Results 81 to 90 of about 38,610 (331)

Update: Enzymatische Synthese für industrielle Anwendungen

open access: yesAngewandte Chemie, EarlyView.
Die Biokatalyse hat sich zu einer nachhaltigen und wettbewerbsfähigen Alternative zur herkömmlichen chemischen Synthese entwickelt und ermöglicht die enzymbasierte Herstellung nicht nur von chemischen Grundstoffen, sondern auch von (nicht natürlichen) Aminosäuren, (seltenen) Zuckern und synthetischen Nukleotiden.
Thomas Bayer   +4 more
wiley   +1 more source

Chromatin and oxygen sensing in the context of JmjC histone demethylases [PDF]

open access: yes, 2014
Responding appropriately to changes in oxygen availability is essential for multicellular organism survival. Molecularly, cells have evolved intricate gene expression programmes to handle this stressful condition.
Abidi   +139 more
core   +4 more sources

Oxygen Activation by Mononuclear Mn, Co, and Ni Centers in Biology and Synthetic Complexes [PDF]

open access: yes, 2017
The active sites of metalloenzymes that catalyze O2-dependent reactions generally contain iron or copper ions. However, several enzymes are capable of activating O2 at manganese or nickel centers instead, and a handful of dioxygenases exhibit activity ...
Fiedler, Adam T., Fischer, Anne A.
core   +1 more source

Catalysts on Demand: Selective Oxidations by Laboratory-Evolved Cytochrome P450 BM3 [PDF]

open access: yes, 2009
Efficient catalysts for selective oxidation of C-H bonds using atmospheric oxygen are highly desirable to decrease the economic and environmental costs associated with conventional oxidation processes.
Arnold, Frances H., Lewis, Jared C.
core   +2 more sources

Mixing and Matching of Hybrid Megasynthases is a Hub for the Evolution of Metabolic Diversity in Cyanobacteria

open access: yesAngewandte Chemie International Edition, EarlyView.
Natural combinatorics: Evolutionary mixing and matching of three cyanobacterial biosynthetic gene clusters resulted in the emergence of minutumamides, a novel family of peptide‐polyketide hybrids. Retro‐evolutionary analysis led to the discovery of nostopeptolide KVJ3, an evolutionary ancestor that links nostopeptolide and minutumamide biosynthesis and
Keishi Ishida   +6 more
wiley   +1 more source

Enzymological and structural characterization of Arabidopsis thaliana heme oxygenase‐1

open access: yesFEBS Open Bio, 2022
Arabidopsis thaliana heme oxygenase‐1 (AtHO‐1), a metabolic enzyme in the heme degradation pathway, serves as a prototype for study of the bilin‐related functions in plants.
Jia Wang   +6 more
doaj   +1 more source

First Record of \u3ci\u3eAphis Helianthi\u3c/i\u3e (Homoptera: Aphididae) as a Pest of Celery [PDF]

open access: yes, 2017
In 1989, the aphid Aphis helianthi severely damaged five of 10 scouted celery fields in west central Michigan. In 1990 and in 1991, A. helianthi again was a problem. reaching pestiferous levels in three of 10 and two of 10 scouted fields.
Davis, M. G. Kortier, Grafius, E.
core   +2 more sources

Haem oxygenase: a reappraisal of the stoicheiometry

open access: yesFEBS Letters, 1979
Haem oxygenase (EC 1.14.99.3) in rat liver microsomes was first described as a mixed function oxidase utilising cytochrome P-450 [I]. Immunochemical studies suggest that NADP(H)-cytochrome c reductase activity is an essential component of the enzyme [2]. Indeed, it has been suggested [3] following the use of partially purified enzyme preparations, that
Owen T.G. Jones   +2 more
openaire   +3 more sources

Engineering of Transmembrane Alkane Monooxygenases to Improve a Key Reaction Step in the Synthesis of Polymer Precursor Tulipalin A

open access: yesAngewandte Chemie International Edition, EarlyView.
A biosynthesis route for the polymer precursor tulipalin A starting from isoprenyl acetate is proposed. The alkane monooxygenase AlkB catalyzes the chemoselective terminal hydroxylation of isoprenyl acetate. Rational enzyme engineering further increased the activity of the membrane enzyme.
Andrea Nigl   +11 more
wiley   +1 more source

Distribution and diversity of enzymes for polysaccharide degradation in fungi

open access: yesScientific Reports, 2017
Fungi are important polysaccharide degraders in the environment and for biotechnology. Here, the increasing number of sequenced fungal genomes allowed for systematic identification of genes and proteins involved in polysaccharide degradation in 218 fungi.
Renaud Berlemont
doaj   +1 more source

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