Results 111 to 120 of about 178,961 (291)

Development of Dipicolylamine-Modified Cyclodextrins for the Design of Selective Guest-Responsive Receptors for ATP

Molecules, 2018
The construction of supramolecular recognition systems based on specific host–guest interactions has been studied in order to design selective chemical sensors. In this study, guest-responsive receptors for ATP have been designed with cyclodextrins (CyDs)
Tatsuru Yamada, Shoji Fujiwara, Kyohhei Fujita, Yuji Tsuchido, Takeshi Hashimoto, Takashi Hayashita   +5 more
doaj   +1 more source

Inhibition and activation of interleukin 2 synthesis by direct modification of guanosine triphosphate-binding proteins.

Journal of Immunology, 1988
To investigate whether guanosine triphosphate-binding proteins (G proteins) are involved in T cell activation, tests were made of the effect of pertussis toxin, cholera toxin, guanosine 5'-(3-O-thio)-triphosphate, and fluoride ions on interleukin 2 (IL-2)
C. Aussel, D. Mary, J. Peyron, C. Pelassy, B. Ferruà, M. Fehlmann   +5 more
semanticscholar   +1 more source

Kinetic and Structural Analysis of the Mg2+ -binding Site of the Guanine Nucleotide-binding Protein p21 H-ras. [PDF]

, 1993
The coordination and binding of the Mg2+ ion in the nucleotide−binding site of p21 have been investigated using site−directed mutagenesis, kinetic methods, and phosphorous NMR.
Borasio, Gian Domenico, Goody, R. S., John, J., Rensland, H., Schlichting, I., Vetter, I., Wittinghofer, A.   +6 more
core  

Slow Transit Constipation: Pathophysiological Perspectives and Management Updates

Journal of Digestive Diseases, EarlyView.
Slow transit constipation (STC) is a complex neuromuscular disorder driven by interstitial cells of Cajal (ICCs) loss and enteric neuropathy. Diagnosis relies on objective transit testing while excluding pelvic floor dysfunction. Management follows a stepwise, phenotype‐driven approach, progressing from conventional laxatives to emerging targeted ...
Athanasios Syllaios, Stavros P. Papadakos, Alexandros Ioannou, Maximos Frountzas, Dimosthenis Michelakis, Dimitrios Patsouras, Spyridon Dritsas, Manousos‐Georgios Pramateftakis, Dimitrios Schizas   +8 more
wiley   +1 more source

How the initiating ribosome copes with ppGpp to translate mRNAs.

PLoS Biology, 2020
During host colonization, bacteria use the alarmones (p)ppGpp to reshape their proteome by acting pleiotropically on DNA, RNA, and protein synthesis. Here, we elucidate how the initiating ribosome senses the cellular pool of guanosine nucleotides and ...
Daria S Vinogradova, Victor Zegarra, Elena Maksimova, Jose Alberto Nakamoto, Pavel Kasatsky, Alena Paleskava, Andrey L Konevega, Pohl Milón   +7 more
doaj   +1 more source

The synthesis of 2′-methylseleno adenosine and guanosine 5′-triphosphates

Bioorganic & Medicinal Chemistry, 2012
Modified nucleoside triphosphates (NTPs) represent powerful building blocks to generate nucleic acids with novel properties by enzymatic synthesis. We have recently demonstrated the access to 2'-SeCH(3)-uridine and 2'-SeCH(3)-cytidine derivatized RNAs for applications in RNA crystallography, using the corresponding nucleoside triphosphates and distinct
Santner, Tobias, Micura, Ronald, Siegmund, Vanessa, Marx, Andreas   +3 more
openaire   +3 more sources

Anatomical Distribution of Nucleoside System in the Human Brain and Implications for Therapy [PDF]

, 2013
Nucleosides have a wide range of physiological and pathophysiological roles in the human brain as modulators of a variety of neural functions. For example, adenosine, inosine, guanosine, and uridine participate in the mechanisms underlying memory ...
Dobolyi, Árpád, Kovács, Zsolt
core   +1 more source

Compartmentalisation in cAMP signalling: A phase separation perspective

British Journal of Pharmacology, EarlyView.
Cells rely on precise spatiotemporal control of signalling pathways to ensure functional specificity. The compartmentalisation of cyclic AMP (cAMP) and protein kinase A (PKA) signalling enables distinct cellular responses within a crowded cytoplasmic space.
Milda Folkmanaite, Manuela Zaccolo
wiley   +1 more source

A Putative Guanosine Triphosphate Cyclohydrolase I Named CaGCH1 Is Involved in Hyphal Branching and Fruiting Development in Cyclocybe aegerita. [PDF]

Front Microbiol, 2022
Tao N, Cheng B, Chai H, Cui X, Ma Y, Yan J, Zhao Y, Chen W.   +7 more
europepmc   +1 more source

Insights Into Gut Barrier Dysfunction and Metabolic Alterations in Mycophenolate‐Induced Enteropathy [PDF]

Basic Clin Pharmacol Toxicol
ABSTRACT Mycophenolic acid (MPA) is a widely used immunosuppressant whose use is often limited by gastrointestinal toxicity. Gut bacterial hydrolysis of liver‐derived MPA glucuronides increases local exposure to MPA, potentially impairing epithelial barrier function and cellular metabolism.
Brossier C, Sauvage F, Valencia‐Schmitt C, Calco V, Villa P, Marquet P, Lawson R.   +6 more
europepmc   +2 more sources