IndraLab

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sparser
"Here, we determine how voltage activation of Kv2.1 interacts with inhibition by RY785."

sparser
"The relationship between GxTX-594 cell-surface fluorescence and Kv2.1 voltage activation."

sparser
"GxTx induces a depolarizing shift in the voltage-dependent activation of Kv2.1 with high potency and selectivity [IC 50 (half maximal inhibitory concentration): 0.71 nM ( xref )]."

sparser
"The hypothesis that cell-to-cell variation in fluorescence dynamics is due to the inherent variability of Kv2.1 voltage sensor activation could be more definitively tested by identifying whether a correlation exists between theV 1/2 of the QV and fluorescence–voltage relationship from individual cells labeled with GxTX-594."

sparser
"Voltage activation of Kv2.1 is also affected by sphingomyelinase treatments."

reach
"They reported that it suppresses the ion current in a concentration-dependent manner with IC50≈ 21 μM and shifts half-maximal voltage toward the higher potentials.The authors of the article [37] found that, similarly as in the case of Kv1.5 channels, quercetin can prevent the inhibition of the Kv2.1 currents in the pulmonary artery smooth muscle cells (PASMC) of rats pretreated with the monocrotaline.In [40], the authors studied the impact of licorice and isoliquiritigenin on IKur mediated by Kv2.1 expressed in H9c2 cells derived from rat cardiac myoblasts."

sparser
"While we were able to reliably integrate a fast component of ON gating charge movement, the final steps of Kv2.1 voltage activation are much slower, and these small gating currents were difficult to reliably differentiate from integration noise."

sparser
"Furthermore, it was reported that coexpression of stx1A reduced the surface expression of the voltage-activated potassium channel Kv2.1 ( xref ) but increased the surface expression of Kv1.1 ( xref )."

sparser
"As expected, voltage activation of rat Kv2.1 channels was required for the onset of RY785 inhibition, but Marquis and Sack found that recovery from inhibition is also voltage dependent: voltage activation of Kv2.1 channels speeds the restoration of K + currents after RY785 washout, whereas channels held at negative membrane potentials barely recover any conductance at all."

sparser
"Voltage-activated Kv2.1 channels have properties commensurate with a contribution to delayed rectifier currents and are expressed in neurones throughout the mammalian central nervous system."

sparser
"The voltage-activated K(+) channel subunit Kv2.1 can form heterotetramers with members of the Kv6 subfamily, generating channels with biophysical properties different from homomeric Kv2.1 channels."

sparser
"Thus any cellular functions, including K + current conduction, that depend on Kv2.1 voltage activation are expected to be blocked by GxTx."

reach
"Here, we determine how voltage activation of Kv2.1 interacts with inhibition by RY785.Two mechanisms that can create use dependence are allosteric modulation and gated access to a binding site."

sparser
"We find that voltage activation of Kv2.1 channels triggers GxTX dissociation, and thus GxTX binding dynamically marks Kv2 activation."

sparser
"We use voltage clamp spectroscopy (VCS) to collect full emission spectra of JP-GxTX conjugates as a function of membrane potential and find that they vary with labeling site on the toxin, the presence of Kv2 channels, and in response to Kv2.1 voltage activation."

reach
"As expected, voltage activation of rat Kv2.1 channels was required for the onset of RY785 inhibition, but Marquis and Sack found that recovery from inhibition is also voltage dependent: voltage activation of Kv2.1 channels speeds the restoration of K currents after RY785 washout, whereas channels held at negative membrane potentials barely recover any conductance at all.The simplest explanation for these observations is that voltage activation induces a conformational change in Kv2 channels that allows RY785 to access its binding site within the channel."

sparser
"Conversion of SM to C1P by a type-D SMase facilitated opening of the voltage-activated potassium channel Kv2.1 whereas conversion to Cer by a type-C SMase inhibited the opening, effects that may be ac[MISSING/INVALID CREDENTIALS: limited to 200 char for Elsevier]"

reach
"We conclude that AMIGO1 modulates the Kv2.1 conductance activation pathway by destabilizing the earliest resting state of the voltage sensors."

reach
"Voltage activation of Kv2.1 channel exhibited a sigmoidal time course 22 (Figure  3a), where there was an initial delay in macroscopic current upon depolarization (marked by red arrow)."

reach
"Conversion of SM to C1P by a type-D SMase facilitated opening of the voltage-activated potassium channel Kv2.1 whereas conversion to Cer by a type-C SMase inhibited the opening, effects that may be ac[MISSING/INVALID CREDENTIALS: limited to 200 char for Elsevier]"

reach
"Voltage activation of Kv2.1 is also affected by sphingomyelinase treatments."