Results 121 to 130 of about 68,403 (337)

Engineered Fusion Enzyme‐Mediated Non‐Consecutive Cyclization‐Glycosylation Enables Heterologous Synthesis of Antifungal Enfumafungin

Advanced Science, EarlyView.
The artificial biosynthetic pathway potentially involved in biosynthesis of enfumafungin is first reconstructed in an optimized Aspergillus oryzae chassis with the increased site‐specific integration efficiency and shortened time for marker recycling, which requires an artificial fusion enzyme EfuA(TC)FsoA(GT).
Yaohui Gao, Jianming Lv, Yue Zhong, Zhiqin Cao, Rui Luo, Yue Qi, Gaoqian Wang, Shaoyang Li, Guodong Chen, Dan Hu, Hao Gao, Xinsheng Yao   +11 more
wiley   +1 more source

The Chemical Evolution of the Milky Way

, 1999
The field of chemical evolution modeling of the Galaxy is experiencing in the last years a phase of high activity and important achievements. There are, however, several open questions which still need to be answered. In this review I summarize what have
A Pasquali, A Renzini, AA Penzias, AI Boothroyd, B Barbuy, B Edvardsson, C Chiappini, CG Lacey, E Anders, F Matteucci, Forestini, JM Scalo, LB van den Hoek, M Tosi, M Tosi, M Tosi, M Tosi, N Prantzos, P Kroupa, PA Shaver, R Wielen, Rocha, S Boissier, S Smartt, SE Woosley, T.C. Beers, WJ Maciel, WJ Maciel   +27 more
core   +1 more source

CDH1 Orchestrates Anabolic Events to Promote Cell Cycle Initiation

Advanced Science, EarlyView.
Cell proliferation requires the integration of cell cycle and anabolic signals. G1‐phase regulator CDH1 coordinates anabolism through the CDH1‐VHL‐AARS2/HIF1α axis, while CDH1‐accumulated R5P is sensed by TKTL1 to facilitate CDH1 degradation and cell cycle initiation, constituting a CDH1‐centered regulatory circuit.
Yun‐Zi Mao, Jiao‐Jiao Zhang, Meng‐Qi You, Han Wang, Yan Lin, Yuan Fang, Hui‐Lu Zhang, Yuan‐Yuan Qu, Qian Zhou, Meng Wang, Gang Li, Zi‐Fan Guo, Meng Xu, Jie Liu, Peng‐Cheng Lin, Yi‐Yuan Yuan, Yu Kang, Shi‐Min Zhao, Wei Xu   +18 more
wiley   +1 more source

Impact des modes de gestion de la fertilité du sol et des systèmes de cultures sur la nutrition azotée et les rendements du mil (Pennisetum glaucum (L.) R. Br.) au Niger [PDF]

Tropicultura, 2016
Impact of Soil Fertility Management Practices and Cropping systems on Nitrogen Nutrition and Yields of Millet (Pennisetum glaucum (L.) R.Br.) in Niger. To identify the best methods of soil fertility management in Sahel conditions, the following objects ...
Hamidou, Z., Mahamane, S., Payne, WA., Sedogo, M., Lompo, F., Nacro, HB.   +5 more
doaj  

Double isotope dilution derivative assay of digitoxin in plasma, urine, and stool of patients maintained on the drug. [PDF]

, 1966
Davorka Lukas, Ralph E. Peterson
openalex   +1 more source

CO Line Emission and Absorption from the HL Tau Disk: Where is all the dust?

, 2005
We present high-resolution infrared spectra of HL Tau, a heavily embedded young star. The spectra exhibit broad emission lines of hot CO gas as well as narrow absorption lines of cold CO gas. The column density for this cooler material (7.5+/-0.2 x 10^18
Carr J. S., Craig Kulesa, Monin J. L., Sean D. Brittain, Terrence W. Rettig, Theodore Simon, Whittet D. C. B., Whittet D. C. B.   +7 more
core   +1 more source

Three‐Step Pulse Strategy Enhances Ultradilute Nitrate‐to‐Ammonia Conversion via Microenvironment and Mass Transfer Control

Advanced Science, EarlyView.
Electrochemical treatment of low‐concentration nitrate in wastewater is challenging. This study introduces a three‐step pulsed method that achieves near‐perfect efficiency in converting ultradilute nitrate to ammonia. Combined experiments and simulations reveal how pulsed strategy boost kinetics while suppressing competing reactions.
Kouer Zhang, Gang Liu, Qing Wang, Xiaoyu Huo, Xiaohong Zou, Mingcong Tang, Xiao Zhang, Liang An   +7 more
wiley   +1 more source

OsNRT1.1B‐OsCNGC14/16‐Ca2+‐OsNLP3 Pathway: Phosphorylation‐Mediated Maintenance of Nitrogen Homeostasis

Advanced Science, EarlyView.
OsNRT1.1B forms a membrane complex with OsCNGC14/16 that mediates nitrate‐triggered calcium influx. This calcium signal phosphorylates OsNLP3 at Ser193, accelerating its nuclear translocation and activating nitrogen‐responsive genes. The calcium‐dependent pathway complements the established ubiquitination‐mediated pathway, dynamically regulating ...
Xiaohan Wang, Yongqiang Liu, Weiwei Li, Xiaojun Ma, Wei Wang, Zhimin Jiang, Yiqin Wang, Legong Li, Bin Hu, Chengcai Chu   +9 more
wiley   +1 more source

Isotope determination of sulfur by mass spectrometry in soil samples Determinação isotópica de enxofre por espectrometria de massas (irms) em amostras de solo

Revista Brasileira de Ciência do Solo, 2012
Sulphur plays an essential role in plants and is one of the main nutrients in several metabolic processes. It has four stable isotopes (32S, 33S, 34S, and 36S) with a natural abundance of 95.00, 0.76, 4.22, and 0.014 in atom %, respectively. A method for
Alexssandra Luiza Rodrigues Molina Rossete, Josiane Meire Toloti Carneiro, Carlos Roberto Sant Ana Filho, José Albertino Bendassolli   +3 more
doaj  

Evidence for O-atom exchange in the O(^1D) + N_2O reaction as the source of mass-independent isotopic fractionation in atmospheric N_2O [PDF]

, 2004
Recent experiments have shown that in the oxygen isotopic exchange reaction for O(^1D) + CO_2 the elastic channel is approximately 50% that of the inelastic channel [Perri et al., 2003].
Blake, Geoffrey A., Liang, Mao-Chang, Miller, Charles E., Muller, Richard P., Yung, Yuk L.   +4 more
core