Results 11 to 20 of about 56,948 (266)

Actinorhodin Biosynthesis Terminates with an Unprecedented Biaryl Coupling Reaction

Angewandte Chemie, Volume 135, Issue 5, January 26, 2023., 2023
The last dimerization step of actinorhodin (ACT) biosynthesis was established through biochemical studies. ActVA‐ORF4 is a unique NAD(P)H‐dependent enzyme that catalyzes the biaryl‐coupling reaction using 8‐hydroxydihydrokalafungin (DHK‐OH) as the sole substrate. ActVA‐ORF3 is a quinone‐forming enzyme that forms DHK‐OH and ACT.
Makoto Hashimoto, Susumu Watari, Takaaki Taguchi, Kazuki Ishikawa, Takuya Kumamoto, Susumu Okamoto, Koji Ichinose   +6 more
wiley   +2 more sources

The Single‐Component Flavin Reductase/Flavin‐Dependent Halogenase AetF is a Versatile Catalyst for Selective Bromination and Iodination of Arenes and Olefins**

Angewandte Chemie, Volume 134, Issue 51, December 19, 2022., 2022
The single component flavin reductase/flavin dependent halogenase AetF catalyzes halogenation of a diverse set of substrates. High site selectivity, activity on relatively unactivated substrates, and high enantioselectivity for atroposelective bromination and bromolactonization was demonstrated.
Yuhua Jiang, Harrison M. Snodgrass, Yasmine S. Zubi, Caitlin V. Roof, Yanfei Guan, Dibyendu Mondal, Nicholas H. Honeycutt, Johnny W. Lee, Russell D. Lewis, Carlos A. Martinez, Jared C. Lewis   +10 more
wiley   +2 more sources

The Role of Cytochrome P450 AbyV in the Final Stages of Abyssomicin C Biosynthesis

Angewandte Chemie International Edition, Volume 62, Issue 3, January 16, 2023., 2023
The cytochrome P450 enzyme AbyV catalyses a key epoxidation in the final stages of the biosynthesis of the spirotetronate antibiotic abyssomicin C. Combining structural and computational data with a 13C labelling strategy was found to be a powerful approach to interrogate the biotransformation and determine the precise function of the enzyme.
Andrew J. Devine, Alice E. Parnell, Catherine R. Back, Nicholas R. Lees, Samuel T. Johns, Ainul Z. Zulkepli, Rob Barringer, Katja Zorn, James E. M. Stach, Matthew P. Crump, Martin A. Hayes, Marc W. van der Kamp, Paul R. Race, Christine L. Willis   +13 more
wiley   +1 more source

Whole blood NAD and NADP concentrations are not depressed in subjects with clinical pellagra [PDF]

, 2007
Population surveys for niacin deficiency are normally based on clinical signs or on biochemical measurements of urinary niacin metabolites. Status may also be determined by measurement of whole blood NAD and NADP concentrations. To compare these methods,
Cheung, E, Creeke, P I, Dibari, F, Kyroussis, E, Seal, A J, van den Briel, T   +5 more
core   +2 more sources

Cofactor regeneration by a soluble pyridine nucleotide transhydrogenase for biological production of hydromorphone [PDF]

, 2000
We have applied the soluble pyridine nucleotide transhydrogenase of Pseudomonas fluorescens to a cell-free system for the regeneration of the nicotinamide cofactors NAD and NADP in the biological production of the important semisynthetic opiate drug ...
Boonstra, B, Bruce, N C, French, C E, Rathbone, D A, Walker, E H   +4 more
core   +2 more sources

Inter-Organelle NAD Metabolism Underpinning Light Responsive NADP Dynamics in Plants

Frontiers in Plant Science, 2019
Upon illumination, photosystem I in chloroplasts catalyzes light-driven electron transport from plastocyanin to ferredoxin, followed by the reduction of NADP+ to NADPH by ferredoxin:NADP+ reductase for CO2 fixation.
Shin-nosuke Hashida, Maki Kawai-Yamada
doaj   +1 more source

Determinants of nucleotide-binding selectivity of malic enzyme. [PDF]

PLoS ONE, 2011
Malic enzymes have high cofactor selectivity. An isoform-specific distribution of residues 314, 346, 347 and 362 implies that they may play key roles in determining the cofactor specificity. Currently, Glu314, Ser346, Lys347 and Lys362 in human c-NADP-ME
Ju-Yi Hsieh, Meng-Chun Chen, Hui-Chih Hung   +2 more
doaj   +1 more source

Plasmodium falciparum glutamate dehydrogenase a is dispensable and not a drug target during erythrocytic development [PDF]

, 2011
<p>Background: Plasmodium falciparum contains three genes encoding potential glutamate dehydrogenases. The protein encoded by gdha has previously been biochemically and structurally characterized.
Aparicio, I., Engel, P.C., Llinas, M., Muller, S., Olszewski, K., Patzewitz, E.-M., Perner, J., Storm, J.   +7 more
core   +4 more sources

Nanomechanical Study of Enzyme: Coenzyme Complexes: Bipartite Sites in Plastidic Ferredoxin-NADP⁺ Reductase for the Interaction with NADP⁺

Antioxidants, 2022
Plastidic ferredoxin-NADP+ reductase (FNR) transfers two electrons from two ferredoxin or flavodoxin molecules to NADP+, generating NADPH. The forces holding the Anabaena FNR:NADP+ complex were analyzed by dynamic force spectroscopy, using WT FNR and ...
Sandra Pérez-Domínguez, Silvia Caballero-Mancebo, Carlos Marcuello, Marta Martínez-Júlvez, Milagros Medina, Anabel Lostao   +5 more
doaj   +1 more source

Identification and evolution of C4 photosynthetic pathway genes in plants

BMC Plant Biology, 2020
Background NADP-malic enzyme (NAPD-ME), and pyruvate orthophosphate dikinase (PPDK) are important enzymes that participate in C4 photosynthesis. However, the evolutionary history and forces driving evolution of these genes in C4 plants are not completely
Weiping Shi, Linqi Yue, Jiahui Guo, Jianming Wang, Xiangyang Yuan, Shuqi Dong, Jie Guo, Pingyi Guo   +7 more
doaj   +1 more source