Results 81 to 90 of about 81,016 (339)

Totalsynthese und Strukturkorrektur von (−)‐Sodagnitin E

Angewandte Chemie, EarlyView.
Das Malabarican‐Triterpen Sodagnitin E ist ein in verschiedenen Pilzen vorkommendes Chromogen. Die vorliegende Arbeit stellt sowohl die erste Totalsynthese von (−)‐Sodagnitin E als auch die erste Synthese eines Malabaricans überhaupt dar. Die konvergente Synthese basiert auf der Verknüpfung zweier enantioselektiv hergestellter Fragmente mittels ...
Philipp Schoch, Tanja Gaich
wiley   +1 more source

Modulation of riboflavin biosynthesis and utilization in mycobacteria

Microbiology Spectrum
Riboflavin (vitamin B2) is the precursor of the flavin coenzymes, FAD and FMN, which play a central role in cellular redox metabolism. While humans must obtain riboflavin from dietary sources, certain microbes, including Mycobacterium tuberculosis (Mtb),
Melissa D. Chengalroyen, Carolina Mehaffy, Megan Lucas, Niel Bauer, Mabule L. Raphela, Nurudeen Oketade, Digby F. Warner, Deborah A. Lewinsohn, David M. Lewinsohn, Karen M. Dobos, Valerie Mizrahi   +10 more
doaj   +1 more source

Screening of riboflavin kinase activity in microorganisms

Біологічні студії, 2009
The riboflavin kinase activity was measured in different species of bacteria, yeasts and molds. The activity of enzyme in eucaryotic microorganisms was mainly higher comparing to procaryotes.
I. S. Bilinska, L. R. Fayura, I. O. Mukalov, V. E. Kashchenko   +3 more
doaj   +1 more source

Total Synthesis and Structural Revision of (−)‐Sodagnitin E

Angewandte Chemie International Edition, EarlyView.
Malabaricane triterpenoid sodagnitin E is a chromogen found in various toadstools. This work represents the first total synthesis of (−)‐sodagnitin E as well as the first total synthesis of any malabaricane natural product. A Mukaiyama aldol reaction was utilized to perform a convergent synthesis from two enantioselectively synthesized fragments ...
Philipp Schoch, Tanja Gaich
wiley   +1 more source

Two Modes of Riboflavin-Mediated Extracellular Electron Transfer in Geobacter uraniireducens

Frontiers in Microbiology, 2018
Anaerobes respire extracellular electron acceptors by extracellular electron transfer (EET). It is widely recognized that flavins can act as electron shuttles to facilitate this process. Flavin synthesis genes are widely distributed in Geobacter species.
Lingyan Huang, Jiahuan Tang, Man Chen, Xing Liu, Shungui Zhou   +4 more
semanticscholar   +1 more source

Effects of Dietary Protein Level on Growth Performance, Serum Biochemistry, Intestinal Morphology, and Intestinal Microbiota in Ningxiang Finishing Pigs

Animal Research and One Health, EarlyView.
A low‐protein (LP) diet maintained growth performance while enhancing colonic microbiota composition and nitrogen utilization in Ningxiang finishing pigs. These findings enhance our understanding of protein nutrition in indigenous fat‐type pig breeds and provide a theoretical foundation for optimizing dietary formulations in Ningxiang pigs.
Xianglin Zeng, Wenzhi Liu, Zhaobin Wang, Kai Yang, Qiye Wang, Huansheng Yang   +5 more
wiley   +1 more source

Effect of Dietary Riboflavin Levels on Reproductive Performance of Pigeon Breeders, and Growth Performance and Carcass Traits of Offspring Squabs

Animals
This study aimed to investigate the effects of dietary riboflavin levels on the reproductive performance of pigeon breeders and the growth performance and carcass traits of offspring squabs to estimate the riboflavin requirement of pigeon breeders.
Bo Zhang, Yusheng Gao, Yuxin Shao, Li Shen, Wenli Liu, Haoxuan Li, Yipu Li, Jing Li, Tenghe Ma, Zheng Wang   +9 more
doaj   +1 more source

Overview of Encapsulated Lysine and Methionine and Their Impacts on Transition Cow Performance and Health

Animal Research and One Health, EarlyView.
The transition period in dairy cows, spanning 3 weeks before and after calving, is a critical phase characterized by increased nutrient demands, reduced dry matter intake (DMI), and elevated risk of metabolic disorders such as negative nutrient balance (NNB), lipolysis, proteolysis, and oxidative stress.
Mohammed S. Seleem, Samy A. Elsaadawy, Zhaohai Wu, Lu Ma, Todd R. Callaway, Dengpan Bu   +5 more
wiley   +1 more source

Mucosal‐Associated Invariant T Cells in Rheumatic Diseases

Arthritis &Rheumatology, EarlyView.
Mucosal‐associated invariant T (MAIT) cells are innate‐like T cells defined by their semi‐invariant T cell receptor and restriction by the major histocompatibility complex class I–related molecule (MR1). These cells are primarily activated by microbial‐derived metabolites presented by MR1 or by cytokines.
Manon Lesturgie‐Talarek, Virginie Gonzalez, Lucie Beaudoin, Noémie Sénot, Corinne Miceli‐Richard, Yannick Allanore, Agnès Lehuen, Jerôme Avouac   +7 more
wiley   +1 more source

Interruptible demyelination in avian riboflavin deficient neuropathy

Cell & Bioscience
Background and aims The evolution of demyelination in individual internodes remains unclear although it has been noticed the paranodal demyelination precedes internodal demyelination in neuropathies with diverse aetiologies.
Zhao Cai
doaj   +1 more source