Results 61 to 70 of about 21,656 (280)

In-situ measurements of the radiation stability of amino acids at 15-140 K [PDF]

2012, Icarus 220, 647-659, 2015
We present new kinetics data on the radiolytic destruction of amino acids measured in situ with infrared spectroscopy. Samples were irradiated at 15, 100, and 140 K with 0.8-MeV protons, and amino-acid decay was followed at each temperature with and without H$_2$O present.
arxiv   +1 more source

Comparison of Glucose, Acetate and Ethanol as Carbon Resource for Production of Poly(3-Hydroxybutyrate) and Other Acetyl-CoA Derivatives

Frontiers in Bioengineering and Biotechnology, 2020
Poly(3-hydroxybutyrate) (PHB) is a biodegradable and biocompatible thermoplastic, and synthesized from the central metabolite acetyl-CoA. The acetyl-CoA synthesis from glucose presents low atomic economy due to the release of CO2 in pyruvate ...
Shenmei Sun, Shenmei Sun, Yamei Ding, Min Liu, Mo Xian, Guang Zhao, Guang Zhao   +6 more
doaj   +1 more source

Development and Breeding of Herbicide‐Resistant Sorghum for Effective Cereal‐Legume Intercropping

Advanced Science, EarlyView.
This study identified two SbALS mutations (A93T and S624N) conferring robust herbicide resistance in sorghum, facilitating efficient weed control. Structural analysis revealed that imazamox resistance is mediated by disrupted herbicide binding. Furthermore, 126 imazamox resistant soybean varieties are screened for sorghum‐soybean intercropping ...
Sanyuan Tang, Jiayang Shi, Xuefeng Li, Mingliang Yang, Chao Li, Dan Zhang, Sen Yang, Cuo Mei, Zuyong Luo, Li Zhang, Wanke Zhang, Chunrui Zhang, Chenbo Zhu, Xiaowei Ma, Ran Xia, Yuhang Chen, Jinsong Zhang, Qingshan Chen, Shouyi Chen, Qi Xie, Feifei Yu   +20 more
wiley   +1 more source

Comparative analysis of two genomic regions among four strains of Buchnera aphidicola, primary endosymbiont of aphids.

, 2004
Preliminary analysis of two selected genomic regions of Buchnera aphidicola BCc, the primary endosymbiont of the cedar aphid Cinara cedri, has revealed a number of interesting features when compared with the corresponding homologous regions of the three ...
Gil, Rosario, Latorre, Amparo, Moya, Andrés, Pérez-Brocal, Vicente   +3 more
core   +1 more source

Photorespiration: metabolic pathways and their role in stress protection [PDF]

, 2000
Photorespiration results from the oxygenase reaction catalysed by ribulose-1,5-bisphosphate carboxylase/ oxygenase. In this reaction glycollate-2-phosphate is produced and subsequently metabolized in the photorespiratory pathway to form the Calvin ...
Anderson L. E., Astrid Wingler, C. B. Osmond, C. H. Foyer, Downton W. J. S., G. Bock, Kacser H., Koch K. E., Nakamura Y., Noctor G., Noctor G., Nour J. M., Nour J. M., Osmond C. B., Peter J. Lea, Richard C. Leegood, Richardson K. E., Ruban A.V., Tolbert N. E., W. Paul Quick, Walker R. R., Wingler A.   +21 more
core   +2 more sources

Lipidomic Analysis of Plastidial Octanoyltransferase Mutants of Arabidopsis thaliana

Metabolites, 2019
Plant de novo fatty acid synthesis takes place in the plastid using acetyl-coenzyme A (acetyl-CoA) as the main precursor. This first intermediate is produced from pyruvate through the action of the plastidial pyruvate dehydrogenase complex (PDH), which ...
Raquel Martins-Noguerol, Antonio Javier Moreno-Pérez, Sebastien Acket, Salim Makni, Rafael Garcés, Adrián Troncoso-Ponce, Joaquín J. Salas, Brigitte Thomasset, Enrique Martínez-Force   +8 more
doaj   +1 more source

Biocatalytic Isocitrate Production from Low‐Concentration Gaseous CO2 and Biobased 2‐Oxogultarate

Advanced Energy and Sustainability Research, EarlyView.
Biocatalytic isocitrate production from 2‐oxoglutarate and low‐concentration CO2 below 5% in the presence of NADPH and manganese ion was developed. Isocitrate dehydrogenase (IDH) from yeast (EC 1.1.1.42) is an enzyme that catalyzes the decarboxylating isocitrate into 2‐oxogurtarate and carbon dioxide and the reverse process of the introducing carbon ...
Masamichi Hino, Yutaka Amao
wiley   +1 more source

Probing the Catalytic Roles of Arg548 and Gln552 in the Carboxyl Transferase Domain of the \u3cem\u3eRhizobium etli\u3c/em\u3e Pyruvate Carboxylase by Site-directed Mutagenesis [PDF]

, 2010
The roles of Arg548 and Gln552 residues in the active site of the carboxyl transferase domain of Rhizobium etli pyruvate carboxylase were investigated using site-directed mutagenesis.
Adina-Zada, Abdussalam, Attwood, Paul V., Byrne, Lindsay, Cleland, W. Wallace, Duangpan, Saowapa, Jitrapakdee, Sarawut, Maurice, Martin St., Wallace, John C., Zeczycki, Tonya N.   +8 more
core   +1 more source

Diversity of ThDP‐Dependent Enzymes Forming Chiral Tertiary Alcohols

ChemBioChem, EarlyView.
Chiral tertiary alcohols are widespread in nature and bioactive compounds; however, their asymmetric synthesis faces several challenges. This review outlines the toolbox of ThDP‐dependent enzymes able to produce tertiary alcohols through the formation of CC bond formation using ketones as acceptor substrates. Herein, the substrate scope, the diversity
Daniela Bjarnesen, Lucrezia Lanza, Francesco Presini, Pier Paolo Giovannini, Michael Müller   +4 more
wiley   +1 more source

Reaction Engineering and Comparison of Electroenzymatic and Enzymatic ATP Regeneration Systems [PDF]

arXiv, 2023
Adenosine-5'-triphosphate (ATP) plays a crucial role in many biocatalytic reactions and its regeneration can influence the performance of a related enzymatic reaction significantly. Here, we established an electrochemically coupled ATP regeneration by pyruvate oxidase and acetate kinase (ACK) for the phosphorylation of mevalonate catalyzed by ...
arxiv