Results 21 to 30 of about 104,742 (325)

Nucleotides: Structure and Properties [PDF]

, 2005
Nucleotides consist of a nitrogen-containing base, a five-carbon sugar, and one or more phosphate groups. Cells contain many types of nucleotides, which play a central role in a wide variety of cellular processes, including metabolic regulation and the ...
Bowater, RP
core   +1 more source

Allosteric regulation accompanied by oligomeric state changes of Trypanosoma brucei GMP reductase through cystathionine-β-synthase domain

Nature Communications, 2020
Trypanosoma brucei guanosine 5′-monophosphate reductase (TbGMPR) catalyses the conversion of GMP to inosine 5′-monophosphate and contains a cystathionine-β-synthase (CBS) domain. Here the authors combine X-ray crystallography and kinetic measurements and
Akira Imamura, Tetsuya Okada, Hikaru Mase, Takuya Otani, Tomoka Kobayashi, Manatsu Tamura, Bruno Kilunga Kubata, Katsuaki Inoue, Robert P. Rambo, Susumu Uchiyama, Kentaro Ishii, Shigenori Nishimura, Takashi Inui   +12 more
doaj   +1 more source

GTP binding to translation factor eIF2B stimulates its guanine nucleotide exchange activity

iScience, 2021
Summary: eIF2B is the guanine nucleotide exchange factor (GEF) required for cytoplasmic protein synthesis initiation in eukaryotes and its regulation within the integrated stress response (ISR).
Christopher J. Kershaw, Martin D. Jennings, Francesco Cortopassi, Margherita Guaita, Hawra Al-Ghafli, Graham D. Pavitt   +5 more
doaj   +1 more source

Are guanine nucleotide binding proteins a distinct class of regulatory proteins? [PDF]

, 1983
Proteins which bind guanine nucleotides are found in a diverse set of key regulatory positions. They are involved in hormone action, visual transduction, protein synthesis and microtubule assembly. In addition to their ability to bind guanine nucleotides
Kleinzeller, Cassel, Martin, Pfeuffer, Hanski, Northup, Northup, Rodbell, Cooper, Houslay, Manning, Johnson, Bokoch, Zahniser, Stryer, Kuhn, Fung, Baehr, Hurley, Hughes, Yamazaki, Abood, Bitensky, Kawamura, Kawamura, Emeis, Swarup, Maitra, Schreier, Safer, Safer, Fakunding, Brot, Hachmann, Uchida, Collier, Montanaro, Beaudet, Laursen, Velenzuela, Spiegelman, Carlier, Zackroff, Weisenberg, Heyworth, Heyworth, Goodhardt, Shih, Capon, Willingham   +49 more
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Recognition of two distinct elements in the RNA substrate by the RNA-binding domain of the T. thermophilus DEAD box helicase Hera [PDF]

, 2013
DEAD box helicases catalyze the ATP-dependent destabilization of RNA duplexes. Whereas duplex separation is mediated by the helicase core shared by all members of the family, flanking domains often contribute to binding of the RNA substrate.
Klostermeier, Dagmar, Linden, Martin H., Rudolph, Markus G., Steimer, Lenz, Wurm, Jan Philip, Wöhnert, Jens   +5 more
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Crystal structures of the human elongation factor eEFSec suggest a non-canonical mechanism for selenocysteine incorporation

Nature Communications, 2016
Specialized translation elongation factors (eEFSec and SelB) promote selenocysteine incorporation into proteins. Here, the authors report the structure of human eEFSec, examine its interactions with guanine nucleotides, and propose a non-canonical ...
Malgorzata Dobosz-Bartoszek, Mark H. Pinkerton, Zbyszek Otwinowski, Srinivas Chakravarthy, Dieter Söll, Paul R. Copeland, Miljan Simonović   +6 more
doaj   +1 more source

Effective and repeatable chromatographic separation of 5 nucleotides in infant formula milk powder by ion-pair high-performance liquid chromatography–ultraviolet

Journal of Dairy Science, 2022
: A robust method using HPLC-UV was developed to improve the accuracy and repeatability of a quantitative method to detect 5 nucleotides (cytidine-monophosphate, uridine monophosphate, adenosine monophosphate, guanine monophosphate, and inosine ...
Yuanjia Chen, Lin Luo, Peiyan Feng, Baojun Xu, Xiaoqun Wei   +4 more
doaj   +1 more source

Interaction of the Xanthine Nucleotide Binding Goα Mutant with G Protein-coupled Receptors [PDF]

, 1998
We constructed a double mutant version of the α subunit of Go that was regulated by xanthine nucleotides instead of guanine nucleotides (GoαX). We investigated the interaction between GoαX and G protein-coupled receptors in vitro.
Simon, Melvin I., Yu, Bo
core   +1 more source

An integrated approach to evaluate acetamiprid-induced oxidative damage to tRNA in human cells based on oxidized nucleotide and tRNA profiling

Environment International, 2023
Acetamiprid is poisonous to mammals due to severe acetamiprid-induced oxidative stress that could cause mitochondrial dysfunctions, lipid and protein oxidation, inflammation, apoptosis, and DNA damage.
Hui-Xia Zhang, Dian Yu, Jian-Feng Sun, Ling Zeng, Cai-Yun Wang, Li-Ping Bai, Guo-Yuan Zhu, Zhi-Hong Jiang, Wei Zhang   +8 more
doaj   +1 more source

Interaction of low-energy electrons with the purine bases, nucleosides, and nucleotides of DNA [PDF]

, 2006
The authors report results from computational studies of the interaction of low-energy electrons with the purine bases of DNA, adenine and guanine, as well as with the associated nucleosides, deoxyadenosine and deoxyguanosine, and the nucleotide ...
McKoy, Vincent, Winstead, Carl
core   +1 more source