Results 61 to 70 of about 83,086 (267)

Deacetylation Followed by Fractionation of Yellow Poplar Sawdust for the Production of Toxicity-Reduced Hemicellulosic Sugar for Ethanol Fermentation

open access: yesEnergies, 2018
In order to produce bioethanol from yellow poplar sawdust without detoxification, deacetylation (mild alkali treatment) was performed with aqueous ammonia solution.
Seong Ju Kim   +2 more
doaj   +1 more source

Histone Modification Complex JMJ704‐HDA709 Negatively Regulates Salinity Tolerance in Rice

open access: yesAdvanced Science, EarlyView.
This study reveals that the rice histone demethylase JMJ704 interacts with HDA709―a H3K9ac deacetylase characterized herein―to form a chromatin‐modifying complex. Under salt stress, OsWRKY72 recruits this complex through interaction with JMJ704 to target loci, repressing the expression of oxidative stress and salt‐responsive genes via removal of ...
Jing Wang   +9 more
wiley   +1 more source

Chemoenzymatic Synthesis of Heparan Sulfate Oligosaccharides by a Covalent Catch‐and‐Release Approach

open access: yesAngewandte Chemie, EarlyView.
A glycan having a hydrazide tag enables chemoenzymatic synthesis of HS oligosaccharides. The hydrazide can, under mild acidic conditions, react with an aldehyde‐containing resin to give an immobilized hydrazone that is stable under neutral conditions, allowing washing. The product can be released by transiminolysis using aqueous hydroxylamine to give a
Francesco Palmieri   +4 more
wiley   +2 more sources

Regulation of adipogenesis by nucelar receptor PPARγ is modulated by the histone demethylase JMJD2C

open access: yesGenetics and Molecular Biology, 2011
A potential strategy to combat obesity and its associated complications involves modifying gene expression in adipose cells to reduce lipid accumulation.
Lizcano Fernando   +2 more
doaj  

Molecular Mobility of N‐Acetylgalactosamine‐Modified Cyclodextrins on a Polyrotaxane for Highly Efficient Liver Targeting of Antibody Chimeras and Genome‐Editing Ribonucleoproteins

open access: yesAdvanced Science, EarlyView.
Monovalent N‐acetylgalactosamine (GalNAc)‐modified polyrotaxane enables efficient liver targeting by utilizing ligand mobility. The sliding and rotating cyclic components i.e., cyclodextrin in the polyrotaxane dynamically cluster GalNAc moieties, thereby mimicking trivalent interactions with asialoglycoprotein receptors.
Toru Taharabaru   +6 more
wiley   +1 more source

Inhalable ROS‐Responsive Nanospray Activates PPAR‐γ to Restore Macrophage Mitochondrial Homeostasis and Attenuate Radiation‐Induced Lung Injury

open access: yesAdvanced Science, EarlyView.
A nebulized nanoassembly alleviates radiation‐induced lung injury by reprogramming macrophages through coordinated ROS scavenging, NAD+ replenishment, and PPAR‐γ activation. Redox balance, mitochondrial homeostasis, and immune regulation are restored, revealing a microenvironment‐centered strategy for localized radioprotection.
Mingquan Gao   +11 more
wiley   +1 more source

Design and Engineering of an Artificial Bifunctional N‐Deacetylase/N‐Sulfotransferase for the Biosynthesis of N‐Sulfated Heparosan

open access: yesAdvanced Science, EarlyView.
An artificial bifunctional N‐deacetylase/N‐sulfotransferase was engineered in Escherichia coli by combining screened N‐deacetylases with an NST domain. The integrated engineering strategy improved enzyme performance. The optimized enzyme efficiently converted heparosan into N‐sulfated heparosan, addressing a key bottleneck in microbial heparin ...
Xintong Xi   +8 more
wiley   +1 more source

DEACETYLATION OF BENZYL 6α-ACETOXYPENICILLANATE

open access: yesThe Journal of Antibiotics, 1973
Benzyl 6α-acetoxypenicillanate was transformed into benzyl 6α-hydroxypenicillanate by enzymatic cleavage of the acetyl group. The preparation of several side chain oxygen analogues of the penicillins is described.
S M, el-Din, K R, Henery-Logan
openaire   +3 more sources

Adaptive Responses of Tropical Crops: A Multi‐Scale Omics Integrated Perspective

open access: yesAdvanced Science, EarlyView.
Tropical crops integrate genomic, morphological, physiological, and ecological adaptations to thrive under extreme and variable environments. This review highlights how natural selection, domestication, and breeding shape stress resilience, resource‐use strategies, and productivity in sugarcane, banana, cassava, rubber and oil palm, offering new routes
Peilin Wang   +11 more
wiley   +1 more source

Epigenetics in Oncohematology: Brief Review

open access: yesКлиническая онкогематология, 2015
Objective. To discuss historical aspects of epigenetics as an independent branch of biology, as well as to describe post-translational modifications of DNA and histones (PTMs) as epigenetic events. Methods.
Anton Dmitrievich Shirin   +2 more
doaj   +1 more source

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