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2 The role of Ca+ as an internal messenger in visual transduction of vertebrate and invertebrate organisms has been explored intensely in the recent past. Since the 2 early 1970s, calcium ions and cyclic GMP (whose levels are controlled by Ca+ in vertebrates) have been recognized as important second messengers. Particularly in 2 the last decade, however, the role of Ca+ in visual transduction has been re-evalu ated and a proliferation of research has documented a multiplicity of roles. 2 It is now evident that Ca+ modulates phototransduction by acting at several 2 sites through a host of small Ca+ -binding proteins. For example, in phototransduction 2 of vertebrates, Ca+-free forms of guanylate cyclase activating proteins (GCAPs) activate guanylate cyclase, modulating levels of cOMP, a key event in the return of photoreceptors to pre-bleach conditions. Defects in genes encoding guanylate cy clase or guanylate cyclase activating proteins lead to severe diseases of the retina (e. g. , Leber congenital amaurosis, rod/cone dystrophy, or cone dystrophy), thus em phasizing the important role of these proteins in phototransduction. Similarly, mu 2 tant genes encoding cation or Ca+ channels (cyclic nucleotide-gated cation chan 2 nels located in the cell membrane and L-type voltage-gated Ca+ channels located at the synapse of photo receptors) lead to retinitis pigmentosa or congenital stationary night blindness. In phototransduction of invertebrate organisms (e. g. , Drosophila 2 and Limulus), the role of Ca+ is similarly central, but distinct, from that of vertebrates.
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- PublisherSpringer
- Publication date2003
- ISBN 10 0306474158
- ISBN 13 9780306474156
- BindingHardcover
- Number of pages653
- EditorBaehr Wolfgang, Palczewski Krzysztof
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Photoreceptors and Calcium [Advances in Experimental Medicine and Biology, Volume 514]
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Landes Bioscience, Georgetown, TX / Kluwer Academic/Plenum Publishers, New York.
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Book Description Hardcover. Condition: New. 8vo, hardcover, no dj. NEW. Contents bright, crisp & clean, binding tight. xxiv, 625 p., illus. (some color). Seller Inventory # 1120204.56
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Book Description Gebunden. Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. 1. Calcium and Phototransduction K. Nakatani, et al. 2. The Calcium Gradient Along the Rod Outer Segment K.N. Leibovic. 3. The Time Course of Light Adaptation in Vertebrate Retinal Rods P.D. Calvert, C.L. Makino. 4. S-Modulin S. Kawamura, S. Tachiba. Seller Inventory # 5903485
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Book Description Buch. Condition: Neu. Druck auf Anfrage Neuware - Printed after ordering - 2 The role of Ca+ as an internal messenger in visual transduction of vertebrate and invertebrate organisms has been explored intensely in the recent past. Since the 2 early 1970s, calcium ions and cyclic GMP (whose levels are controlled by Ca+ in vertebrates) have been recognized as important second messengers. Particularly in 2 the last decade, however, the role of Ca+ in visual transduction has been re-evalu ated and a proliferation of research has documented a multiplicity of roles. 2 It is now evident that Ca+ modulates phototransduction by acting at several 2 sites through a host of small Ca+ -binding proteins. For example, in phototransduction 2 of vertebrates, Ca+-free forms of guanylate cyclase activating proteins (GCAPs) activate guanylate cyclase, modulating levels of cOMP, a key event in the return of photoreceptors to pre-bleach conditions. Defects in genes encoding guanylate cy clase or guanylate cyclase activating proteins lead to severe diseases of the retina (e. g. , Leber congenital amaurosis, rod/cone dystrophy, or cone dystrophy), thus em phasizing the important role of these proteins in phototransduction. Similarly, mu 2 tant genes encoding cation or Ca+ channels (cyclic nucleotide-gated cation chan 2 nels located in the cell membrane and L-type voltage-gated Ca+ channels located at the synapse of photo receptors) lead to retinitis pigmentosa or congenital stationary night blindness. In phototransduction of invertebrate organisms (e. g. , Drosophila 2 and Limulus), the role of Ca+ is similarly central, but distinct, from that of vertebrates. Seller Inventory # 9780306474156
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Book Description Buch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -2 The role of Ca+ as an internal messenger in visual transduction of vertebrate and invertebrate organisms has been explored intensely in the recent past. Since the 2 early 1970s, calcium ions and cyclic GMP (whose levels are controlled by Ca+ in vertebrates) have been recognized as important second messengers. Particularly in 2 the last decade, however, the role of Ca+ in visual transduction has been re-evalu ated and a proliferation of research has documented a multiplicity of roles. 2 It is now evident that Ca+ modulates phototransduction by acting at several 2 sites through a host of small Ca+ -binding proteins. For example, in phototransduction 2 of vertebrates, Ca+-free forms of guanylate cyclase activating proteins (GCAPs) activate guanylate cyclase, modulating levels of cOMP, a key event in the return of photoreceptors to pre-bleach conditions. Defects in genes encoding guanylate cy clase or guanylate cyclase activating proteins lead to severe diseases of the retina (e. g. , Leber congenital amaurosis, rod/cone dystrophy, or cone dystrophy), thus em phasizing the important role of these proteins in phototransduction. Similarly, mu 2 tant genes encoding cation or Ca+ channels (cyclic nucleotide-gated cation chan 2 nels located in the cell membrane and L-type voltage-gated Ca+ channels located at the synapse of photo receptors) lead to retinitis pigmentosa or congenital stationary night blindness. In phototransduction of invertebrate organisms (e. g. , Drosophila 2 and Limulus), the role of Ca+ is similarly central, but distinct, from that of vertebrates. 656 pp. Englisch. Seller Inventory # 9780306474156
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