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• You can also read a paper (without figures) about the Diverse Molecular Mechanisms of Gap Junction Channel Gating by clicking here .
• STRUCTURAL COMPARISON of pH, PHOSPHORYLATION, and VOLTAGE GATING MECHANISMS of GAP JUNCTION CHANNELS.
• It has been proposed that voltage gating of gap junction channels is mediated by a propagated conformational change between transmembrane domains, from M1 (the proposed voltage sensor-Verseilis et al. ... , 1993), although this site seems to play little role in gating of Cx32 channels. Consistent with a role in directional propagation of a conformational change, the modified gating of Cx26 the P87L mutant is rescued (close to wt behavior) by reintroduction of the proline on exactly the same face of the M2 helix (7 residues to the C-terminus of the original position). ... We further provide evidence that the different effects of proline substitution in Cx32 and Cx26 reflect a fundamental difference in the gating mechanisms of connexins that respond to negative polarities of Vj (i. ...
• In contrast to the "global conformational change" implicated in voltage gating, pH and v-src induced closure of Cx43 channels appear to occur through discrete interactions between the C-terminal domain and the channel mouth (analagous to the "ball and chain" inactivation of K+ channels). ... In both types of gating, it appears that other factors are involved. In the case of v-src, direct phosphorylation and binding were not found to influence acute gating, which is in fact mediated by the indirect activation of MAPKinase. Consistent with addition of phosphates to the C-terminus being a trigger for the gating, we have now found that gating kinetics are voltage dependent. This has also allowed us to demonstrate that the kinetics of block are dependent on the concentration of the C-terminal domain when added as a separate peptide, providing definitive proof of the "ball and chain" mechanism of gating in gap. In the case of pH gating, we have utilized a perfused oocyte system to show that pH gating requires a heat sensitive accessory factor(s) present in the oocyte cytoplasm. Addition of a crude oocyte extract restores pH gating in the perfused system to the same sensitivity seen in intact cells.

• LV Council panel looks at gating of neighborhoods.
• A city of Las Vegas committee of two council members is to consider today an ordinance change that makes it easier for neighborhoods to take over their streets, something that Scotch 80s gating advocates have pushed since fall. ...
• Proponents of gating the neighborhood say it would make their streets quieter and safer, and relieve the city of the burden of maintaining the roadway. Why shouldn't residents be able to determine the fate of their neighborhood, they ask? They point to the success in gating Rancho Nevada in the early 1990s, the only time previously that a neighborhood has taken over its streets and shut itself off from traffic.
• She said one of her medical partners in practice lives in Rancho Nevada, where "the whole neighborhood is very happy about it (the gating in the early 1990s). ...
• Richard McKnight, a lawyer who lives in Rancho Nevada and helped that neighborhood become gated, is working on the Scotch 80s gating. ...
• He also said that only homeowners who opted into the original gating are charged. ...

• Re: Conflating Gate-Keeping with Toll-Gating.
• Next message: Stevan Harnad: "Re: Conflating Gate-Keeping with Toll-Gating" .
• Maybe in reply to: Stevan Harnad: "Conflating Gate-Keeping with Toll-Gating" .
• Next in thread: Stevan Harnad: "Re: Conflating Gate-Keeping with Toll-Gating" .
• toll-gating is that it does not address the practical problem faced by all .
• Next message: Stevan Harnad: "Re: Conflating Gate-Keeping with Toll-Gating" .
• Maybe in reply to: Stevan Harnad: "Conflating Gate-Keeping with Toll-Gating" .
• Next in thread: Stevan Harnad: "Re: Conflating Gate-Keeping with Toll-Gating" .

• Concerted Gating Mechanism Underlying KATP Channel Inhibition by ATP .
• At the single-channel current level, ATP-dependent gating transitions between the active burst and the inactive interburst conformations underlie inhibition of the KATP channel by intracellular ATP. Previously, we identified a slow gating mutation, T171A in the Kir6. ... Only four substitutions, 171A, 171F, 171H, and 171S, gave rise to functional channels, each increasing Ki,ATP for ATP inhibition by >55-fold and slowing gating to the interburst by >35-fold. ... 2 subunits in the gating by comparing burst to interburst transition rates of channels constructed from different combinations of slow 171A and fast T171 "wild-type" subunits. The relationship between gating transition rate and number of slow subunits is exponential, which excludes independent gating models where any one subunit is sufficient for inhibition gating. ...

• "Frequency-Resolved Optical Gating: The Measurement of Ultrashort Laser Pulses".
• FROG (Frequency Resolved Optical Gating) is a technique that completely characterizes an ultrashort laser pulse in time. ...

• Gating America.
• Along with the trend toward gating in new residential developments, existing neighborhoods are using barricades and gates with increasing frequency to seal themselves off. ...
• They seem to be more common in larger tracts, as there are more units over which to spread the cost of walling, gating, and constructing and staffing guardhouses. ...
• Gating is not a universal American phenomenon. ...
• Residents say crime decreased after the gating. ...
• They are gating themselves off, closing public streets with concrete or landscaped barriers, limiting entrance to just one or two electronically controlled gates. ...
• Whitley Heights continues to appeal, and two dozen previously approved gating proposals remain pending awaiting the result. ...
• The gating of existing and new residential developments has a profound impact on property values, both in the privatized neighborhood and in surrounding communities. ... In Dallas, lot values increased 25 percent due to gating. ...
• Gating also reduces traffic in a neighborhood, but cars too are merely diverted to other streets. ...

• FIREFLY FLASHING IS CONTROLLED BY GATING OXYGEN TO LIGHT-EMITTING CELLS .
• Here we examine the most postulated theory, that flashing is controlled by gating oxygen access to the light-emitting cells (photocytes). ... Thirdly, we provide constraints upon the distance between any gas-phase gating structure(s) and the photocytes. We conclude from these data that the flash of the adult firefly is controlled by gating of oxygen to the photocytes, and demonstrate that this control mechanism is likely to act by modulating the levels of fluid in the tracheoles supplying photocytes, providing a variable barrier to oxygen diffusion. ...
• Key words: bioluminescence, oxygen gating, light-emitting cell, photocyte, firefly, Photinus pyralis.

• Bat Gating Projects .
• The Indiana Division of Reclamation's Abandoned Mine Land (AML) Program has undertaken multiple bat gating projects in recent years. ... BCI was very instrumental in helping us properly design and implement our bat gating projects. ...
• This site consisted of three mine entrances that needed gating. ...

• Respiratory Gating for 3-Dimensional PET of the Thorax: Feasibility and Initial Results .
• This study was undertaken to assess the feasibility of respiratory gating for PET of the chest and the impact of respiratory motion on quantitative analysis. ... Three-dimensional studies were acquired with 8 gates per respiratory cycle on a commercial PET scanner with a temperature-sensitive respiratory gating device built in-house. ... Results: The respiratory gating device produced a consistent, reliable trigger signal. ... Conclusion: Respiratory gating of PET of the thorax and upper abdomen is a practical and feasible approach that may improve the detection of small pulmonary nodules. ...
• Key Words: motion correction • respiratory gating • 18F-FDG • PET.

• Expansion/Noise Gating.
• Why use Expansion/Noise Gating? .
• Why use Expansion/Noise Gating?.

•  Waveform recording firmware gains advanced gating.
• The latest SSR firmware for Acqiris' AP240 and AP235 dual-channel reconfigurable analyser platforms offers new "data gating" functions that further maximise event transfer rate.
• The latest version of the SSR firmware for Acqiris' AP240 and AP235 dual-channel reconfigurable analyser platforms offers new "data gating" functions that further maximise event transfer rate and that now allow the setting of pre- and post-markers to predefined threshold gates. ... In addition, the new SSR firmware "data gating" functions enable the user to precisely and exclusively record responses that exceed precise amplitudes, or that occur over specific times of interest, making the AP240 and AP235 extremely well suited for ultrasound, radar, lidar or other time-of-flight measurement applications. ... The firmware's smart "data gating" further maximises the event transfer rate, performing easy and effective data reduction, and rejecting unwanted information, while enhancing the maximum trigger rate. ...

• ADVANCED GATING TECHNIQUES : April 2001 .
• ADVANCED GATING TECHNIQUESAdvanced Gating Techniques Part 1Published in SOS April 2001 Printer friendly versionTechnique : Effects/Processing  .
• Part 1: Paul White explains that there's much more to gating than you might think.
• If this was all there was to gating then gates would not need anything more than a threshold control, yet a glance at a few different units will turn up all sorts of other controls, the action of which may not be immediately obvious. So, in the first part of this short series, I'll be explaining what all these controls do, and why you might need each of them to achieve the gating effect you require.
• A more progressive gating action allows decaying low-level sounds to fade more naturally rather than being cut off abruptly.
• The release time is certainly the most important parameter which needs setting after the gating threshold. ...
• At its fastest, an attack time of just a few tens of microseconds is typical, whereas sounds with a slower attack may respond better to gating with an attack time of 10mS or more.
• Up to this point we have only considered a gating action where the signal is completely muted below threshold. ...
• However, another lesser-known benefit of limited-range gating is that this can help the gate to open faster than it would if it were set to attenuate to silence — something that can be handy if you need a faster response than your attack-time control allows at its lowest setting. ...
• When gating stereo sound sources, it is necessary to have individual gain-control elements for each channel, and these need to have their actions synchronised to prevent one channel being processed differently to the other — the stereo image shifting that occurs if both channels operate independently is normally undesirable. ...
• By gating every vocal channel and feeding all key inputs from the channel with the best timing, you can often make a real improvement to the perceived quality of the performance.
• This technique is also popularly used to tighten up bass guitar tracks by gating them and feeding their key inputs with the kick drum — you can at least prevent the bass note from starting before the kick drum. ...
• Gates often have more controls than you might think they require but, as we've seen, each gating parameter is important to be able to get good results. ...

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