PPN Pyrophosphate: A New Reagent for the Preparation of Nucleoside Triphosphates
摘要:
Tris{bis(triphenylphosphoranylidene) ammonium} (PPN) pyrophosphate was accessed via aqueous precipitation and desiccation. The reagent was investigated as a replacement for highly hygroscopic alkylammonium salts in Ludwig-Yoshikawa reactions for the preparation of nucleoside-5 '-triphosphates.
Real-time enzymatic studies are gaining importance as their chemical and technical instrumentation improves. Here we report the efficient synthesis of gamma-alkyne modified triphosphate amidates that are converted into a variety of gamma-fluorophore labeled triphosphates by Cu(I) catalyzed alkyne/azide click reactions. The synthesized triphosphates are incorporated into DNA by DNA polymerases.
Flexibility of Substrate Binding of Cytosine-5′-Monophosphate-N-Acetylneuraminate Synthetase (CMP-Sialate Synthetase) from Neisseria meningitidis: An Enabling Catalyst for the Synthesis of Neo-sialoconjugates
作者:Ning He、Dong Yi、Wolf-Dieter Fessner
DOI:10.1002/adsc.201100412
日期:2011.9
sensitive and reliable quantification of cytosine‐5′‐monophosphate‐acetylneuraminate synthetase (CMP‐sialate synthetase, CSS) activity based on the pH change of a released proton equivalent upon nucleotide activation of Neu5Ac or related analogues. Using this method, steady‐state kinetic data of Neisseria meningitidis CSS were determined for cytosine‐5′‐triphosphate (CTP), N‐acetylneuraminic acid (Neu5Ac)
Nucleoside selectivity of
<i>Aspergillus fumigatus</i>
nucleoside‐diphosphate kinase
作者:Stephanie Nguyen、Blagojce Jovcevski、Tara L. Pukala、John B. Bruning
DOI:10.1111/febs.15607
日期:2021.4
binding free energy change (−37.0 ± 3.5 kcal·mol−1). Comparatively, cytidine nucleosides displayed the slowest turnover rate (53.1 ± 3.7 s−1) and lowest specificity constant (40.2 ± 4.4 mm−1·s−1). We conclude that NDK exhibits nucleoside selectivity whereby adenine nucleosides are used preferentially compared to cytidine nucleosides, and these insights can be exploited to guide drug design.
烟曲霉感染与抗真菌药耐药率呈令人不安的上升趋势。由于对烟曲霉繁殖的基本生物学和结构机理的了解有限,阻碍了开发新型抗真菌药的努力。NDK催化NTP的生物合成,DNA和DNA的组成部分。NDK是烟曲霉中的必不可少的酶,是新型抗真菌药的诱人靶标。NDK在嘌呤和嘧啶中均表现出跨物种的广泛底物特异性,但这类核苷酸在烟曲霉中的选择性NDK未知,阻碍了结构导向抑制剂的设计。解决了未结合和未结合NDP的NDK结构,并在存在各种NTP底物的情况下评估了NDK的活性。我们呈现了独特的底物结合模式的第一个实例,该模式由烟曲霉NDK特有的CDP和TDP采用,阐明了选择性的结构决定因素。对低聚状态的分析表明,烟曲霉NDK在未结合和与NDP结合状态均采用六聚体组装,这与以前的报道表明它是四聚体相反。动力学分析表明,ATP具有最大的周转率(321±33.0 s -1),特异性常数(626±110.0 m m -1 ·s
One-pot synthesis of nucleotides in water medium
作者:Anaïs Depaix、Suzanne Peyrottes、Béatrice Roy
DOI:10.1080/10426507.2018.1541239
日期:2019.5.27
Abstract We developed a one-pot two-steps approach in an aqueous medium to synthesize nucleoside 5’-di- and 5’-triphosphates, dinucleoside 5’,5’-polyphosphates as well as some nucleotideanalogs modified either on the nucleoside or on the phosphate moieties. The attractive features of this strategy include absence of protecting groups on the starting material and convenient set-up (i.e., use of water
Generation of cytidine 5′-triphosphate using adenylate kinase
作者:Ethan S. Simon、Mark D. Bednarski、George M. Whitesides
DOI:10.1016/s0040-4039(00)86666-6
日期:1988.1
A membrane-enclosed enzyme reactor containing adenylate kinase (E.C. 2.7.4.3, rabbit muscle) and pyruvatekinase (E.C. 2.7.1.40) converts cytidine 5′-monophosphate (CMP) and phosphoenolpyruvate (PEP) to cytidine 5′-triphosphate (CTP) and pyruvate on a gram scale.