Results 71 to 80 of about 534,194 (307)

Matrix-free calcium in isolated chromaffin vesicles [PDF]

, 1985
Isolated secretory vesicles from bovine adrenal medulla contain 80 nmol of Ca2+ and 25 nmol of Mg2+ per milligram of protein. As determined with a Ca2+-selective electrode, a further accumulation of about 160 nmol of Ca2+/mg of protein can be attained ...
Bashford L. C., Borowitz J. L., Borowitz J. L., Bradford M., Coll K. E., Debono M., Department of Biochemistry, Flodgaard H., Gratzl M., Grinstein S., Hansford R. G., Johnson R. G., Joseph S. K., Knight D. E., Krieger-Brauer H., Krieger-Brauer H., Krieger-Brauer H., Lowry O. H., MacLennan D. M., Nordmann J. J., Pfeiffer D. R., Pfeiffer D. R., Phillips J. H., Phillips J. H., Pollard B., Pollard B., Ravazzola M., Reed P. W., Reed P. W., Reinhart P. H., Saermark T., Saermark T., Serck-Hanssen G., Sillen L. G., Simon W., Wada A.   +35 more
core   +2 more sources

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

FEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes, Guilherme M. Azevedo, Amanda P. Barcellos, Diana Bahia   +3 more
wiley   +1 more source

The autophagic membrane tether ATG2A transfers lipids between membranes

eLife, 2019
An enigmatic step in de novo formation of the autophagosome membrane compartment is the expansion of the precursor membrane phagophore, which requires the acquisition of lipids to serve as building blocks.
Shintaro Maeda, Chinatsu Otomo, Takanori Otomo   +2 more
doaj   +1 more source

Synaptic proteins promote calcium-triggered fast transition from point contact to full fusion. [PDF]

, 2012
The molecular underpinnings of synaptic vesicle fusion for fast neurotransmitter release are still unclear. Here, we used a single vesicle-vesicle system with reconstituted SNARE and synaptotagmin-1 proteoliposomes to decipher the temporal sequence of ...
Brunger, Axel T, Chu, Steven, Cipriano, Daniel J, Diao, Jiajie, Grob, Patricia, Kyoung, Minjoung, Nguyen, Amie, Nogales, Eva, Padolina, Mark, Shah, Ankita, Shah, Sachi, Srivastava, Ankita, Vrljic, Marija, Zhang, Yunxiang   +13 more
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Importance of Lipid Composition in the Membrane Dynamics of Urothelial Umbrella Cells [PDF]

, 2014
The studies on membrane dynamics in urinary bladder umbrella cells were focused on proteins as important factors for maintaining the permeability barrier and their role as pathways modulators for the discoidal/fusiform endocytic vesicles which is one of ...
Grasso, Ernesto Javier
core  

Dynamical regimes and hydrodynamic lift of viscous vesicles under shear [PDF]

, 2009
The dynamics of two-dimensional viscous vesicles in shear flow, with different fluid viscosities $\eta_{\rm in}$ and $\eta_{\rm out}$ inside and outside, respectively, is studied using mesoscale simulation techniques. Besides the well-known tank-treading
Benjamin Schmidt, C. Pozrikidis, G. Gompper, Gerhard Gompper, Hiroshi Noguchi, J. L. M. Poiseuille, Sebastian Meßlinger, Y. C. Fung   +7 more
core   +2 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Identification of a synaptic vesicle-specific membrane protein with a wide distribution in neuronal and neurosecretory tissue. [PDF]

, 1981
Two different monoclonal antibodies, characterized initially as binding synaptic terminal regions of rat brain, bind a 65,000-dalton protein, which is exposed on the outer surface of brain synaptic vesicles. Immunocytochemical experiments at the electron
Matthew, WD, Reichardt, LF, Tsavaler, L
core   +2 more sources

The planar cell polarity protein Vangl2 interacts with the PDZ‐domains of Scribble but not with a unique PDZ‐like domain in Inturned

FEBS Letters, EarlyView.
Structural and biochemical characterisations show that the planar cell polarity (PCP) protein Inturned harbours a unique PDZ‐like domain that does not bind canonical PDZ‐binding motifs (PBMs) like that of another PCP protein Vangl2. In contrast, the apical‐basal polarity protein Scribble contains four PDZ domains that bind Vangl2, but one PDZ domain ...
Stephan Wilmes, Jan Brysch, Carmen Gelze, Lilli Meier, Daniel Kümmel   +4 more
wiley   +1 more source