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1 VSD binding enhances secretion in vivo subject to voltag
2 VSD charge displacements within the membrane electric fi
3 VSD imaging may thus be a promising technique to trace T
4 VSD IV did not appear to participate in channel opening.
5 VSD-to-PD coupling is not fully explained by far connect
6 VSDs consist of four transmembrane segments, S1-S4, form
7 VSDs sense changes in the transmembrane voltage and conv
8 ong molecular dynamics simulations of Kv 1.2-VSD in LPPG micelles and a 1-palmitoyl-2-oleoyl-glycero-
9 1 may strengthen the coupling between hKv1.3-VSD movement and pore opening, inducing the modification
10 rth transmembrane helix (S4) of the Na(V)1.4 VSDs can result in a leak current through the VSD and hy
13 lividans) as a surrogate because it lacks a VSD and exhibits an activation coupled to C-type inactiv
14 itial step that makes the resting state of a VSD accessible to a variety of biophysical and structura
15 ly independent but biased by VSD activation, VSDs II and III were each found to supply approximately
16 subject to voltage, and mutations affecting VSD conformation alter binding and secretion in parallel
17 ange in exercise function was observed after VSD closure, except for increased peak oxygen (O(2)) pul
23 cutaneous MCS normalized hemodynamics in AMI-VSD, pulmonary capillary wedge pressure and shunting wer
25 lidated cardiovascular model to simulate AMI-VSD with parameters adjusted to replicate average hemody
27 n and 89 children at MSMC undergoing ASD and VSD closure, respectively, were compared with 3103 ASD a
28 n costs fell by 33% and 35% at MSMC (ASD and VSD, respectively), whereas they rose by 16% to 17% nati
30 getic interaction between Ca(2+) binding and VSD activation by investigating the effects of internal
31 ltage dependence of both channel opening and VSD activation, reported by a fluorophore labeling posit
32 ures during the third month of pregnancy and VSD in two pollution model.Our results contribute to the
34 n of the voltage dependence of the available VSD structures, at present, they all represent the activ
35 ally highly significant correlations between VSD function and physicochemical properties of gating po
36 al underpinnings of the relationship between VSD movement and fluorophore response remain unclear.
38 ence of membrane potential, toxins that bind VSD and modulate the gating behavior of K(v) channels ex
39 g is intrinsically independent but biased by VSD activation, VSDs II and III were each found to suppl
40 -dependent gating of K(V)7.1 as triggered by VSD activations to the intermediate and then activated s
41 fferent mechanisms, other than the canonical VSD-pore coupling, are at work in voltage-dependent ion
42 in (VSD) with strong similarity to canonical VSDs in voltage-dependent cation channels and enzymes.
43 tion of the structure of a potassium channel VSD in the intermediate state has previously proven elus
45 bset of plant SNAREs commandeer K(+) channel VSDs to coordinate membrane trafficking with K(+) uptake
46 pollutant model, associations with all CHDs, VSD, and TF for O3 were generally consistent compared to
49 relaxation EPR spectroscopy measurement, Ci-VSD reconstitutes essentially randomly in proteoliposome
52 oltage dependence of the VSD from Ci-VSP (Ci-VSD) is dramatically right shifted, so that at 0 mV it p
53 like VGKC show domain-swapped configuration: VSD of one subunit is covalently connected to its PD by
59 Transcatheter ventricular septal defect (VSD) closure is a safe and efficacious alternative to su
61 defect (ASD) and ventricular septal defect (VSD) surgeries in children 2 months to 19 years of age a
62 sed risk of CHDs, ventricular septal defect (VSD), and tetralogy of fallot (TF) with increasing O3 ex
67 % penetrance and ventricular septal defects (VSDs) with ~15% penetrance; Fz2(+/-);Fz7(-/-) mice exhib
68 termed muscular ventricular septal defects (VSDs), are common, yet less is known about how they aris
69 dition, the stabilization of the depolarized VSD conformation, a hallmark for most Kv channels, requi
72 utations slowed INa activation, although DII-VSD activation occurred at higher potentials (A735V) or
75 current activation, indicating that the DII-VSD allosterically regulates the rate of INa activation
77 acellular media within the DI, DII, and DIII VSDs are approximately 2 A long, similar to those of K(v
81 conformational changes within the 4 (DI-DIV) VSDs to define molecular mechanisms of NaV1.5 modulation
83 g a proton-permeable voltage-sensing domain (VSD) and lacking the pore domain typical of other voltag
84 ardiac Na(+) channel voltage-sensing domain (VSD) conformational dynamics simultaneously with other g
87 1 interacts with the voltage sensing domain (VSD) of Kv1.3 through W172 in the transmembrane segment
88 the structure of the voltage-sensing domain (VSD) of the Kv1.2 potassium channel in the resting state
91 the S4 helix of the voltage-sensing domain (VSD) that are displaced in response to changes in transm
92 (K(V)) channels, the voltage-sensing domain (VSD) undergoes sequential activation from the resting st
93 are carried out by a voltage-sensing domain (VSD) with strong similarity to canonical VSDs in voltage
94 al models of the Hv1 voltage-sensing domain (VSD), both in a hyperpolarized state and a depolarized s
95 the CNBD and channel voltage sensing domain (VSD), possibly acting as a sliding crank that converts t
96 ractions between the voltage-sensing domain (VSD), the Ca(2+)-binding sites, and the pore domain gove
97 teractions among the voltage sensing domain (VSD), the cytosolic domain (CTD), and the pore gate doma
98 main surrounded by a voltage-sensing domain (VSD), which is critical for sensing transmembrane potent
103 nzymes regulated by a voltage-sensor domain (VSD) related to the VSD found in voltage-gated ion chann
104 unit is composed of a voltage sensor domain (VSD), a central pore-gate domain, and a large cytoplasmi
105 the membrane-spanning voltage sensor domain (VSD), and the cNMP-dependent gating is mediated by the i
106 Gating charges in voltage-sensing domains (VSD) of voltage-sensitive ion channels and enzymes are c
110 whereby the NaV1.5 voltage-sensing domains (VSDs) are perturbed to pathologically or therapeutically
111 hanges of the KCNQ3 voltage-sensing domains (VSDs) in response to voltage, retigabine, and PIP2.
112 potential via their voltage-sensing domains (VSDs) that control the status of the S6 bundle crossing
113 It contains four voltage-sensing domains (VSDs) that regulate the opening of the pore domain and e
116 x consisting of two voltage-sensing domains (VSDs), each containing a gated proton permeation pathway
117 t is a dimer of two voltage-sensing domains (VSDs), each containing a pore pathway, a voltage sensor
121 movement of all four voltage sensor domains (VSDs) followed by channel opening via a last concerted c
122 induce pores in the voltage-sensor domains (VSDs) of different VGICs and that these pores form more
123 membrane, binds the voltage sensor domains (VSDs) of K(+) channels to confer a voltage dependence on
125 ion channels feature voltage sensor domains (VSDs) that exist in three distinct conformations during
126 The S4 helix of voltage sensor domains (VSDs) transfers its gating charges across the membrane e
127 the channels include voltage-sensor domains (VSDs), their conductance is thought to be independent of
128 d of four homologous voltage sensor domains (VSDs; DI, DII, DIII, and DIV) in which their S4 segments
130 lation and wide-scale voltage sensitive dye (VSD) imaging in mice to map altered cortical connectivit
131 tials, we developed a voltage-sensitive dye (VSD) imaging technique based on a double-sided microscop
132 near-infrared cyanine voltage-sensitive dye (VSD) imaging, which visualizes membrane potential variat
133 optical imaging with voltage-sensitive dye (VSD) in an animal experimental setting using anaesthetiz
136 wever, the available voltage-sensitive dyes (VSDs) are not always spectrally compatible with newly av
143 network as a whole, scaling the ChR2-evoked VSD responses from the stroke groups to match the sham g
144 % penetrance; Fz2(+/-);Fz7(-/-) mice exhibit VSDs with ~50% penetrance and cleft palate with less tha
145 est that gating in Hv1 is tuned by extensive VSD-VSD interactions between the gates and voltage senso
146 Here, we describe a series of 19 fluorinated VSDs based on the hemicyanine class of chromophores.
149 voltage sensors, we discovered that the four VSDs of CaV1.2 channels undergo voltage-evoked conformat
150 ural model of the resting states of the four VSDs of Na(v)1.4 relaxed in their membrane/solution envi
152 of the hyperpolarized state of a functioning VSD and also a framework for understanding the dynamics
153 indings indicate that an intact alphaB helix/VSD interface is required for effective coupling of Ca(2
154 hich act as open channel blockers on the Hv1 VSD and find that a highly conserved phenylalanine in th
155 nidinothiazole derivatives block the two Hv1 VSDs in a cooperative way, and use one of the compounds
156 ically charged residues across a hydrophobic VSD constriction called the gating pore or hydrophobic p
157 c transport measurements of the interlayer I-VSD characteristics indicate that layer-indirect e-h pai
158 e altered the conformation of the Domain III VSD, which is the same VSD that many tested LQT3 mutatio
159 ion between the activation of the Domain III-VSD and the strength of the inhibition of the channel by
162 n = 10), we collected spontaneous changes in VSD signal that reflect underlying membrane potential ch
163 demonstrate that poration is more likely in VSDs that are more hydrated and are electrostatically mo
166 repair of conotruncal anomalies, intramural VSDs are uniquely associated with postoperative morbidit
172 olecular dynamics simulation of the isolated VSD from the KvAP channel in a hydrated lipid bilayer on
174 hat a conformational change in the domain IV VSD after depolarization is necessary and sufficient to
175 n maximum of NBD-labeled loop region of KvAP-VSD (residues 110-117) suggests a significant change in
176 ddle motif in activated conformation of KvAP-VSD by site-directed fluorescence approaches, using the
178 ty of I287 are important to control the main VSD energy barrier underlying transitions between restin
189 to voltage and the photostability of the new VSDs in a series of experimental preparations ranging in
193 tcome compared with those with nonintramural VSDs or no residual VSD (14 of 49 [29%] versus 15 of 207
194 stay compared with those with nonintramural VSDs or no residual VSD (20 days [interquartile range, 1
195 Our findings suggest the applicability of VSD imaging for real-time, functional imaging guidance d
196 its, probably result from the enhancement of VSD function, as demonstrated by optically tracking VSD
197 utated subunits points to an independence of VSD movements, with each subunit incrementally contribut
200 fast kinetic components in the activation of VSDs II and III were compatible with the ionic current p
201 a, Wnt5a or Wnt11, an increased frequency of VSDs is observed with Dvl3, Wnt3a and Wnt11; an increase
202 le to overcome the inherent lipophilicity of VSDs by dynamic encapsulation and high-affinity ligands
204 (2+) sensor occupancy has a strong impact on VSD activation through a coordinated interaction mechani
207 charge, thereby confirming that the reported VSD structure is likely an intermediate along the channe
210 those with nonintramural VSDs or no residual VSD (14 of 49 [29%] versus 15 of 207 [7%] versus 6 of 18
211 those with nonintramural VSDs or no residual VSD (20 days [interquartile range, 11-42 days] versus 7
213 cellular caged Ca(2+), we optically resolved VSD activation prompted by Ca(2+) binding to the gating
217 tage-activated ion channels, voltage sensor (VSD) activation induces pore opening via VSD-pore coupli
218 potassium channels (VGKC), voltage sensors (VSD) endow voltage-sensitivity to pore domains (PDs) thr
220 ere are clear differences between the Shaker-VSD and Kv1.2/2.1 chimera in the S2-S3 linker and S3 tra
222 d from shift (TALOS+) showed that the Shaker-VSD shares many structural features with the homologous
225 ith the consensus model of the resting state VSD and the spin-spin distance histograms from ESR/DEER
229 val up to 40 years after successful surgical VSD closure is slightly lower than in the general Dutch
233 ocally, mutations in the Slo1 that alter the VSD-CTD interaction can specifically change the effects
234 teract with the VSD or the CTD and alter the VSD-CTD interface of the Slo1, which enables the beta su
237 d how the interdomain interactions among the VSD, CTD, and PGD are altered by the beta subunits to af
238 disrupt the disulfide bond formation at the VSD-CTD interface of mouse Slo1, indicating that the bet
240 a putative binding site located between the VSD and the TRP box, disclosing differences in the bindi
241 In conclusion, our data reveal that both the VSD and the lipid phosphatase domain of Mm-VSP are funct
242 tilized NMR spectroscopy to characterize the VSD derived from Shaker potassium channel in 1-palmitoyl
243 ker K(+) channel's pore domain (PD) from the VSD prevented the mode-shift of the gating currents.
245 ward displacement, leading to changes in the VSD internal salt-bridge network, resulting in a reshapi
246 The location of the activation gate in the VSD is unknown and open channel blockers for VSDs have n
250 nd fourth (S4) transmembrane segments of the VSD alters the equilibrium between resting and active co
251 ated at positions located in the core of the VSD and apply mutant cycle analysis to determine how the
252 To address whether the functions of the VSD and phosphatase domain are retained in Mm-VSP, we to
256 This work illuminates the structure of the VSD intermediate state and demonstrates that intermediat
257 cantly perturb the voltage dependence of the VSD movement, suggesting a unique voltage sensing mechan
259 nalysis of transient sensing currents of the VSD revealed distinct roles for the N-terminal (M240-S24
260 (237) and Gly(239) residues on the S2 of the VSD that form direct interactions with Ile(135) on the H
261 ydrophobic plug that seals the center of the VSD, as suggested by molecular dynamics simulations.
262 re for the resting state conformation of the VSD, in agreement with experiments showing that the larg
263 hin the VSD and with an inherent bias of the VSD, when hydrated around a central Phe residue, to the
264 derives from the different mechanisms of the VSD-pore coupling that lead to the IO and AO states, res
265 diate state, the hand-like C-terminus of the VSD-pore linker (S4-S5L) interacts with the pore in the
270 termediate state to the activated state, the VSD-pore coupling has less efficacy in opening the pore,
271 s, known as omega-currents, pass through the VSD and are distinct from K(+) currents passing through
272 SDs can result in a leak current through the VSD and hypokalemic periodic paralysis (HypoPP), but the
273 n activation, outward S4 motion tightens the VSD-pore linker, perturbing linker-S6-helix packing.
276 The Mm-VSP phosphatase domain, fused to the VSD of a nonmammalian VSP, was also functional: activati
278 at the pore in KCNQ1 channels opens when the VSD activates to both intermediate and fully activated s
279 ch that a beta subunit may interact with the VSD or the CTD and alter the VSD-CTD interface of the Sl
280 hydration of amino acid residues within the VSD and with an inherent bias of the VSD, when hydrated
282 tribution of an interface formed between the VSDs and the alphaB helices located at the top of the CT
284 s of the first transmembrane segments of the VSDs form the intersubunit interface that mediates coupl
288 -sensitive KCNQ channels that contributes to VSD-pore coupling via PIP2, and thereby influences the u
289 ivation of Hv1 involves a process similar to VSD relaxation, a process previously described for volta
290 results are relevant for understanding toxin-VSD interaction and gating mechanisms of K(v) channels i
291 ction, as demonstrated by optically tracking VSD depolarization-evoked conformational rearrangements.
292 echocardiography 1 day before transcatheter VSD closure and 6 months after intervention (closure gro
293 with conservative management, transcatheter VSD closure prevents deterioration in exercise capacity
295 from the closed to the open state in the two VSDs are known to occur cooperatively; however, the unde
296 of the length of the S3-S4 linker in various VSD-containing proteins may produce differential VSD rel
298 tructures, its transplantation in the Ci-VSP VSD scaffold yielded similar results as the native Ci-VS
300 ast intracortical inhibition detectable with VSD imaging, indicated weakened inhibition as an importa