Results 21 to 30 of about 149,249 (343)

Dual positive and negative regulation of GPCR signaling by GTP hydrolysis [PDF]

, 2009
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, Davey, John, Godfrey, Emma L., Hill, Claire, Hodgkin, Matthew N., Ladds, Graham, Rand, D. A., Smith, Benjamin, Thornton, Steven   +8 more
core   +1 more source

The non-catalytic carboxyl-terminal domain of ARFGAP1 regulates actin cytoskeleton reorganization by antagonizing the activation of Rac1. [PDF]

PLoS ONE, 2011
The regulation of the actin cytoskeleton and membrane trafficking is coordinated in mammalian cells. One of the regulators of membrane traffic, the small GTP-binding protein ARF1, also activates phosphatidylinositol kinases that in turn affect actin ...
Ka Yu Siu, Mei Kuen Yu, Xinggang Wu, Min Zong, Michael G Roth, Hsiao Chang Chan, Sidney Yu   +6 more
doaj   +1 more source

Cdc42/Rac Interactive Binding Containing Effector Proteins in Unicellular Protozoans With Reference to Human Host: Locks of the Rho Signaling

Frontiers in Genetics, 2022
Small GTPases are the key to actin cytoskeleton signaling, which opens the lock of effector proteins to forward the signal downstream in several cellular pathways. Actin cytoskeleton assembly is associated with cell polarity, adhesion, movement and other
Preeti Umarao, Pragyan Parimita Rath, Samudrala Gourinath   +2 more
doaj   +1 more source

Interface analysis of small GTP binding protein complexes suggests preferred membrane orientations

Biological chemistry, 2017
Crystal structures of small GTP binding protein complexes with their effectors and regulators reveal that one particularly flat side of the G domain that contains helix α4 and the C-terminal helix α5 is practically devoid of contacts.
I. Vetter
semanticscholar   +1 more source

Specific Rab GTPase-activating proteins define the Shiga toxin and epidermal growth factor uptake pathways [PDF]

, 2007
Rab family guanosine triphosphatases (GTPases) together with their regulators define specific pathways of membrane traffic within eukaryotic cells. In this study, we have investigated which Rab GTPase-activating proteins (GAPs) can interfere with the ...
Barr, Francis A., Fuchs, Evelyn, Hass, Alexander K., Lord, Mike, Spooner, Robert A., Yoshimura, Shin-ichiro   +5 more
core   +2 more sources

The Rho GDI Rdi1 regulates Rho GTPases by distinct mechanisms [PDF]

, 2008
© 2008 by The American Society for Cell Biology. Under the License and Publishing Agreement, authors grant to the general public, effective two months after publication of (i.e.,.
Ammerer G., Andoh T., Bose I., Bosl W. J., Bourmeyster N., Christopher Tiedje, Chuang T. H., Cole K. C., Daniel Lew, DerMardirossian C., DerMardirossian C., Dovas A., Dransart E., Eitzen G., Forget M. A., Gladfelter A. S., Gulli M. P., Hoffman G. R., Höfken T., Höfken T., Imme Sakwa, Irazoqui J. E., Irazoqui J. E., Jaffe A. B., Janke C., Jensen S., Kassir Y., Kim L., Knop M., Koch G., Lee D. H., Longtine M. S., Marco E., Masuda T., Mazón M. J., Mehta D., Mösch H. U., Nomanbhoy T. K., Palecek S. P., Park H. O., Ptacek J., Richman T. J., Richman T. J., Roberts R. L., Roth A. F., Rotin D., Scheffzek K., Schwamborn J. C., Seshan A., Takahashi K., Tcheperegine S. E., Thomas Höfken, Ursula Just, Valdez-Taubas J., Wang H. R., Wedlich-Soldner R., Yamashita T., Yamochi W., Ziman M.   +58 more
core   +3 more sources

Structural Insights into HypB, a GTP-binding Protein That Regulates Metal Binding [PDF]

Journal of Biological Chemistry, 2006
HypB is a prokaryotic metal-binding guanine nucleotide-binding protein that is essential for nickel incorporation into hydrogenases. Here we solved the x-ray structure of HypB from Methanocaldococcus jannaschii. It shows that the G-domain has a different topology than the Ras-like proteins and belongs to the SIMIBI (after Signal Recognition Particle ...
Raphael Gasper, Andrea Scrima, Alfred Wittinghofer   +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

The Phosphatase PP2A Interacts With ArnA and ArnB to Regulate the Oligomeric State and the Stability of the ArnA/B Complex

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, Marian Samuel Vogt, Chris van der Does, Wolfgang Bildl, Uwe Schulte, Uwe Schulte, Uwe Schulte, Lars-Oliver Essen, Lars-Oliver Essen, Sonja-Verena Albers, Sonja-Verena Albers   +10 more
doaj   +1 more source

Thermodynamic bounds on the ultra- and infra-affinity of Hsp70 for its substrates [PDF]

, 2017
The 70 kDa Heat Shock Proteins Hsp70 have several essential functions in living systems, such as protecting cells against protein aggregation, assisting protein folding, remodeling protein complexes and driving the translocation into organelles.
Hartich, David, Nguyen, Basile, Rios, Paolo De Los, Seifert, Udo   +3 more
core   +2 more sources