Results 31 to 40 of about 1,467,484 (303)

Coexistence of Ammonium Transporter and Channel Mechanisms in Amt-Mep-Rh Twin-His Variants Impairs the Filamentation Signaling Capacity of Fungal Mep2 Transceptors

open access: yesmBio, 2022
Ammonium translocation through biological membranes, by the ubiquitous Amt-Mep-Rh family of transporters, plays a key role in all domains of life. Two highly conserved histidine residues protrude into the lumen of the pore of these transporters, forming ...
Gordon Williamson   +10 more
doaj   +1 more source

Water and charge transport models in proton exchange membranes: An overview [PDF]

open access: yes, 2012
Recently, the significant role of water management in affecting the performance and durability of proton exchange membrane fuel cell (PEMFC) has been subjective to an intensive research to understand water transport phenomena which is marked by two ...
Ahmed Aly, Amgad   +1 more
core   +1 more source

Membrane transporters

open access: yesEuropean Journal of Pharmaceutical Sciences, 2000
Carrier-mediated drug transport is relatively unexplored in comparison with passive transcellular and paracellular drug transport. Yet, there is a host of transporter proteins that can be targeted for improving epithelial drug absorption. Generally, these are transport mechanisms for amino acids, dipeptides, monosaccharides, monocarboxylic acids ...
openaire   +2 more sources

THREE-DIMENSIONAL SIMULATIONS OF TRANSIENT RESPONSE OF PEM FUEL CELLS [PDF]

open access: yes, 2007
Transients have utmost importance in the lifetime and performance degradation of PEM fuel cells. Recent studies show that cyclic transients can induce hygro-thermal fatigue.
Yesilyurt, Serhat, Yeşilyurt, Serhat
core   +2 more sources

AQP3 and AQP5 Modulation in Response to Prolonged Oxidative Stress in Breast Cancer Cell Lines

open access: yesAntioxidants
Aquaporins are membrane pores regulating the transport of water, glycerol, and other small molecules across membranes. Among 13 human aquaporins, six have been shown to transport H2O2 and are therefore called peroxiporins.
Monika Mlinarić   +5 more
doaj   +1 more source

The Role of Mitochondrial NADPH-Dependent Isocitrate Dehydrogenase in Cancer Cells

open access: yesInternational Journal of Cell Biology, 2012
Isocitrate dehydrogenase 2 (IDH2) is located in the mitochondrial matrix. IDH2 acts in the forward Krebs cycle as an NADP+-consuming enzyme, providing NADPH for maintenance of the reduced glutathione and peroxiredoxin systems and for self-maintenance by ...
Katarína Smolková, Petr Ježek
doaj   +1 more source

Enzymatic hollow fiber membrane bioreactor for penicilin hydrolysis [PDF]

open access: yes, 2002
Continuous enzymatic reaction has been proven as an efficient technique for several industrial applications. In this study, a type of hollow fiber membrane bioreactor where penicillin acylase entrapped within membrane pores was applied to continuously ...
Wenten, I.G., Widiasa, I.N.
core   +1 more source

Transport of proteins into mitochondria [PDF]

open access: yes, 1985
Translocational intermediates of precursor proteins of ATPase F1β subunit and cytochrome c1 across mitochondrial membranes were analyzed using two different approaches, transport at low temperature and transport after binding of precursor proteins to ...
Neupert, Walter, Schleyer, Manfred
core   +1 more source

Routing of the RAB6 secretory pathway towards the lysosome related organelle of melanocytes

open access: yesNature Communications, 2017
The anterograde movement of Golgi-derived vesicles requires the small GTPase RAB6, while its effector ELKS targets these vesicles to particular areas of the plasma membrane.
Anand Patwardhan   +6 more
doaj   +1 more source

Reversal of end-stage heart failure in juvenile hemochromatosis with iron chelation therapy: a case report

open access: yesJournal of Medical Case Reports, 2018
Background Juvenile hemochromatosis is the most severe form of iron overloading phenotype. Although rare, it should be suspected in patients who present with hypogonadotropic hypogonadism, diabetes mellitus, or cardiomyopathy without a clear cause.
Shamil D. Cooray   +9 more
doaj   +1 more source

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