Results 71 to 80 of about 77,981 (273)
Metal-ion binding and metal-ion induced folding of the adenine-sensing riboswitch aptamer domain [PDF]
, 2010 Divalent cations are important in the folding and stabilization of complex RNA structures. The adenine-sensing riboswitch controls the expression of mRNAs for proteins involved in purine metabolism by directly sensing intracellular adenine levels ...
Noeske, Jonas +2 more
core
A minimum principle in mRNA editing ?
, 2001 mRNA editing of sequences of many species is analyzed. The nature of the inserted nucleotides and the position of the insertion sites, once fixed the edited peptide chain, are explained by introducing a minimum principle in the framework of the crystal ...
Frappat, L., Sciarrino, A., Sorba, P.
core +2 more sources
Advanced Science, EarlyView.ABSTRACT The muscle capsule of Trichinella is a critical structure that impedes immune attacks and drug penetration, yet the molecular mechanisms underlying its formation remain poorly understood. Using a high‐quality super‐pangenome comprising 12 Trichinella species, we compared extensive genomic variations between encapsulating and non‐encapsulating ...
Qingbo Lv +8 more
wiley +1 more source
Lie Markov models with purine/pyrimidine symmetry [PDF]
, 2013 Continuous-time Markov chains are a standard tool in phylogenetic inference. If homogeneity is assumed, the chain is formulated by specifying time-independent rates of substitutions between states in the chain.
Fernández-Sánchez, Jesús +3 more
core +2 more sources
Advanced Science, EarlyView.A snap‐top delivery nanosystem based on an azobenzene metal–organic framework achieves targeted release of 6‐mercaptopurine via acid‐stable frameworks and hypoxia/pH dual‐responsive β‐cyclodextrin gates. This multifunctional platform integrates three synergistic mechanisms: precision drug delivery to inflammatory sites, intrinsic antioxidant properties
Xin Li +6 more
wiley +1 more source
Ribozymes for RNA‐Catalyzed RNA Methylation and Labeling
Angewandte Chemie International Edition, EarlyView.Ribozymes are powerful tools for site‐specific RNA modification. Their activities range from installing tags and fluorophores to generating natural RNA methylations, making them valuable tools to uncover the many functions that RNA plays in nature.
Carolin P. M. Scheitl +1 more
wiley +1 more source
Arthritis &Rheumatology, EarlyView.Objective Methotrexate (MTX) is the first‐line therapy for juvenile idiopathic arthritis (JIA), but up to 40% of patients do not respond to it. Low inosine triphosphate pyrophosphatase (ITPA) activity has been associated with reduced clinical remission. We investigated the role and underlying mechanisms of ITPA in vitro. Methods ITPA enzymatic activity
Sofia Sindici Forgiarini +19 more
wiley +1 more source
Purine and Pyrimidine Nucleotide Synthesis and Metabolism [PDF]
The Arabidopsis Book, 2002 Purine and pyrimidine nucleotides are major energy carriers, subunits of nucleic acids and precursors for the synthesis of nucleotide cofactors such as NAD and SAM. Despite the obvious importance of these molecules, we still have much to learn about how these nucleotides are synthesized and metabolized by plants. Moreover, of the research that has been
Barbara A, Moffatt, Hiroshi, Ashihara
openaire +2 more sources
Arthritis &Rheumatology, EarlyView.Objective Osteoarthritis, the leading cause of disability worldwide, disproportionately affects women, yet sex remains an overlooked determinant. This disparity stems from sex‐specific differences in injury susceptibility—a major risk factor for disease.
Hope D. Welhaven +6 more
wiley +1 more source
A journey into the regulatory secrets of the de novo purine nucleotide biosynthesis
Frontiers in PharmacologyDe novo purine nucleotide biosynthesis (DNPNB) consists of sequential reactions that are majorly conserved in living organisms. Several regulation events take place to maintain physiological concentrations of adenylate and guanylate nucleotides in cells ...
Nour Ayoub +2 more
doaj +1 more source