Results 121 to 130 of about 141,947 (341)

The three-dimensional structure of Clostridium absonum 7α-hydroxysteroid dehydrogenase: new insights into the conserved arginines for NADP(H) recognition

open access: yesScientific Reports, 2016
7α-hydroxysteroid dehydrogenase (7α-HSDH) can catalyse the oxidation of C7 α-OH of the steroid nucleus in the bile acid metabolism. In the paper we determined the crystal structure of 7α-HSDH from Clostridium absonum (CA 7α-HSDH) complexed with ...
D. Lou   +6 more
semanticscholar   +1 more source

Asymmetric Catalytic Hydrogenation toward a Value‐Added Chiral Building Block: Optically Active γ‐Butyrolactone Scaffold from Renewable and Synthetic Derived Feedstocks

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
This brief compendium summarizes the most successful asymmetric hydrogenation strategies for the preparation of chiral monocyclic γ‐lactone derivatives from keto acids and keto esters, with emphasis on their relevance for large‐scale production and high enatioselectivities. This article provides a brief compendium on the production of chiral monocyclic
Marta Feliz, Maria J. Sabater
wiley   +1 more source

Magnesium deficiency-induced changes in organic acid metabolism of Citrus sinensis roots and leaves

open access: yesBiologia Plantarum, 2013
Organic acid (OA) metabolisms are of fundamental importance but very limited data are available on the responses of plant OA metabolisms to Mg-deficiency. Seedlings of Citrus sinensis (L.) Osbeck cv. Xuegan were irrigated with Mg-deficient (0, 50, or 500
L.T. Yang   +5 more
doaj   +1 more source

The retina visual cycle is driven by cis retinol oxidation in the outer segments of cones [PDF]

open access: yes, 2017
Vertebrate rod and cone photoreceptors require continuous supply of chromophore for regenerating their visual pigments after photoactivation. Cones, which mediate our daytime vision, demand a particularly rapid supply of 11-cis retinal chromophore in ...
Cornwall, M. Carter   +3 more
core   +2 more sources

Determination of the Cytosolic NADPH/NADP Ratio in Saccharomyces cerevisiae using Shikimate Dehydrogenase as Sensor Reaction

open access: yesScientific Reports, 2015
Eukaryotic metabolism is organised in complex networks of enzyme catalysed reactions which are distributed over different organelles. To quantify the compartmentalised reactions, quantitative measurements of relevant physiological variables in different ...
Jinrui Zhang   +7 more
semanticscholar   +1 more source

The In Vitro Transgenic Rodent Assay in Primary MutaMouse Hepatocytes Compared to the Mammalian Cell Gene Mutation Assay Using the HPRT Gene

open access: yesEnvironmental and Molecular Mutagenesis, EarlyView.
ABSTRACT Gene mutations can be detected in mammalian cells in vitro using indicator genes such as the hypoxanthine‐guanine‐phosphoribosyltransferase (HPRT) gene. These assays have been adopted as OECD test guidelines (TG, e.g., OECD TG no. 476) and are used for regulatory purposes.
Alina Göpfert   +5 more
wiley   +1 more source

Regulation of pyruvate dehydrogenase complex: Dancing to different drums in cancer

open access: yesInternational Journal of Cancer, EarlyView.
Abstract Mechanisms governing the regulation of pyruvate dehydrogenase complex (PDC) are markedly modified in cancer cells compared to normal cells. PDC activity in normal cells is controlled by the reversible phosphorylation of three serine residues by dedicated kinases and phosphatases.
Mulchand S. Patel, Todd C. Rideout
wiley   +1 more source

Plastidial NADP-Malic Enzymes from grasses: unravelling the way to the C4 specific isoforms [PDF]

open access: yes, 2013
Malic enzyme is present in many plant cell compartments such as plastids, cytosol and mitochondria. Particularly relevant is the plastidial isoform that participates in the C4 cycle providing CO2 to RuBisCO in C4 species.
Alvarez, Clarisa Ester   +3 more
core   +2 more sources

A Versatile Disulfide-Driven Recycling System for NADP+ with High Cofactor Turnover Number

open access: yes, 2017
NADP+-dependent enzymes are important in many biocatalytic processes to generate high-value chemicals for the pharmaceutical and food industry; hence, a cost-effective, efficient, and environmentally friendly recycling system for the relatively expensive
Antonio Angelastro   +3 more
semanticscholar   +1 more source

Delineation of gastrointestinal tumors biopsies using a fluorescence lifetime imaging optical fiber probe

open access: yesJournal of Biophotonics, EarlyView.
The efficient discrimination of a hepatic cancer lesion and its surgical margin using autofluorescence lifetime imaging is presented. White light image of the specimen on the left and the augmented image with fluorescence lifetime data on the right.
D. Suraci   +9 more
wiley   +1 more source

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