Concerted Complex Assembly and GTPase Activation in the Chloroplast Signal Recognition Particle [PDF]
The universally conserved signal recognition particle (SRP) and SRP receptor (SR) mediate the cotranslational targeting of proteins to cellular membranes.
Chandrasekar, Sowmya +4 more
core +3 more sources
Signal Recognition Particle (SRP) and SRP Receptor: A New Paradigm for Multistate Regulatory GTPases [PDF]
The GTP-binding proteins or GTPases comprise a superfamily of proteins that provide molecular switches in numerous cellular processes. The “GTPase switch” paradigm, in which a GTPase acts as a bimodal switch that is turned “on” and “off” by external ...
Schmid, Sandra L. +2 more
core +2 more sources
Domain interactions within Fzo1 oligomers are essential for mitochondrial fusion [PDF]
Mitofusins are conserved GTPases essential for the fusion of mitochondria. These mitochondrial outer membrane proteins contain a GTPase domain and two or three regions with hydrophobic heptad repeats, but little is known about how these domains interact ...
Chan, David C., Griffin, Erik E.
core +3 more sources
Regulation of the Neuron-specific Ras GTPase-activating Protein, synGAP, by Ca2+/Calmodulin-dependent Protein Kinase II [PDF]
synGAP is a neuron-specific Ras GTPase-activating protein found in high concentration in the postsynaptic density fraction from mammalian forebrain. Proteins in the postsynaptic density, including synGAP, are part of a signaling complex attached to the ...
Kennedy, Mary B. +2 more
core +1 more source
Dual positive and negative regulation of GPCR signaling by GTP hydrolysis [PDF]
G protein-coupled receptors (GPCRs) regulate a variety of intracellular pathways through their ability to promote the binding of GTP to heterotrimeric G proteins. Regulator of G protein signaling (RGS) proteins increase the intrinsic GTPase activity of G-
Berg, Hugo van den +8 more
core +1 more source
The formin FHOD1 and the small GTPase Rac1 promote vaccinia virus actin-based motility [PDF]
Vaccinia virus dissemination relies on the N-WASP– ARP2/3 pathway, which mediates actin tail formation underneath cell-associated extracellular viruses (CEVs).
Alberts +79 more
core +2 more sources
Regulation of polarised growth in fungi [PDF]
Polarised growth in fungi occurs through the delivery of secretory vesicles along tracks formed by cytoskeletal elements to specific sites on the cell surface where they dock with a multiprotein structure called the exocyst before fusing with the ...
Adamo +112 more
core +1 more source
Identifying conformational changes with site-directed spin labeling reveals that the GTPase domain of HydF is a molecular switch [PDF]
[FeFe]-hydrogenases catalyse the reduction of protons to hydrogen at a complex 2Fe[4Fe4S] center called H-cluster. The assembly of this active site is a multistep process involving three proteins, HydE, HydF and HydG.
Acquasaliente, Laura +8 more
core +1 more source
The coordination of cell growth during fission yeast mating requires Ras1-GTP hydrolysis [PDF]
The spatial and temporal control of polarity is fundamental to the survival of all organisms. Cells define their polarity using highly conserved mechanisms that frequently rely upon the action of small GTPases, such as Ras and Cdc42.
A Merla +58 more
core +10 more sources
DNM1 encephalopathy: A new disease of vesicle fission. [PDF]
ObjectiveTo evaluate the phenotypic spectrum caused by mutations in dynamin 1 (DNM1), encoding the presynaptic protein DNM1, and to investigate possible genotype-phenotype correlations and predicted functional consequences based on structural modeling ...
Campbell, Colleen A +38 more
core +2 more sources

