Ion channels establish and regulate membrane potentials in excitable and non-excitable cells. How functional diversification of ion channels contributed to the evolution of nervous systems may be understood by studying organisms at key positions in the evolution of animal multicellularity. We have carried out the first analysis of ion channels cloned from a marine sponge, Amphimedon queenslandi...

In the title compound, K(3)[Cu(C(10)H(12)N(2)O(10)P)]·2H(2)O, the Cu(II) ion, one potassium cation and a P atom are situated on a twofold rotation axis. The Cu(II) ion is coordinated by two N and four O atoms from one bis-{[bis-(carboxyl-atometh-yl)amino]-meth-yl}phosphinate ligand in a distorted octa-hedral coordination geometry. The two crystallographically independent potassium ions exhibit ...

Dissociation kinetic analysis of a complex of Ce(3+) with a polyaminocarboxylic ligand, 8-amino-2-[(2-amino-5-methylphenoxyl)methyl]-6-methoxyquinoline-N,N,N',N',-tetraacetic acid (Quin2), was studied by microchip capillary electrophoretic reactor. Dissociation rate constants, k(d), of Ce(3+)-Quin2 complex in alkaline conditions at pH 8.3 - 9.8 were determined. The linear relationship of k(d) w...

In this work the ion-selective response of an electrolyte-gated carbon-nanotube field-effect transistor (CNT-FET) towards K(+), Ca(2+) and Cl(-) in the biologically relevant concentration range from 10(-1) M to 10(-6) M is demonstrated. The ion-selective response is achieved by modifying the gate-electrode of an electrolyte-gated CNT-FET with ion-selective membranes, which are selective towards...

The Na+/K+ pump is a ubiquitous P-type ATPase that binds three cytoplasmic Na+ ions deep within its core where they are temporarily occluded before being released to the extracellular surface. The 3Na+/2K+ -exchange transport cycle is completed when two extracellular K+ ions bind and become temporarily occluded within the protein and subsequently released to the cytoplasm. Coupling of Na+ -ion ...

Nowadays, secondary batteries based on sodium (Na), potassium (K), and magnesium (Mg) stimulate curiosity as eventually high-availability, nontoxic, eco-friendly alternatives of lithium-ion (LIBs). Against this background, a spate studies has been carried out over the past few years anode materials suitable for post-lithium-ion battery (PLIBs), in particular sodium-, potassium- magnesium-ion ba...

Studies of ion transport pathophysiology in hematological disorders and tests of possible new therapeutic agents for these disorders have been carried out in various mouse models because of close functional similarities between mouse and human red cells. We have explored strain-specific differences in erythrocyte membrane physiology in 10 inbred mouse strains by determining erythrocyte contents...