Results 101 to 110 of about 4,121,048 (281)

Lewis Acid‐Catalyzed Strain‐Enabled (3+3) Annulation of Bicyclo[1.1.0]Butanes With Indolylalcohols: Synthesis of Indole‐Fused Aza‐Bicyclo[3.1.1]Heptanes

open access: yesAdvanced Science, EarlyView.
Bicyclo[1.1.0]butanes undergo a Lewis acid‐catalyzed formal (3 + 3) annulation with indolyl alcohols to furnish indole‐fused aza‐bicyclo[3.1.1]heptanes. Strain‐release‐driven C‐C bond formation, followed by C‐N bond formation via ring expansion, enables the rapid assembly of rigid, sp3‐rich bicyclic architectures under mild reaction conditions ...
Mainak Dey   +4 more
wiley   +1 more source

Switching ATP‐Forming Phosphoryl‐Transfer Chemistry With a Restricted Set of Amino Acids

open access: yesAngewandte Chemie, EarlyView.
Constraints on amino acid composition relevant to prebiotic chemistry reshape enzyme chemistry by replacing the canonical mechanism within a conserved protein fold with a distinct ATP‐forming reaction, ADP disproportionation. Such constraints generate alternative catalytic solutions not observed in modern enzymes and point to chemically plausible early
Sota Yagi   +3 more
wiley   +2 more sources

Unusual traits shape the architecture of the Ig ancestor molecule

open access: yesCommunications Biology
Understanding the ancestral Ig domain’s molecular structure and tracing the evolution of Ig-like proteins are fundamental components missing from our comprehension of their evolutionary trajectory and function.
Alejandro Urdiciain   +6 more
doaj   +1 more source

Two-dimensional pixel array image sensor for protein crystallography [PDF]

open access: yes, 1996
A 2D pixel array image sensor module has been designed for time resolved Protein Crystallography. This smart pixels detector significantly enhances time resolved Laue Protein crystallography by two to three orders of magnitude compared to existing ...
Beuville, E., Beche, J.-F., Cork, C.
core   +1 more source

Crystal Structure Prediction of Inorganic Materials: A Benchmark and Modern Evaluation

open access: yesAdvanced Intelligent Discovery, EarlyView.
Predicting a crystal’s structure from composition alone is a long‐standing challenge in materials discovery. The CSP180 benchmark of 180 inorganic crystals evaluates thirteen crystal structure prediction algorithms requiring no density functional theory (DFT) against DFT‐based baselines across twelve metrics.
Lai Wei   +9 more
wiley   +1 more source

Time‐Resolved Multidimensional NMR Spectroscopy Reveals the Bifurcated Folding Pathway of a Thrombin‐Binding DNA G4–Azobenzene Derivative Complex

open access: yesAngewandte Chemie, EarlyView.
A photoswitchable ligand was used to trigger conformational changes within the thrombin binding aptamer DNA G‐Quadruplex. These reversible ligand driven rearrangements were examined by time‐resolved NMR experiments to gain insight of the dynamic folding landscape of the G‐quadruplex.
Jason Martins   +2 more
wiley   +2 more sources

Microfluidics-Based Strategies for Protein Crystallography [PDF]

open access: yes, 2009
Protein crystallography is an invaluable tool for the study of biological processes at the molecular level. While several crystallization techniques are actively pursued in both academic and industrial laboratories to produce high-quality protein ...
Megan J. Anderson, Anderson, Megan Jo
core   +1 more source

In Vitro Selection of Functional Neoproteins Containing Highly Fluorinated Cores

open access: yesAngewandte Chemie, EarlyView.
The generation of neoproteins—functional proteins containing unnatural amino acids—is a key goal in synthetic biology. We develop a platform to discover neoproteins with specified bioactivity from trillion‐member sequence libraries, using genetic code reprogramming, in vitro selection and microwave peptide synthesis.
Adam Beattie   +5 more
wiley   +2 more sources

Deciphering the initiation pathway of CagT4SS assembly by in vitro reconstitution of subcomplexes

open access: yesNature Communications
Cag type IV secretion system (CagT4SS) mediates the translocation of diverse substrates and is critical for the Helicobacter pylori pathogenesis. Its assembly is initiated by the central cylinder comprising CagX, CagY and CagM, however, the order and ...
Hoi Yee Chu   +5 more
doaj   +1 more source

Biocrystallography in Switzerland: Achievements and Future Perspectives

open access: yesCHIMIA, 2014
The first protein crystallography group in Switzerland was installed at the Biozentrum of the University of Basel approximately 40 years ago.
Markus G. Grütter
doaj   +1 more source

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