Results 171 to 180 of about 64,361,212 (266)

Polyproline: A Synthetic Polypeptide With Unique Properties

open access: yesAngewandte Chemie, EarlyView.
Poly‐L‐proline is a unique polypeptide distinguished by its well‐defined secondary structures and unusual thermal behavior. This mini review highlights recent advances in the synthesis of poly‐L‐proline by N‐carboxyanhydride (NCA) polymerization, the formation of structurally defined architectures and nanostructures, and emerging strategies that ...
Rosanna Le Scouarnec   +3 more
wiley   +2 more sources

Anion–π Interaction‐Regulated Ion Generation and High Piezoionic Response in Ultrasoft Low‐Salinity Hydrogels

open access: yesAngewandte Chemie, EarlyView.
The first hydrogel system employing anion–π interactions as a central design motif is developed. The cooperative aromatic–phosphate interaction motif provides dynamic cohesion and is proposed to regulate the separation and transport of water‐derived ionic species, achieving high piezoionic response in injectable, self‐healing, ultrasoft, low‐salinity ...
Jinyang Jiang   +11 more
wiley   +2 more sources

A Conserved Isoleucine Gates the Diffusion of CO and O2 to the Active Site of NiFe CO‐Dehydrogenase

open access: yesAngewandte Chemie, EarlyView.
A combination of protein film electrochemistry and site‐directed mutagenesis shows that isoleucine 563 (numbering of Thermococcus sp. AM4) gates the arrival of both CO and O2 to the active site of the nickel‐iron CO dehydrogenases. Mutations at this position increase the resistance to O2 at the cost of a slower reaction with CO.
Laura Opdam   +7 more
wiley   +2 more sources

Red Light‐Gated Charge Transfer Enables Trace Oxygen Response in Dye‐Sensitized TiO2–Carbon Nanotube Hybrids

open access: yesAngewandte Chemie, EarlyView.
Light activation allows spatiotemporal control over materials, yet converting low‐energy red‐light excitation into chemically responsive electronic function remains challenging. Here we show that squaraine‐sensitized TiO2 domains embedded in single‐walled carbon nanotube networks generate a red‐light‐gated charge‐transfer state that reacts with O2 ...
Lionel Wettstein   +6 more
wiley   +2 more sources

Accroître la durabilité environnementale des salles d’opération au Canada : un guide de pratique clinique fondé sur des données probantes pour orienter les politiques. [PDF]

open access: yesCMAJ
Goldman J   +16 more
europepmc   +1 more source

Accessibility and Alignment of Trans‐Cleavage Substrates Modulate the Kinetics of Cas12a Ribonucleoprotein

open access: yesAngewandte Chemie, EarlyView.
Two key binding events that collectively determine the catalytic efficiency of trans‐cleavage: (1) the substrate passing through the gap between the REC and NUC domains, determined by Kpass, and (2) the alignment of the substrate with the catalytic triad of the ribonucleoprotein, determined by Kalign.
Jianyu Hu   +3 more
wiley   +2 more sources

Broad‐Spectrum, Cell Envelope‐Active Marinocyclin Antibiotics From a Coral‐Derived Bacterium Are Effective Against Colistin‐Resistant Bacteria

open access: yesAngewandte Chemie, EarlyView.
Marinocyclins, polycationic macrocyclic depsipeptides, were discovered by genome mining from the marine coral‐derived bacterium Aquimarina megaterium. The compounds have broad‐spectrum activity against gram‐positive and gram‐negative ESKAPE bacteria.
Clara Chepkirui   +9 more
wiley   +2 more sources

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