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A pipeline for proteome-wide analysis of electrophile selectivity 蛋白质组范围内亲电试剂选择性分析的管道
IF 20.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-10-30 DOI: 10.1038/s41557-025-01906-9
Jeyun Jo, Matthew Bogyo
In the growing field of chemical proteomics, there is a need for general methods to map the reactivity profiles of covalent probes in complex proteomes. Now, a completely unbiased proteomic workflow has been developed that enables global characterization of the amino acid residues, chemically labelled by reactive electrophilic probes.
在化学蛋白质组学的发展中,需要一种通用的方法来绘制复杂蛋白质组中共价探针的反应性谱。现在,一种完全无偏倚的蛋白质组学工作流程已经开发出来,可以通过反应性亲电探针进行化学标记,对氨基酸残基进行全局表征。
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引用次数: 0
The human story of benzene 人类关于苯的故事。
IF 20.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-10-23 DOI: 10.1038/s41557-025-01976-9
Judy I. Wu
The discovery of benzene two centuries ago marked a turning point in chemistry. From contributing to the development of chemical bonding concepts, to its practical use in the chemical industry, the story of this ring-shaped molecule is a combination of curiosity, science, and human kindness.
两个世纪前苯的发现标志着化学的一个转折点。从促进化学键概念的发展,到它在化学工业中的实际应用,这个环状分子的故事是好奇心、科学和人类善良的结合。
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引用次数: 0
Azetidine amino acid biosynthesis by non-haem iron-dependent enzymes. 非血红素铁依赖性酶的氮杂苷氨基酸生物合成。
IF 21.8 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-10-21 DOI: 10.1038/s41557-025-01958-x
Yanan Du,Anyarat Thanapipatsiri,Jesús J Blancas Cortez,Xavier E Salas-Solá,Chi-Yun Lin,Amie K Boal,Carsten Krebs,J Martin Bollinger,Kenichi Yokoyama
Azetidine, a four-membered aza-cycle, is a crucial structure in many bioactive compounds and drugs. However, their biosynthesis is frequently enigmatic. Here we report the mechanism of azetidine amino acid (polyoximic acid) biosynthesis in the polyoxin antifungal pathway. Genetic, enzymological and structural experiments revealed that PolF is a member of haem-oxygenase-like dimetal oxidase and/or oxygenase (HDO) superfamily, and this enzyme alone is sufficient for the transformation of L-isoleucine (L-Ile) and L-valine to their azetidine derivatives via a 3,4-desaturated intermediate. Mechanistic studies of PolF suggested that a μ-peroxo-Fe(III)2 intermediate is directly responsible for the unactivated C-H bond cleavage, and the post-H-abstraction reactions, including the C-N bond formation, probably proceed through radical mechanisms. We also found that PolE, a member of the DUF6421 family, is an Fe and pterin-dependent oxidase that catalyses the desaturation of L-Ile, assisting PolF by increasing the flux of L-Ile desaturation. The results provide important insights into azetidine biosynthesis and the catalytic mechanisms of HDO enzymes in general.
氮杂环是一个四元氮杂环,是许多生物活性化合物和药物的重要结构。然而,它们的生物合成常常是神秘的。本文报道了氮杂啶氨基酸(多肟酸)生物合成在多毒素抗真菌途径中的作用机制。遗传、酶学和结构实验表明,PolF是血红加氧酶样二金属氧化酶和/或加氧酶(HDO)超家族的成员,该酶本身就足以通过3,4-去饱和中间体将l -异亮氨酸(L-Ile)和l -缬氨酸转化为它们的氮杂啶衍生物。对PolF的机理研究表明,μ-过氧化物- fe (III)2中间体直接导致了未活化的C-H键断裂,而h萃取后的反应,包括C-N键的形成,可能是通过自由基机制进行的。我们还发现,作为DUF6421家族的一员,PolE是一种铁和蝶呤依赖的氧化酶,它可以催化L-Ile的去饱和,通过增加L-Ile的去饱和通量来辅助PolF。这些结果为氮杂胞苷的生物合成和HDO酶的催化机制提供了重要的见解。
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引用次数: 0
Copper-catalysed asymmetric cross-coupling reactions tolerant of highly reactive radicals 铜催化的不对称交叉偶联反应耐受高活性自由基。
IF 20.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-10-20 DOI: 10.1038/s41557-025-01970-1
Li-Wen Fan, Jun-Bin Tang, Li-Lei Wang, Zeng Gao, Ji-Ren Liu, Yu-Shuai Zhang, Dai-Lei Yuan, Li Qin, Yu Tian, Zhi-Chao Chen, Fu Liu, Jin-Min Xiang, Pei-Jie Huang, Wei-Long Liu, Chen-Yu Xiao, Cheng Luan, Zhong-Liang Li, Xin Hong, Zhe Dong, Qiang-Shuai Gu, Xin-Yuan Liu
Achieving high enantioselectivity in asymmetric catalysis, especially with very reactive species such as radicals, often comes at the expense of generality. Radicals with exceptionally high reactivity are typically unsuitable for existing asymmetric methodologies. Here we present a general catalytic approach to asymmetric radical cross-coupling that combines copper-catalysed enantioselective stereocentre resolution or formation with copper-mediated, chirality-transferring radical substitution. This sequential strategy enables the efficient coupling of over 50 distinct carbon-, nitrogen-, oxygen-, sulfur- and phosphorus-centred radicals, including highly reactive methyl, tert-butoxyl and phenyl radicals, yielding structurally diverse C-, P- and S-chiral compounds with outstanding enantioselectivity. Our method thus provides a unified platform for the synthesis of carbon, phosphorus and sulfur stereocentres, with important implications for the preparation of chiral molecules relevant to medicinal chemistry and related disciplines. Furthermore, this sequential stereodiscrimination and chirality transfer strategy offers a promising blueprint for the development of highly enantioselective methodologies applicable to other classes of highly reactive species beyond radicals. Achieving generality in asymmetric catalysis with highly reactive radicals is a challenge. Now it is shown that a sequential copper-catalysed approach enables the efficient, enantioselective cross-coupling of over 50 diverse radicals, providing unified access to C-, P- and S-chiral products and advancing the asymmetric synthesis of challenging molecular architectures.
在不对称催化中实现高的对映体选择性,特别是对自由基等反应性很强的物质,往往是以牺牲通用性为代价的。具有极高反应活性的自由基通常不适合现有的不对称方法。在这里,我们提出了一种不对称自由基交叉偶联的一般催化方法,将铜催化的对映选择性立体中心分解或形成与铜介导的手性转移自由基取代相结合。这种顺序策略使50多种不同的碳、氮、氧、硫和磷自由基(包括高活性的甲基、叔丁基和苯基自由基)有效偶联,产生结构多样的C-、P-和s-手性化合物,具有出色的对映选择性。该方法为碳、磷、硫立体中心的合成提供了统一的平台,对药物化学及相关学科手性分子的制备具有重要意义。此外,这种顺序立体识别和手性转移策略为开发适用于自由基以外的其他高活性物质的高对映选择性方法提供了一个有希望的蓝图。
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引用次数: 0
A recursive enzymatic competition network capable of multitask molecular information processing 具有多任务分子信息处理能力的递归酶竞争网络。
IF 20.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-10-17 DOI: 10.1038/s41557-025-01981-y
Souvik Ghosh, Mathieu G. Baltussen, Anna C. Knox, Rianne Haije, Quentin Duez, Anastasia T. Tsitsimeli, Man Him Chak, Jonathon E. Beves, Wilhelm T. S. Huck
Living cells understand their environment by combining, integrating and interpreting chemical and physical stimuli. Despite considerable advances in the design of enzymatic reaction networks that mimic hallmarks of living systems, these approaches lack the complexity to fully capture biological information processing. Here we introduce a scalable approach to design complex enzymatic reaction networks capable of reservoir computation based on recursive competition of substrates. This protease-based network can perform a broad range of classification tasks based on peptide and physicochemical inputs and can simultaneously perform an extensive set of discrete and continuous information processing tasks. The enzymatic reservoir can act as a temperature sensor from 25 °C to 55 °C with 1.3 °C accuracy, and performs decision-making, activation and tuning tasks common to neurological systems. We show a possible route to temporal information processing and a direct interface with optical systems by demonstrating the extension of the network to incorporate sensitivity to light pulses. Our results show a class of competition-based molecular systems capable of increasingly powerful information-processing tasks. Designing enzymatic reaction networks capable of mimicking the complexity of biological information processing is challenging. Now, an in chemico reservoir sensor based on a recursive enzymatic competition network has been designed that can process diverse physical and chemical inputs and perform several information-processing tasks.
活细胞通过结合、整合和解释化学和物理刺激来理解它们的环境。尽管在模拟生命系统特征的酶促反应网络设计方面取得了相当大的进步,但这些方法缺乏完全捕获生物信息处理的复杂性。在这里,我们介绍了一种可扩展的方法来设计复杂的酶反应网络,能够基于底物的递归竞争进行储层计算。这种基于蛋白酶的网络可以执行基于肽和物理化学输入的广泛分类任务,并且可以同时执行广泛的离散和连续信息处理任务。酶库可以作为温度传感器,温度范围为25°C至55°C,精度为1.3°C,并执行神经系统常见的决策,激活和调整任务。我们展示了一种可能的时间信息处理和与光学系统直接接口的途径,通过展示网络的扩展来结合对光脉冲的敏感性。我们的研究结果显示,一类基于竞争的分子系统能够完成越来越强大的信息处理任务。
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引用次数: 0
Enantioselective light absorption drives kinetic resolution 对映选择性光吸收驱动动力学分辨率。
IF 20.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-10-16 DOI: 10.1038/s41557-025-01975-w
Jumreang Tummatorn, Charnsak Thongsornkleeb
Achieving enantioselectivity directly through light absorption is a long-standing challenge in photochemistry. Now, light can resolve racemic mixtures at the very moment of photon capture — enabling elegant kinetic resolution via chiral electron donor–acceptor complexes.
通过光吸收直接实现对映体选择性是光化学中一个长期存在的挑战。现在,光可以在光子捕获的瞬间分解外消旋混合物——通过手性电子供体-受体复合物实现优雅的动力学分解。
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引用次数: 0
Light-driven direct air capture of CO2 光驱动直接空气捕捉二氧化碳。
IF 20.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-10-16 DOI: 10.1038/s41557-025-01972-z
Benjamin A. Baker, Grace G. D. Han
The high energetic demand of direct air capture of CO2 challenges its large-scale, industrial application. Now, the use of a photo-base allows for reversible capture of atmospheric CO2 driven by sunlight-induced pH swings.
直接空气捕集二氧化碳的高能量需求对其大规模工业应用提出了挑战。现在,光基的使用允许由阳光诱导的pH值波动驱动的大气二氧化碳的可逆捕获。
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引用次数: 0
Making isolable halosilylium Lewis superacids by protonation 用质子化法制备可分离的卤硅路易斯超强酸。
IF 20.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-10-15 DOI: 10.1038/s41557-025-01992-9
Halogen-substituted silylium ions are among the strongest known Lewis superacids with promising synthetic applications, but their synthesis has not been possible using established methods for generating silicon cations. Now, a general approach to these elusive reactive intermediates is reported, based on the protonation of halosilanes with a Brønsted superacid.
卤素取代的硅离子是已知最强的路易斯超强酸之一,具有很好的合成应用前景,但它们的合成还不可能使用现有的方法来生成硅阳离子。现在,报道了一种研究这些难以捉摸的反应中间体的一般方法,该方法基于卤化硅烷与Brønsted超羧酸的质子化反应。
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引用次数: 0
Author Correction: Interfacial solvation pre-organizes the transition state of the oxygen evolution reaction. 作者更正:界面溶剂化预先组织了析氧反应的过渡态。
IF 20.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-10-15 DOI: 10.1038/s41557-025-01991-w
Ricardo Martínez-Hincapié, Janis Timoshenko, Timon Wagner, Eduardo Ortega, Jody Druce, Mariana C O Monteiro, Martina Rüscher, Joonbaek Jang, Elif Öykü Alagöz, Samuele Lasagna, Leon Jacobse, Arno Bergmann, Beatriz Roldan Cuenya, Sebastian Z Oener
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引用次数: 0
Water-detected NMR allows dynamic observations of repeat-expansion RNA condensates 水探测核磁共振允许重复膨胀的RNA凝聚物的动态观察。
IF 20.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-10-15 DOI: 10.1038/s41557-025-01968-9
Johannes Schmoll, Mihajlo Novakovic, Frédéric H-.T. Allain
RNA condensation is implicated in the formation of neurotoxic RNA foci in cells affected by genomic expansions of trinucleotide or hexanucleotide repeats. However, the biophysical properties of repeat-expansion RNA condensates are poorly understood. Using CAG repeat-expansion RNA as a model system, we show that these RNA condensates cannot be observed with conventional nuclear magnetic resonance techniques. Therefore, we developed a nuclear magnetic resonance approach, based on water-detected semi-solid magnetization transfer, to detect and characterize RNA condensates in vitro. Our method, termed condensate detection by semi-solid magnetization transfer (CONDENSE-MT), is broadly applicable, highly sensitive and does not require direct observation of the biomolecules of interest. Using CONDENSE-MT, we could obtain dynamic information about RNA condensates, such as the relative amount and the tumbling rate of condensed RNA, the proton–solvent exchange kinetics and the amount of water molecules transiently bound in the condensate. We find that phase separation dramatically decreases molecular tumbling and is driven by heterotypic interactions between RNA and Mg2+. We further show that increasing CAG repeats decreases condensate hydration. The condensation of repeat-containing RNAs can have neurotoxic effects but is challenging to study. Now a NMR approach termed condensate detection by semi-solid magnetization transfer (CONDENSE-MT) can be used to study RNA condensate dynamics, proton–solvent exchange kinetics and condensate hydration.
RNA缩合与受三核苷酸或六核苷酸重复序列基因组扩增影响的细胞中神经毒性RNA灶的形成有关。然而,重复膨胀RNA凝聚物的生物物理性质尚不清楚。使用CAG重复扩增RNA作为模型系统,我们发现这些RNA凝聚物不能用传统的核磁共振技术观察到。因此,我们开发了一种基于水检测半固体磁化转移的核磁共振方法,用于体外检测和表征RNA凝聚体。我们的方法,称为半固体磁化转移冷凝物检测(冷凝物- mt),广泛适用,高灵敏度,不需要直接观察感兴趣的生物分子。利用condenst - mt,我们可以得到有关RNA凝聚物的动态信息,如浓缩RNA的相对数量和翻滚速率、质子-溶剂交换动力学以及在凝聚物中短暂结合的水分子的数量。我们发现相分离极大地减少了分子翻滚,并且是由RNA和Mg2+之间的异型相互作用驱动的。我们进一步表明,增加CAG重复次数会降低冷凝水的水化作用。
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Nature chemistry
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