Results 21 to 30 of about 104,022 (310)
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 +3 more sources
Molecular architecture of Gαo and the structural basis for RGS16-mediated deactivation [PDF]
, 2008 Heterotrimeric G proteins relay extracellular cues from heptahelical transmembrane receptors to downstream effector molecules. Composed of an α subunit with intrinsic GTPase activity and a βγ heterodimer, the trimeric complex dissociates upon receptor ...
Berman +34 more
core +4 more sources
Intrinsic tethering activity of endosomal Rab proteins. [PDF]
, 2011 Rab small G proteins control membrane trafficking events required for many processes including secretion, lipid metabolism, antigen presentation and growth factor signaling.
Brett, Christopher L +6 more
core +3 more sources
Impact of self-association on the architectural properties of bacterial nucleoid proteins [PDF]
Biophysical Journal, 120 (2021) 370-378, 2021 The chromosomal DNA of bacteria is folded into a compact body called the nucleoid, which is composed essentially of DNA (80%), RNA (10%), and a number of different proteins (10%). These nucleoid proteins act as regulators of gene expression and influence the organization of the nucleoid by bridging, bending, or wrapping the DNA.
arxiv +1 more source
Frontiers in Microbiology, 2020 In the crenarchaeon Sulfolobus acidocaldarius, the archaellum, a type-IV pilus like motility structure, is synthesized in response to nutrient starvation. Synthesis of components of the archaellum is controlled by the archaellum regulatory network (arn).
Xing Ye +10 more
doaj +1 more source
Novel split-luciferase-based genetically encoded biosensors for noninvasive visualization of Rho GTPases. [PDF]
PLoS ONE, 2013 Rho family GTPases are critical regulators of many important cellular processes and the dysregulation of their activities is implicated in a variety of human diseases including oncogenesis and propagation of malignancy.
Weibing Leng +10 more
doaj +1 more source
Regulation of the small GTP-binding protein Rho by cell adhesion and the cytoskeleton [PDF]
The EMBO Journal, 1999 Soluble factors from serum such as lysophosphatidic acid (LPA) are thought to activate the small GTP-binding protein Rho based on their ability to induce actin stress fibers and focal adhesions in a Rho-dependent manner. Cell adhesion to extracellular matrices (ECM) has also been proposed to activate Rho, but this point has been controversial due to ...
Martin A. Schwartz +2 more
openaire +3 more sources
Rabs, Rips, FIPs, and Endocytic Membrane Traffic
The Scientific World Journal, 2003 Rab GTPases, proteins belonging to the Ras-like small GTP-binding protein superfamily, have emerged as master regulators of cellular membrane transport.
Rytis Prekeris
doaj +1 more source
PAKing up to the endothelium [PDF]
, 2009 Angiogenesis recapitulates the growth of blood vessels that progressively expand and remodel into a highly organized and stereotyped vascular network. During adulthood, endothelial cells that formed the vascular wall retain their plasticity and can be ...
Armelle Le Guelte +3 more
core +6 more sources
Phytochrome regulates GTP‐binding protein activity in the envelope of pea nuclei [PDF]
The Plant Journal, 1993 Three GTP‐binding proteins with apparent molecular masses of 27, 28 and 30 kDa have been detected in isolated nuclei of etiolated pea plumules. After LDS‐PAGE and transfer to nitrocellulose these proteins bind [32p]GTP in the presence of excess ATP, suggesting that they are monomeric G proteins.
Stanley J. Roux +4 more
openaire +2 more sources