Results 51 to 60 of about 99,476 (367)
Reactions of tubulin-associated guanine nucleotides.
Journal of Biological Chemistry, 1978 Only exchangeably bound nucleotide (E-site) is involved in the reaction of the transplhosphorylase activity in microtubular protein. Contrary to earlier reports, we find that the nonexchangeable nucleotide (N-site) is not a substrate. This conclusion is based upon comparison of: (a) rates of hydrolysis of endogenous tubulin-associated GTP and added ...
Barry Zeeberg, Michael Caplow
openaire +3 more sources
eLife, 2020 We report the in vivo regulation of Inosine-5´-monophosphate dehydrogenase 1 (IMPDH1) in the retina. IMPDH1 catalyzes the rate-limiting step in the de novo synthesis of guanine nucleotides, impacting the cellular pools of GMP, GDP and GTP.
Anna Plana-Bonamaisó +13 more
doaj +1 more source
Mesoscopic model for DNA G-quadruplex unfolding [PDF]
Scientific Reports 7, 11756 (2017), 2017 Genomes contain rare guanine-rich sequences capable of assembling into four-stranded helical structures, termed G-quadruplexes, with potential roles in gene regulation and chromosome stability. Their mechanical unfolding has only been reported to date by all-atom simulations, which cannot dissect the major physical interactions responsible for their ...
arxiv +1 more source
Molecular dynamics simulation study of the binding of purine bases to the aptamer domain of the guanine sensing riboswitch [PDF]
, 2009 Riboswitches are a novel class of genetic control elements that function through the direct interaction of small metabolite molecules with structured RNA elements.
Stock, Gerhard +2 more
core +1 more source
Structural Basis of SARS-CoV-2 Polymerase Inhibition by Favipiravir
The Innovation, 2021 Summary: The outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has developed into an unprecedented global pandemic. Nucleoside analogs, such as Remdesivir and Favipiravir, can serve as the first-line broad-spectrum antiviral drugs ...
Qi Peng +7 more
doaj
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
Evolutionary interplay between viruses and R‐loops
FEBS Letters, EarlyView.Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi +4 more
wiley +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
Molecular Oncology, EarlyView.Low expression of five purine metabolism‐related genes (ADSL, APRT, ADCY3, NME3, NME6) was correlated with poor survival in colorectal cancer. Immunohistochemistry analysis showed that low NME3 (early stage) and low ADSL/NME6 (late stage) levels were associated with high risk.
Sungyeon Kim +8 more
wiley +1 more source
A metazoan/plant-like capping enzyme and cap modified nucleotides in the unicellular eukaryote Trichomonas vaginalis. [PDF]
PLoS Pathogens, 2010 The cap structure of eukaryotic messenger RNAs is initially elaborated through three enzymatic reactions: hydrolysis of the 5'-triphosphate, transfer of guanosine through a 5'-5' triphosphate linkage and N7-methylation of the guanine cap.
Augusto Simoes-Barbosa +2 more
doaj +1 more source