Results 31 to 40 of about 177,246 (350)

Mechanisms of microtubule dynamics and force generation examined with computational modeling and electron cryotomography

Nature Communications, 2020
Microtubules are dynamic tubulin polymers which elongate by addition of bent guanosine triphosphate tubulin to the tips of curving protofilaments. Here authors use Brownian dynamics modeling and electron cryotomography to show that the lateral activation
Nikita B. Gudimchuk, Evgeni V. Ulyanov, Eileen O’Toole, Cynthia L. Page, Dmitrii S. Vinogradov, Garry Morgan, Gabriella Li, Jeffrey K. Moore, Ewa Szczesna, Antonina Roll-Mecak, Fazoil I. Ataullakhanov, J. Richard McIntosh   +11 more
doaj   +1 more source

The advantage of channeling nucleotides for very processive functions [version 1; referees: 3 approved]

F1000Research, 2017
Nucleoside triphosphate (NTP)s, like ATP (adenosine 5’-triphosphate) and GTP (guanosine 5’-triphosphate), have long been considered sufficiently concentrated and diffusible to fuel all cellular ATPases (adenosine triphosphatases) and GTPases (guanosine ...
Diana Zala, Uwe Schlattner, Thomas Desvignes, Julien Bobe, Aurélien Roux, Philippe Chavrier, Mathieu Boissan   +6 more
doaj   +1 more source

Protocol for structural and biochemical analyses of RhoA GTPase

STAR Protocols, 2021
Summary: Ras GTPases in complex with Guanosine triphosphate (GTP) or GTP analog exhibit dynamic equilibrium between two interconvertible conformations—an inactive state 1 and an active state 2.
Yuan Lin, Miki Watanabe-Chailland, Yi Zheng   +2 more
doaj   +1 more source

Ligand-Specific Regulation of the Endogenous Mu-Opioid Receptor by Chronic Treatment with Mu-Opioid Peptide Agonist [PDF]

, 2013
Since the discovery of the endomorphins (EM), the postulated endogenous peptide agonists of the mu-opioid receptors, several analogues have been synthesized to improve their binding and pharmacological profiles.
Birkás, Erika, Bozó, Beáta, Cinar, Resat, Dochnal, Roberta Beatrix, Fábián, Gabriella, Kicsi, Emese Gabriella, Kékesi, Orsolya, Murányi, Marianna, Mácsai, Mónika, Szabó, Gyula, Szűcs, Mária, Tóth, Géza, Zentai, András   +12 more
core   +3 more sources

Preparation of Isotope-labeled Dihydroneopterin 3'-Triphosphate with High Specific Activity

Pteridines, 1990
Isotope-labeled dihydroneopterin 3'-triphosphate with 3H at positions C-1' and C-2', respectively, has been prepared from isotope-labeled glucose as starting material. Glucose was first converted enzymatically to ribose 5-phosphate.
Katzenmeier Gerd, Schwarzkopf Bruno, Van Quang Le, Schmid Cornelia, Bacher Adelbert   +4 more
doaj   +1 more source

DNA sensor cGAS-mediated immune recognition

Protein & Cell, 2016
The host takes use of pattern recognition receptors (PRRs) to defend against pathogen invasion or cellular damage. Among microorganism-associated molecular patterns detected by host PRRs, nucleic acids derived from bacteria or viruses are tightly ...
Pengyan Xia, Shuo Wang, Pu Gao, Guangxia Gao, Zusen Fan   +4 more
doaj   +1 more source

The T2238C human atrial natriuretic peptide molecular variant and the risk of cardiovascular diseases [PDF]

, 2018
Atrial natriuretic peptide (ANP) is a cardiac hormone which plays important functions to maintain cardio-renal homeostasis. The peptide structure is highly conserved among species. However, a few gene variants are known to fall within the human ANP gene.
Bianchi, Franca, Forte, Maurizio, Marchitti, Simona, Rubattu, Speranza, Sciarretta, Sebastiano, Volpe, Massimo   +5 more
core   +2 more sources

Gαs slow conformational transition upon GTP binding and a novel Gαs regulator

iScience, 2023
Summary: G proteins are major signaling partners for G protein-coupled receptors (GPCRs). Although stepwise structural changes during GPCR–G protein complex formation and guanosine diphosphate (GDP) release have been reported, no information is available
Donghoon Ahn, Davide Provasi, Nguyen Minh Duc, Jun Xu, Leslie Salas-Estrada, Aleksandar Spasic, Min Woo Yun, Juyeong Kang, Dongmin Gim, Jaecheol Lee, Yang Du, Marta Filizola, Ka Young Chung   +12 more
doaj   +1 more source

The chloroplast import receptor Toc34 functions as preprotein-regulated GTPase [PDF]

, 2002
Toc34 is a protein of the chloroplast outer envelope membrane that acts as receptor for preproteins containing a transit sequence. The recognition of preproteins by Toc34 is regulated by GTP binding and phosphorylation.
Hörth, P., Jelic, M., Motzkus, M., Schleiff, E., Soll, J., Sveshnikova, N.   +5 more
core   +1 more source

Dynamics of Microtubule Growth and Catastrophe [PDF]

, 2007
We investigate a simple model of microtubule dynamics in which a microtubule evolves by: (i) attachment of guanosine triphosphate (GTP) to its end at rate lambda, (ii) GTP converting irreversibly to guanosine diphosphate (GDP) at rate 1, and (iii ...
Antal, T., Chakraborty, B., Krapivsky, P. L., Mailman, M., Redner, S.   +4 more
core   +1 more source