3',5'-Cyclic Adenosine Monophosphate- and Ca2+-Calmodulin-Dependent Endogenous Protein Phosphorylation Activity in Membranes of the Bovine Chromaffin Secretory Vesicles: Identification of Two Phosphorylated Components as Tyrosine Hydroxylase and Protein Kinase Regulatory Subunit Type II [PDF]
: Membranes of the secretory vesicles from bovine adrenal medulla were investigated for the presence of the endogenous protein phosphorylation activity. Seven phosphoprotein bands in the molecular weight range of 250,000 to 30,000 were observed by means ...
Weber, W., Treiman, M., Gratzl, Manfred
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Activation of the mitochondrial protein OXR1 increases pSyn129 αSynuclein aggregation by lowering ATP levels and altering mitochondrial membrane potential, particularly in response to MSA‐derived fibrils. In contrast, ablation of the ER protein EMC4 enhances autophagic flux and lysosomal clearance, broadly reducing α‐synuclein aggregates.
Sandesh Neupane +11 more
wiley +1 more source
Nanoscale dynamics of synaptic vesicle trafficking and fusion at the presynaptic active zone
The cytomatrix at the active zone (CAZ) is a macromolecular complex that facilitates the supply of release-ready synaptic vesicles to support neurotransmitter release at synapses.
Thirumalini Vaithianathan +3 more
doaj +1 more source
Synaptic Transmission: Kinetics of synaptic-vesicle recycling [PDF]
The kinetics of different steps in synaptic-vesicle recycling, including exocytosis, internalization and repriming, have recently been estimated in various types of living cell.
Betz, William J., Wu, Ling-Gang
openaire +2 more sources
Counting the Number of Glutamate Molecules in Single Synaptic Vesicles
Analytical tools for direct quantitative measurements of glutamate, the principal excitatory neurotransmitter in brain, are lacking. Here, we introduce a new enzyme-based amperometric sensor technique for direct counting of the number of glutamate ...
Hoda, fathali +6 more
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Guiding AlphaFold to predict how Munc13‐1 opens Syntaxin‐1
The syntaxin‐1 Habc‐domain (orange), linker (pink) and SNARE motif (yellow) form a closed conformation that binds to Munc18‐1 (violet) and is opened by the Munc13‐1 MUN domain (cyan) to form the SNARE complex that triggers neurotransmitter release.
Madhurima Chattopadhyay +2 more
wiley +1 more source
Synaptic vesicle-omics in mice captures signatures of aging and synucleinopathy
Neurotransmitter release occurs through exocytosis of synaptic vesicles. α-Synuclein’s function and dysfunction in Parkinson’s disease and other synucleinopathies is thought to be tightly linked to synaptic vesicle binding. Age is the biggest risk factor
Virginia Gao +15 more
doaj +1 more source
ABSTRACT Objective Super‐Refractory Status Epilepticus (SRSE) is a rare, life‐threatening neurological emergency with unclear etiology in many cases. Mitochondrial dysfunction, often due to disease‐causing genetic variants, is increasingly recognized as a cause, with each gene producing distinct pathophysiological mechanisms.
Pouria Mohammadi +2 more
wiley +1 more source
Ultrastructural Correlates of Presynaptic Functional Heterogeneity in Hippocampal Synapses
Summary: Although similar in molecular composition, synapses can exhibit strikingly distinct functional transmitter release and plasticity characteristics.
Lydia Maus +9 more
doaj +1 more source
Synaptic Vesicles: An Organelle Comes of Age
Synaptic vesicles mediate the release of neurotransmitters at nerve terminals. In this issue of Cell, Takamori et al. (2006) analyze the lipid and protein components of synaptic vesicles, providing the most comprehensive description of synaptic vesicles ...
Südhof, Thomas C.
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