Results 71 to 80 of about 709,830 (296)
Nitrogenase and homologs [PDF]
JBIC Journal of Biological Inorganic Chemistry, 2014 Nitrogenase catalyzes biological nitrogen fixation, a key step in the global nitrogen cycle. Three homologous nitrogenases have been identified to date, along with several structural and/or functional homologs of this enzyme that are involved in nitrogenase assembly, bacteriochlorophyll biosynthesis and methanogenic process, respectively.
Hu, Yilin, Ribbe, Markus W
openaire +4 more sources
Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding
FEBS Letters, EarlyView.In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança +2 more
wiley +1 more source
Journal of Analytical Methods in ChemistryThis study developed a method for simultaneously detecting 10 mycotoxins in Dendrobium officinale using the QuEChERS technique combined with ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS). The method was optimized for
Zejun Wang +6 more
doaj +1 more source
Journal of Functional FoodsThis study investigated the phytochemical characteristics and first explored its anti-inflammatory action related to IBD of Chinese bayberry (Morella rubra Lour.) seed.
Dan Long +8 more
doaj +1 more source
Jurnal Fitopatologi Indonesia, 2017 Huanglongbing also known in Indonesia as citrus vein phloem degeneration (CVPD) is a devastating disease in citrus plantation worldwide, especially in Asia, Africa, and America.
Muhammad Rizal +2 more
doaj +1 more source
Homology stratifications and intersection homology [PDF]
Geometry & Topology Monographs, 1999 A homology stratification is a filtered space with local homology groups constant on strata. Despite being used by Goresky and MacPherson [Intersection homology theory: II, Inventiones Mathematicae, 71 (1983) 77-129] in their proof of topological invariance of intersection homology, homology stratifications do not appear to have been studied in any ...
Rourke, Colin, Sanderson, Brian
openaire +2 more sources
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
European Journal of Medical ResearchObjectives This study focuses on the preventive and therapeutic effects of Dihydroartemisinin (DHA) on Alzheimer’s disease (AD) model mice and the effects of DHA and donepezil on amyloid β-protein deposition and autophagy in nerve cells.
Gao Han +6 more
doaj +1 more source
Frontiers in Psychology, 2018 The test for item level cluster bias examines the improvement in model fit that results from freeing an item's between level residual variance from a baseline model with equal within and between level factor loadings and between level residual variances ...
Nigel Guenole
doaj +1 more source
FEBS Letters, EarlyView.Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil +3 more
wiley +1 more source