant phylogenetic relationships and characterizing families and superfamilies of transport proteins.
Arturo Medrano-Soto   +5 more
doaj   +1 more source

Anion Transport by Proteins: Protein Motifs Involved in Anion Binding

open access: yes, 2022
Various cellular processes require the participation of specific anions, including Cl-, F-, I-, HCO3- and CO32-. However, their ionic charges impede their permeation across the hydrophobic lipid bilayers of the cells. Cell membranes thus contain specific macromolecular transport proteins, ion channels and transporters, to facilitate and control the ...
openaire   +2 more sources

Anion transport by the cochlear motor protein prestin

open access: yesThe Journal of Physiology, 2011
Non‐technical summary  Cochlear inner hair cells transform acoustic signals into electric signals. Another type of hair cells, outer hair cells, actively amplifies sensory signals and thus contributes to the exquisite sensitivity of the human auditory system.
Michael, Schänzler, Christoph, Fahlke
openaire   +3 more sources

Hepatocanalicular organic-anion transport is regulated by protein kinase C [PDF]

open access: yesBiochemical Journal, 1991
In order to investigate the regulation of canalicular organic-anion transport, we used a hepatocyte transport assay in which canalicular secretion of a model organic anion, dinitrophenyl-glutathione (GS-DNP), was measured in the presence of stimulators and inhibitors of the Ca2+/protein kinase C (PKC) second-messenger system and of the cyclic AMP (cAMP)
Roelofsen, H.   +3 more
openaire   +3 more sources

Transmembrane Facilitation of Lactate/H+ Instead of Lactic Acid Is Not a Question of Semantics but of Cell Viability

open access: yesMembranes, 2020
Transmembrane transport of monocarboxylates is conferred by structurally diverse membrane proteins. Here, we describe the pH dependence of lactic acid/lactate facilitation of an aquaporin (AQP9), a monocarboxylate transporter (MCT1, SLC16A1), and a ...
Annika Bader, Eric Beitz
doaj   +1 more source

The Role of Uptake and Efflux Transporters in the Disposition of Glucuronide and Sulfate Conjugates

open access: yesFrontiers in Pharmacology, 2022
Glucuronidation and sulfation are the most typical phase II metabolic reactions of drugs. The resulting glucuronide and sulfate conjugates are generally considered inactive and safe.
Erkka Järvinen   +6 more
doaj   +1 more source

Functional characterization and discovery of modulators of SbMATE, the agronomically important aluminium tolerance transporter from Sorghum bicolor. [PDF]

open access: yes, 2017
About 50% of the world's arable land is strongly acidic (pH ≤ 5). The low pH solubilizes root-toxic ionic aluminium (Al3+) species from clay minerals, driving the evolution of counteractive adaptations in cultivated crops.
Chang, Geoffrey   +6 more
core   +3 more sources

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