Results 31 to 40 of about 231,218 (308)
The F-actin filament capping protein CapG is a bona fide nucleolar protein [PDF]
, 2008 Actin works in concert with myosin I to regulate the transcription of ribosomal genes in the nucleolus. Recently, nucleolar actin has been shown to be active in its polymeric form raising the question how actin dynamics is regulated in the nucleolus ...
Gettemans, Jan +3 more
core +2 more sources
ARF: the most misunderstood GTPase I ever knew - why study ARF GAPs
Frontiers in Molecular BiosciencesADP-ribosylation factors (ARFs) are GTP-binding proteins that were discovered in the early 1980s, shortly after heterotrimeric GTP-binding proteins (G proteins) and nearly simultaneously with RAS.
Rachel E. Turn +5 more
doaj +1 more source
Dissection of GTPase activating proteins reveals functional asymmetry in the COPI coat of budding yeast. [PDF]
, 2019 The Arf GTPase controls formation of the COPI vesicle coat. Recent structural models of COPI revealed the positioning of two Arf1 molecules in contrasting molecular environments.
Arakel, E. +5 more
core +1 more source
IQGAP Family Members in Yeast, Dictyostelium, and Mammalian Cells
International Journal of Cell Biology, 2012 IQGAPs are a family of scaffolding proteins with multiple domains, named for the IQ motifs and GTPase activating protein (GAP) related domains. Despite their GAP homology, IQGAP proteins act as effectors for GTP-bound GTPases of the Ras superfamily and ...
Katie B. Shannon
doaj +1 more source
GTP-Binding Proteins and Regulated Exocytosis [PDF]
Critical Reviews in Oral Biology & Medicine, 1999 Regulated exocytosis, which occurs in response to stimuli, is a two-step process involving the docking of secretory granules (SGs) at specific sites on the plasma membrane (PM), with subsequent fusion and release of granule contents. This process plays a crucial role in a number of tissues, including exocrine glands, chromaffin cells, platelets, and ...
openaire +2 more sources
Mutations in human dynamin block an intermediate stage in coated vesicle formation [PDF]
, 1993 The role of human dynamin in receptor-mediated endocytosis was investigated by transient expression of GTP-binding domain mutants in mammalian cells. Using assays which detect intermediates in coated vesicle formation, the dynamin mutants were found to ...
Damke, Hanna +5 more
core +3 more sources
American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView., 2023 Abstract Dynamin 1 is a GTPase protein involved in synaptic vesicle fission, which facilitates the exocytosis of neurotransmitters necessary for normal signaling. Pathogenic variants in the DNM1 gene are associated with intractable epilepsy, often manifested as infantile spasms at onset, developmental delay, and a movement disorder, and are located in ...
Davide Mei +4 more
wiley +1 more source
The GTP- and Phospholipid-Binding Protein TTD14 Regulates Trafficking of the TRPL Ion Channel in Drosophila Photoreceptor Cells. [PDF]
PLoS Genetics, 2015 Recycling of signaling proteins is a common phenomenon in diverse signaling pathways. In photoreceptors of Drosophila, light absorption by rhodopsin triggers a phospholipase Cβ-mediated opening of the ion channels transient receptor potential (TRP) and ...
Alexander C Cerny +7 more
doaj +1 more source
Divergent Mechanisms Activating RAS and Small GTPases Through Post-translational Modification
Frontiers in Molecular Biosciences, 2021 RAS is a founding member of the RAS superfamily of GTPases. These small 21 kDa proteins function as molecular switches to initialize signaling cascades involved in various cellular processes, including gene expression, cell growth, and differentiation ...
Natsuki Osaka +18 more
doaj +1 more source
Concerted Complex Assembly and GTPase Activation in the Chloroplast Signal Recognition Particle [PDF]
, 2011 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