Results 71 to 80 of about 144,015 (298)

Ammonification Process Is Limited by Transformation of Medium Molecular Weight Nitrogenous Organics but Not Hydrolysis of Proteins

Advanced Science, EarlyView.
A multi‐level analytical framework, integrating protein‐level persistence analysis, nontargeted HRMS formula tracking, peptide‐level proteomics, and targeted monomer quantification under varying redox conditions, together with FMO calculations reveal that ammonification is limited by medium molecular weight nitrogenous multimers.
Jing Li, Junjie Qiu, Fan Lü, Hua Zhang, Pinjing He   +4 more
wiley   +1 more source

A.: Mechanisms of synthesis of purine nucleotides in heart muscle extracts

, 1957
The key role of ATP, a purine nucleotide, in the conversion of chemical energy into mechanical work by myocardial tissue is well established (1, 2). The requirement for purine nucleotides has also been demonstrated in the multiple synthetic reactions ...
David A. Goldthwait, A. Goldthwait
core   +1 more source

Lactylation‐Driven PROS1‐TYRO3‐CARF Signaling Promotes Therapy‐Induced Senescence Escape and Radioresistance in Meningioma

Advanced Science, EarlyView.
A glycolysis‐driven epigenetic switch promotes therapy resistance in meningioma. Increased lactate production enhances histone H3K27 lactylation, which activates PROS1 secretion. Secreted PROS1 engages TYRO3 signaling to degrade the senescence regulator CARF, allowing cancer cells to escape growth arrest.
Zhuohang Wang, Qixiang Zhang, Keman Liao, Xiaoyu Liu, Hongchi Zhang, Yunsheng Chen, Yuxiao Ma, Yikui Liu, Aoqian Xu, Yuhao Sun, Jiayi Chen, Liuguan Bian, Baofeng Wang   +12 more
wiley   +1 more source

Simultaneous quantification of 12 different nucleotides and nucleosides released from renal epithelium and in human urine samples using ion-pair reversed-phase HPLC [PDF]

, 2012
Nucleotides and nucleosides are not only involved in cellular metabolism but also act extracellularly via P1 and P2 receptors, to elicit a wide variety of physiological and pathophysiological responses through paracrine and autocrine signalling pathways.
Claire M. Peppiatt-Wildman, Scott-Ward, Toby S., Alberto Contreras-Sanz, Kevin M. G. Taylor, Malone-Lee, James, Wildman, Scott S.P., Rebecca E. Birch, Scott S. P. Wildman, James Malone-Lee, Jennifer C. Jacoby, Taylor, Kevin M. G., Gill, Hardyal S., Peppiatt-Wildman, Claire M., Birch, Rebecca E., Contreras-Sanz, Alberto, Hardyal S. Gill, Toby S. Scott-Ward, Jacoby, Jennifer C., Wildman, Scott S. P.   +18 more
core   +1 more source

Divergent prebiotic synthesis of pyrimidine and 8-oxo-purine ribonucleotides [PDF]

, 2017
Understanding prebiotic nucleotide synthesis is a long standing challenge thought to be essential to elucidating the origins of life on Earth. Recently, remarkable progress has been made, but to date all proposed syntheses account separately for the ...
Bucar, DK, Stairs, S, Powner, MW, Nikmal, A, Szostak, JW, Zheng, SL   +5 more
core   +4 more sources

A journey into the regulatory secrets of the de novo purine nucleotide biosynthesis

Frontiers in Pharmacology
De 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, Antoine Gedeon, Hélène Munier-Lehmann   +2 more
doaj   +1 more source

Diguanosine 5′ ,5‴-P1 ,P4-tetraphosphate and other purine nucleotides inhibit endoribonuclease VI from Artemia [PDF]

, 1988
The activity of the endoribonuclease VI from Artemia is sensitive to several purine nucleotides. The enzyme is non-competitively inhibited by diguanosine tetraphosphate (Ki = 75 μM), a nucleotide abundant in Artemia encysted gastrulae and located in the ...
Heredia, Claudio F., Pilar P. Grau, Grau, Pilar P., Claudio F. Heredia   +3 more
core   +1 more source

Concentrations of Purine Nucleotides and Purine and Pyrimidine Bases in Cerebrospinal Fluid of Neurologically Healthy Children [PDF]

, 1992
Summary: The concentrations of the nucleotides AMP and IMP, the nucleosides adenosine, guanosine and inosine, the purine bases adenine, guanine, hypoxanthine and xanthine, urate, and the pyrimidine bases cytosine, thymine and uracil were determined by ...
M. Castro-gago, Rodríguez-Núñez, A., S. Rodriguez-segade, Castro-Gago, M., S. Lojo, Camiña, F., Rodríguez-Segade, S., F. Camina, Lojo, S., A. Rodriguez-nunez   +9 more
core   +1 more source

Effect of developmental changes on pharmacokinetics of drugs used in the treatment of infant acute lymphoblastic leukaemia—A comprehensive review

British Journal of Clinical Pharmacology, EarlyView.
While the event‐free survival (EFS) of children treated for acute lymphoblastic leukaemia (ALL) has improved greatly in the last decades, the EFS for patients diagnosed with ALL before the age of one is still under 50%. This outcome further decreases when infants have a rearrangement in the gene encoding histone‐lysine N‐methyltransferase 2A (KMT2A ...
Tirsa de Kluis, Leiah J. Brigitha, Lidwien M. Hanff, Alwin D. R. Huitema, Inge M. van der Sluis, Meta H. M. Diekstra   +5 more
wiley   +1 more source

Precision medicine in paediatrics: Progress and priorities

British Journal of Clinical Pharmacology, EarlyView.
Precision medicine is revolutionizing personalized healthcare, advancing both diagnostics and therapeutics at an unprecedented pace. Reviewing the paediatric applications of pharmacometrics, pharmacogenomics and advanced therapy medicinal products highlights not only the relevance of these exciting innovations to frontline care but also the significant
Nicola Husain, Claire Booth, Joseph F. Standing, Charlotte I. S. Barker   +3 more
wiley   +1 more source