Results 51 to 60 of about 35,245 (228)

μ-calpain binds to lipid bilayers via the exposed hydrophobic surface of its Ca2+-activated conformation [PDF]

, 2006
μ- and m-calpain are cysteine proteases requiring micro- and millimolar Ca2+ concentrations for their activation in vitro. Among other mechanisms, interaction of calpains with membrane phospholipids has been proposed to facilitate their activation by ...
Fernández-Montalván, Amaury, Assfalg-Machleidt, Irmgard, Pfeiler, Dietmar, Fritz, Hans, Jochum, Marianne, Machleidt, Werner   +5 more
core   +2 more sources

Synaptotagmins: That’s Why So Many [PDF]

Neuron, 2017
Synaptotagmin 7 (Syt7) was originally identified as a slow Ca2+ sensor for lysosome fusion, but its function at fast synapses is controversial. The paper by Luo and Südhof (2017) in this issue of Neuron shows that at the calyx of Held in the auditory brainstem Syt7 triggers asynchronous release during stimulus trains, resulting in reliable and ...
Chong, Chen, Peter, Jonas
openaire   +2 more sources

Analysis of tripartite Synaptotagmin‐1‐SNARE‐complexin‐1 complexes in solution

FEBS Open Bio, 2023
Characterizing interactions of Synaptotagmin‐1 with the SNARE complex is crucial to understand the mechanism of neurotransmitter release. X‐ray crystallography revealed how the Synaptotagmin‐1 C2B domain binds to the SNARE complex through a so‐called ...
Klaudia Jaczynska, Luis Esquivies, Richard A. Pfuetzner, Baris Alten, Kyle D. Brewer, Qiangjun Zhou, Ege T. Kavalali, Axel T. Brunger, Josep Rizo   +8 more
doaj   +1 more source

Drosophila studies support a role for a presynaptic synaptotagmin mutation in a human congenital myasthenic syndrome.

PLoS ONE, 2017
During chemical transmission, the function of synaptic proteins must be coordinated to efficiently release neurotransmitter. Synaptotagmin 2, the Ca2+ sensor for fast, synchronized neurotransmitter release at the human neuromuscular junction, has ...
Mallory C Shields, Matthew R Bowers, McKenzie M Fulcer, Madelyn K Bollig, Patrick J Rock, Bryan R Sutton, Alysia D Vrailas-Mortimer, Hanns Lochmüller, Roger G Whittaker, Rita Horvath, Noreen E Reist   +10 more
doaj   +1 more source

Implication of synaptotagmins 4 and 7 in activity-dependent somatodendritic dopamine release in the ventral midbrain

Open Biology, 2022
Dopamine (DA) neurons can release DA not just from axon terminals, but also from their somatodendritic (STD) compartment through a mechanism that is still incompletely understood. Using voltammetry in mouse mesencephalic brain slices, we find that STD DA
Benoît Delignat-Lavaud, Charles Ducrot, Willemieke Kouwenhoven, Nina Feller, Louis-Éric Trudeau   +4 more
doaj   +1 more source

Positively Correlated miRNA-miRNA Regulatory Networks in Mouse Frontal Cortex During Early Stages of Alcohol Dependence [PDF]

, 2013
Although the study of gene regulation via the action of specific microRNAs (miRNAs) has experienced a boom in recent years, the analysis of genome-wide interaction networks among miRNAs and respective targeted mRNAs has lagged behind.
Blednov, Yuri A., Gorini, Giorgio, Harris, R. Adon, Mayfield, R. Dayne, Nunez, Yury O., Ponomareva, Olga N., Truitt, Jay M.   +6 more
core   +2 more sources

Temporal and Cell‐Specific Regulation of Synaptic Homeostasis by the Chromatin Remodeler Chd1

Advanced Science, EarlyView.
Chd1, the Drosophila homologue of mammalian CHD2 ‐ a gene linked to autism, epilepsy, and intellectual disability, is required for synaptic homeostatic plasticity. Chd1 in glia is necessary for the rapid induction of synaptic homeostasis, whereas Chd1 in motoneurons, muscle, and glia is critical for long‐term maintenance.
Danielle T. Morency, Tao Cui, Yimei Cai, Chloe Lok, Rachel E. Nokku, Ruoxian Huang, Grace L. Chu, Yumeng Xie, Saleem W. Abu‐Tayeh, Kaikai He, Chengjie Qiu, Junyi Wang, Paxton M. Paganelli, Ting Wang, Gabrielle Williams, Sreejith Nair, Huadong Pei, Dion K. Dickman, Stefano Vicini, Tingting Wang   +19 more
wiley   +1 more source

A Central Somatic Transmission Mediates Proprioceptive Facilitation of Muscle Pain

Advanced Science, EarlyView.
Zhang et al. uncover a novel central mechanism for persistent muscle pain, in which TRPA1 sensitization in MeV proprioceptive neurons enhances somatic secretion. This, in turn, disinhibits descending pain control from neighboring noradrenergic locus coeruleus neurons via local GABAergic circuits, thereby promoting inflammatory muscle pain.
Xiaoyu Zhang, Jiale Yang, Xi Wu, Jie Li, Fujian Lu, Yiman Li, Xingyu Du, Rong Huang, Jamila Asgar, Jing Wang, Ke Ren, Feipeng Zhu, Changhe Wang, Yehua Gan, Feng Wei, Zhuan Zhou   +15 more
wiley   +1 more source

Synaptotagmin-1 and Synaptotagmin-7 Trigger Synchronous and Asynchronous Phases of Neurotransmitter Release [PDF]

Neuron, 2013
In forebrain neurons, knockout of synaptotagmin-1 blocks fast Ca(2+)-triggered synchronous neurotransmitter release but enables manifestation of slow Ca(2+)-triggered asynchronous release. Here, we show using single-cell PCR that individual hippocampal neurons abundantly coexpress two Ca(2+)-binding synaptotagmin isoforms, synaptotagmin-1 and ...
Bacaj, Taulant, Wu, Dick, Yang, Xiaofei, Morishita, Wade, Zhou, Peng, Xu, Wei, Malenka, Robert C., Südhof, Thomas C.   +7 more
openaire   +2 more sources

Variations in the Botulinum Neurotoxin Binding Domain and the Potential for Novel Therapeutics

Toxins, 2018
Botulinum neurotoxins (BoNTs) are categorised into immunologically distinct serotypes BoNT/A to /G). Each serotype can also be further divided into subtypes based on differences in amino acid sequence. BoNTs are ~150 kDa proteins comprised of three major
Jonathan R. Davies, Sai Man Liu, K. Ravi Acharya   +2 more
doaj   +1 more source