Results 81 to 90 of about 5,530,914 (307)

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Copper-Catalyzed Enantioconvergent Radical C(sp3)–N Cross-Coupling to Access Chiral α‑Amino-β-lactams

open access: yesPrecision Chemistry, 2023
Jing-Jing Zheng   +5 more
doaj   +1 more source

Total and partial photoneutron reactions cross sections – new analysis and evaluation

open access: yesEPJ Web of Conferences, 2012
The well-known problems of significant disagreements between partial photoneutron reactions (γ,n), (γ,2n) and (γ,3n) cross sections data obtained in various experiments are discussed.
Varlamov V.V.   +2 more
doaj   +1 more source

Wally and the Major [picture] : at cross purposes /

open access: yes, 1969
Part of the Stan Cross Archive of cartoons and drawings, 1912-1974.; Inscription: "Stan Cross 9/80"--In ink, lower right. "8953 Tue Apr 8. At Cross Purposes"--In ink, right margin; "8953"--In pencil, upper right corner.; Also available in an electronic ...
Cross, Stan, 1888-1977.
core  

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Synthesis of fluoroalkenes and fluoroenynes via cross-coupling reactions using novel multihalogenated vinyl ethers

open access: yesBeilstein Journal of Organic Chemistry
In this study, we develop the synthesis methods of fluoroalkenes and fluoroenynes via Suzuki–Miyaura and Sonogashira cross-coupling reactions using novel multihalogenated fluorovinyl ethers, which are easily prepared from the reaction between phenols and
Yukiko Karuo   +5 more
doaj   +1 more source

Recent Advances in Noble Metal Nanocatalysts for Suzuki and Heck Cross-Coupling Reactions

open access: yesMolecules, 2010
Since metal nanoparticles have a high surface-to-volume ratio and very active surface atoms, they are very attractive catalysts for a wide variety of organic and inorganic reactions, compared to bulk catalysts.
Radha Narayanan
doaj   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Organophosphates as Versatile Substrates in Organic Synthesis

open access: yesMolecules
This review summarizes the applications of organophosphates in organic synthesis. After a brief introduction, it discusses cross-coupling reactions, including both transition-metal-catalyzed and transition-metal-free substitution reactions. Subsequently,
Petr Oeser, Tomáš Tobrman
doaj   +1 more source

THE LATEST ADVANCEMENTS IN THE ACYLATION REACTIONS VIA CROSS-DEHYDROGENATIVE COUPLING AND/OR METAL CATALYSTS

open access: yesJournal of the Turkish Chemical Society, Section A: Chemistry, 2017
There are quite many examples in the scientific literature regarding the acylation reactions, especially the metal-catalyzed acylation reactions, metal-free acylation reactions, metal-catalyzed acylation via cross-dehydrogenative coupling (CDC) reactions
Soykan Ağar, Ömer Tahir Günkara
doaj   +1 more source

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