Titlebook: Sensory Transduction; Antonio Borsellino,Luigi Cervetto,Vincent Torre Book 1990 Plenum Press, New York 1990 Calcium.Glutamat.biophysics.ce

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Microvillar Photoreceptor Cells of Invertebrates delay, size and shape. The intensity dependence of the size of the macroscopic receptor current has a region of supralinear slope. The mechanisms of light/dark adaptation are better understood in photoreceptors of invertebrates than in those of vertebrates. Calcium is a desensitizing intracellular

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The Rhodopsin-Transducin-cGMP-Phosphodiesterase Cascade of Visual Transductionsubunit structure of the G-proteins, in the mechanisms of activation at the different steps of the cascades) have been documented: evolution seems to have conserved typical key structures. The visual system is however special in many respects: (i) rhodopsin is exceptionally abundant in the photorece

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Comparative Effects of Phosphodiesterase Inhibitors on Detached Rod Outer Segment Functionmbrane permeant phosphodiesterase inhibitor (Beavo et al., 1970; Capovilla et al., 1983; Hodgkin and Nunn, 1988). While such studies have provided useful information about the orchestration of transduction IBMX is not an ideal inhibitor. It is not very potent (K. = 1 × 10.M) which makes it practical

acquisition

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The Cytosolic Concentration of Free Ca2+ in Vertebrate Rod Outer Segmentsed by cGMP and are not blocked by calcium ions, being, perhaps, the most direct (see also Yau and Nakatani, 1985b). These channels have properties identical to those of the light-sensitive channels (Matthews, 1986).

impaction

Book 1990the detection of photons by visual cells, the recognition of a given molecule by a chemoreceptor, or the level of a hormone in the extracellular fluid by a target cell, are all very similar, and involve the activation of a sequence of events leading to a secon d messenger. The 20 papers that form th

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nderlying the detection of photons by visual cells, the recognition of a given molecule by a chemoreceptor, or the level of a hormone in the extracellular fluid by a target cell, are all very similar, and involve the activation of a sequence of events leading to a secon d messenger. The 20 papers that form th978-1-4684-5843-5978-1-4684-5841-1

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Interactions among Cations in Current Conduction through the Stretch-Activated Channel of the Frog O F. Sachs (Guharay and Sachs, 1984, 1985), and later on in many other structures (Hamill, 1983; Cooper et al., 1986; Methfessel et al., 1986; Yang et al., 1986; Falke et al., 1987; Gustin et al., 1987; Lansman et al., 1987; Ove, 1987). S.a. channels, unlike voltage- or chemically-activated channels,

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