Regulation of phototransduction responsiveness and retinal degeneration by a phospholipase D-generated signaling lipid.
Regulation of phototransduction responsiveness and retinal degeneration by a phospholipase D-generated signaling lipid.
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DOI:
10.1083/jcb.200502122
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发表时间:
2005-05-09
期刊:
影响因子:
--
通讯作者:
Frohman MA
中科院分区:
文献类型:
--
作者:
LaLonde MM;Janssens H;Rosenbaum E;Choi SY;Gergen JP;Colley NJ;Stark WS;Frohman MA
Drosophila melanogaster phototransduction proceeds via a phospholipase C (PLC)–triggered cascade of phosphatidylinositol (PI) lipid modifications, many steps of which remain undefined. We describe the involvement of the lipid phosphatidic acid and the enzyme that generates it, phospholipase D (Pld), in this process. Pld null flies exhibit decreased light sensitivity as well as a heightened susceptibility to retinal degeneration. Pld overexpression rescues flies lacking PLC from light-induced, metarhodopsin-mediated degeneration and restores visual signaling in flies lacking the PI transfer protein, which is a key player in the replenishment of the PI 4,5-bisphosphate (PIP2) substrate used by PLC to transduce light stimuli into neurological signals. Altogether, these findings suggest that Pld facilitates phototransduction by maintaining adequate levels of PIP2 and by protecting the visual system from metarhodopsin-induced, low light degeneration.
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影响因子:
16.2
作者:
Kiselev, A;Socolich, M;Ranganathan, R
通讯作者:
Ranganathan, R
DOI:
10.1083/jcb.138.3.495
发表时间:
1997-08-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
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通讯作者:
Shields D
影响因子:
4.4
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Beaven, MA
影响因子:
64.8
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Chyb, S;Raghu, P;Hardie, RC
通讯作者:
Hardie, RC
影响因子:
5.3
作者:
Hsu, CD;Whaley, MA;O'Tousa, JE
通讯作者:
O'Tousa, JE