e, Tof-SIMS depth profile of various secondary ion species obtained by sputtering the recharged cathode, indicating the decomposition of CaO2 in the charge process. f, Tof-SIMS two-dimensional view images of CaO2− from the recharged cathode showing the decomposition of CaO2. Extended Data ...
A highly conserved calcium-binding domain, comprising two helices (E and F after the fifth and sixth helices of parvalbumin) that are linked by a short acidic calcium-binding loop that coordinates the calcium ion in a pentagonal bipyramidal arrangement. EF hands are found in many calcium-binding...
For a single ion, the equilibrium potential E can be computed easily. The flow of ions into the cell is proportional to the concentration outside the cell while the flow out is proportional to the concentration inside. The energy difference between an ion of charge q outside and inside the...
Summary The electric charge stoichiometry of calcium ion transport into respiring mitochondria has been measured, using H+- and Ca2+-sensitive electrodes to determine the number of H+ ions ejected in electroneutral exchange for Ca. In three types of system the ratio H+ ejected/Ca2+ taken up ...
Binding of calcium ion to calcium-binding proteins (CBP) triggers a large number of biological processes in a cell. CBP are known to play important roles in various diseases, such as cancer, alzheimer, and neuronal problems. However, the calculation of the binding affinity of calcium ion to ...
Multivalent ligands of ion channels have proven to be both very rare and highly valuable in yielding unique insights into channel structure and pharmacology. Here, we describe a bivalent peptide from the venom of Xibalbanus tulumensis, a troglobitic arth
(2 g L−1) to the culture medium significantly increased the resistance of the microbe against the bacteriocin, and it was concluded that this effect was attributed to the Ca2+ions, that masked negative charges of cell wall constituents and thus prevented binding of nisin. Although,C. ...
The approach was controlled by monitoring the resistance, similar to that used in scanning ion conductance microscopy39. The pipette stopped when the pipette resistance dropped by 1%, that indicated that the tip is <100 nm from the bottom, within a TIRF illumination layer. The stationary ...
The interlayer space present between the chains permits ion exchange with the pore solution, which allows some degree of charge balancing by alkali cations and can cause local differences in the environments of the silicon species (Hong and Glasser, 1999; Bernal et al., 2014; Walkley and Provis...
These compounds are of fonnula (1) and exhibit calcium ion channel blocking activity. C. Reduction of CO in X1. The compounds prepared in paragraph B were dissolved in dry THF (5 ml) and * reacted with LiAlH4 (M in THF) and allowed to react for 6 h. The reactions were quenched...