Results 91 to 100 of about 326,046 (306)

Protocol for the isolation and purification of endoplasmic reticulum-plasma membrane junctions from the mouse brain

STAR Protocols
Summary: Dynamic communication between intracellular organelles often takes place at specialized membrane contact sites that form between their membranes.
Jason A. Weesner, Diantha van de Vlekkert, Leigh Ellen Fremuth, Alessandra d’Azzo   +3 more
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

The Combination of Temporal and Spatial Dose Fractionation in Microbeam Radiation Therapy

Biomedicines
Background: Microbeam radiation therapy (MRT) is an advanced preclinical approach in radiotherapy that utilizes spatially fractionated dose distributions by collimating x-rays into micrometer-wide, planar beams.
Jessica Stolz, Kristina Rogal, Sandra Bicher, Johanna Winter, Mabroor Ahmed, Susanne Raulefs, Stephanie E. Combs, Stefan H. Bartzsch, Thomas E. Schmid   +8 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Control of lipid organization and actin assembly during clathrin-mediated endocytosis by the cytoplasmic tail of the rhomboid protein Rbd2. [PDF]

, 2015
Clathrin-mediated endocytosis (CME) is facilitated by a precisely regulated burst of actin assembly. PtdIns(4,5)P2 is an important signaling lipid with conserved roles in CME and actin assembly regulation. Rhomboid family multipass transmembrane proteins
Cortesio, Christa L, Drubin, David G, Lewellyn, Eric B   +2 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Cytochrome oxidase subunit VI of Trypanosoma brucei is imported without a cleaved presequence and is developmentally regulated at both RNA and protein levels [PDF]

, 2001
Mitochondrial respiration in the African trypanosome undergoes dramatic developmental stage regulation. This requires co-ordinated control of components encoded by both the nuclear genome and the kinetoplast, the unusual mitochondrial genome of these ...
Benne R., Beverley S.M., Brun R., Carruthers V.B., Czichos J., Feagin J.E., Folsch H., Hahne K., Hauser R., Hausler T., Hirumi H., Kwast K.E., LeBowitz J.H., Matthews K.R., Osinga K.A., Overath P., Priest J.W., Roditi I., Sherwin T., Smagula C., Sogin M.L., Stuart K., Tasker M., Torri A.F., Tschudi C., Ullu E., Vassella E., Wirtz E., Woods A., Ziegelbauer K.   +29 more
core   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Surface functionalization dependent subcellular localization of Superparamagnetic nanoparticle in plasma membrane and endosome

Nano Convergence, 2018
In this article, we elaborate the application of thermal decomposition based synthesis of Fe3O4 superparamagnetic nanoparticle (SPMNP) in subcellular fractionation context.
Deepak B. Thimiri Govinda Raj, Niamat Ali Khan   +1 more
doaj   +1 more source

An isoform of 14‐3‐3 protein regulates transbilayer lipid movement at the plasma membrane

FEBS Letters, EarlyView.
Loss of 14‐3‐3ζ in CHO cells confers resistance to exogenous phosphatidylserine (PS) and impairs endocytosis‐independent inward flip‐flop of fluorescent PS at the plasma membrane. RNAi‐mediated knockdown reproduces this defect, while no additive effect is seen in ATP11C‐deficient cells.
Akiko Yamaji‐Hasegawa, Akira Hattori, Masafumi Tsujimoto, Toshihide Kobayashi   +3 more
wiley   +1 more source