G-protein coupled receptor kinase-like immunoreactivity in the snail, Helix pomatia, neurons

We investigated the role of the mobility of acetylcholine receptors in the depression of an acetylcholine-induced inward current (ACh-current) of Helix lucorum (a land snail) command neurons of defensive behavior in a cellular analog of habituation. The inhibitors of endocytosis and exocytosis, actin microfilaments and cytoskeleton microtubules, serine/threonine protein kinases (PKA, PKG, calcium calmodulin-dependent PK II, p38 mitogen-activated PK), tyrosine kinases (including Src-family kinases), serine/threonine phosphatases (PP1, PP2A, PP2B, PPM1D), and tyrosine protein phosphatases altered the depression of the ACh-current. A comparison of experimentally calculated curves of the ACh-current of these neurons and those obtained by mathematical modeling revealed the following: (a) ACh-current depression is caused by the reduction in the number of membranous ACh-receptors, which results from the shift in the balance of multidirectional transport processes of receptors toward the predominance of ACh-receptor internalization over their recycling; (b) depression of ACh-current depends on the activity of serine/threonine and tyrosine protein kinases and protein phosphatases, whose one of the main targets is the neuron transport system-actin microfilaments and microtubules of cytoskeleton, as well as motor proteins.

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Mobility of acetylcholine receptors in command Helix lucorum neurons in a cellular analog of habituation

Pivovarov

Murzina

Makhnovsky

et al. 2013

Invert Neurosci

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G-protein coupled receptor kinase-like immunoreactivity in the snail, Helix pomatia, neurons

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Mobility of acetylcholine receptors in command Helix lucorum neurons in a cellular analog of habituation

Mobility of acetylcholine receptors in command Helix lucorum neurons in a cellular analog of habituation

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