PKC-induced Sensitization of Ca2+-dependent Exocytosis Is Mediated by Reducing the Ca2+ Cooperativity in Pituitary Gonadotropes
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چکیده
منابع مشابه
PKC-induced Sensitization of Ca2+-dependent Exocytosis Is Mediated by Reducing the Ca2+ Cooperativity in Pituitary Gonadotropes
The highly cooperative nature of Ca2+-dependent exocytosis is very important for the precise regulation of transmitter release. It is not known whether the number of binding sites on the Ca2+ sensor can be modulated or not. We have previously reported that protein kinase C (PKC) activation sensitizes the Ca2+ sensor for exocytosis in pituitary gonadotropes. To further unravel the underlying mec...
متن کاملCooperativity in Pituitary Gonadotropes
The highly cooperative nature of Ca 2 -dependent exocytosis is very important for the precise regulation of transmitter release. It is not known whether the number of binding sites on the Ca 2 sensor can be modulated or not. We have previously reported that protein kinase C (PKC) activation sensitizes the Ca 2 sensor for exocytosis in pituitary gonadotropes. To further unravel the underlying me...
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AIM Neurotransmitter release is elicited by an elevation of intracellular Ca(2+) concentration ([Ca(2+)](i)). The action potential triggers Ca(2+) influx through Ca(2+) channels which causes local changes of [Ca(2+)](i) for vesicle release. However, any direct role of extracellular Ca(2+) (besides Ca(2+) influx) on Ca(2+)-dependent exocytosis remains elusive. Here we set out to investigate this...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 2005
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.200409230