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作者：Mills, Carolyn E.
作者单位：University of California System; University of California Santa Barbara; University of California System; University of California Santa Barbara
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作者：Sayler, Richard I.; Thomas, William C.; Rose, Alexander J.; Marletta, Michael A.
作者单位：University of California System; University of California Berkeley; University of California System; University of California Berkeley; University of California System; University of California Berkeley
摘要：Polysaccharide monooxygenase (PMO) catalysis involves the chemically difficult hydroxylation of unactivated C-H bonds in carbohydrates. The reaction requires reducing equivalents and will utilize either oxygen or hydrogen peroxide as a cosubstrate. Two key mechanistic questions are addressed here: 1) How does the enzyme regulate the timely and tightly controlled electron delivery to the mononuclear copper active site, especially when bound substrate occludes the active site? and 2) How does th...
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作者：Chen, Xuexiang; Sun, Zejuan; Zhang, Shuhan; Lee, Gyoung - Ah; Nasu, Hiroo; Zhang, Fei; Cai, Haohong; Liu, Xu; Gao, Jixi; Zhu, Chao; Lang, Jianfeng; Zhao, Zhijun; Liu, Xinyi
作者单位：Shandong University; Shandong University; Anhui University; University of Oregon; Okayama University of Science; Chinese Academy of Social Sciences; Shandong University; Washington University (WUSTL)
摘要：Adzuki bean (Vigna angularis) is a key legume widely cultivated in East Asia, prized for both its nutritional value and nitrogen- fixing properties. This paper presents one of the oldest directly dated archaeological finds of adzuki bean, recovered from the Xiaogao site in Shandong, China, and dated to 8985- 8645 and 8032- 7939 cal. BP-predating previously known Chinese records by at least 4,000 y (approximately 6,000 y considering published directly dated evidence alone). The evidence suggest...
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作者：Lakhan, Shaheen E.; Wicks, Paul
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作者：Yin, Jie; Yang, Ke; Zhou, Chendi; Dang, Junhua
作者单位：Beijing Sport University; Beijing Sport University; Xi'an Jiaotong University; Uppsala University
摘要：Motor imagery (MI) engages neural systems that overlap with actual movement and is widely used in sport and rehabilitation. Yet conflicting findings suggest that experts show either reduced (neural efficiency) or increased (vivid simulation) brain activation during MI. We hypothesized that task complexity moderates this effect. Using fNIRS, we compared experts and novices during MI of simple versus complex soccer actions. Experts showed lower activation for simple tasks but higher activation f...
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作者：Wang, Yu; Li, Tang; Zheng, Yangjie; Guo, Chenxin; Li, Kuikui; Jia, Xiaochen; Zhu, Liping; Chen, Kecai; Yin, Heng
作者单位：Chinese Academy of Sciences; Dalian Institute of Chemical Physics, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
摘要：Steviol glycosides (SGs) from Stevia rebaudiana are prized as noncaloric sweeteners, with rebaudioside M (Reb M)-a next-generation SG known for its sucrose-like sweetness and lack of off-tastes-standing out for its superior sensory profile. However, Reb M's limited natural abundance impedes its commercial production. Here, we report the identification of a glucosyltransferase, UGT76G4 that efficiently catalyzes the conversion of Reb D to Reb M with a strong preference for C19 glycosylation. St...
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作者：Yao, McKenna Loop; Zill, Nicholas A.; Barber, Colin Charles; Du, Yongle; Lin, Peijun; Zhai, Rui; Yoon, Eunice; Al Marzooqi, Dunya; Zhang, Wenjun
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作者：Hanig, Lily; Harper, Corey D.; Nock, Destenie; Michalek, Jeremy J.
作者单位：Carnegie Mellon University; Carnegie Mellon University; Carnegie Mellon University; Carnegie Mellon University
摘要：We model the effect of plug-in electric vehicle (EV) adoption on U.S. power system generator capacity investment, operations, and emissions through 2050 by estimating power systems outcomes under a range of EV adoption trajectory scenarios. Our EV adoption scenarios are informed by 1) an Energy Information Administration scenario with no policy intervention, 2) EV growth expected under the Inflation Reduction Act (IRA), 3) a Biden Administration 50% EV sales target by 2030, 4) the Environmenta...
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作者：Kumar, Vrinda Ravi; Buddh, Shyamsunder; Singhal, Shivansh; Prakash, Arun; Agashe, Deepa
作者单位：Tata Institute of Fundamental Research (TIFR); National Centre for Biological Sciences (NCBS); Czech Academy of Sciences; Biology Centre of the Czech Academy of Sciences; Michigan State University
摘要：Evolutionary rescue helps populations survive environmental change, but the phenotypic and demographic factors associated with rescue dynamics and its long-term effects remain unclear. We experimentally evolved 10 wild-collected populations of flour beetles from across India in a suboptimal corn resource for 70 generations (>5 y), collecting >10,000 population census points book-ended by measurements of fitness-related traits for 30 experimental lines. Despite clear ancestral trait differences...
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作者：Ma, Zhibo; Zhou, Xi; Jia, Wenlong; Tan, Xiaosheng; Huang, Xia; Wang, Jingzeng; Sun, Lingjuan; Li, Qingwen; Zhao, Xiangli; Yuan, Naonao; Liu, Ping; Liu, Jing; Chen, Zhishui; Lan, Peixiang
