277 papers
Biochemistry explores the intricate chemical processes that power life, bridging the gap between biology and chemistry to explain how molecules like proteins and DNA function within living cells. This field reveals the molecular machinery behind everything from metabolism to genetic inheritance, turning complex biological mysteries into understandable chemical interactions.
On Gist.Science, we bring you the freshest discoveries in this dynamic area directly from bioRxiv. Our team processes every new preprint uploaded to the server, transforming dense academic findings into both clear, plain-language overviews and detailed technical summaries. This dual approach ensures that whether you are a curious beginner or a seasoned researcher, you can grasp the significance of these breakthroughs immediately.
Below are the latest papers in biochemistry, complete with our curated summaries to help you navigate the cutting edge of molecular science.
This study reveals that the essential DNA repair enzyme APE1 achieves high catalytic efficiency through a novel "moving metal ion" mechanism, where orchestrated Mg2+ repositioning and a distal hydrogen-bonding network enable concerted catalysis without a pentavalent intermediate, offering new insights for designing cancer inhibitors.
This study elucidates the mechanism of the Enterococcus faecalis cytolysin toxin by presenting its first high-resolution cryo-EM structure, which reveals how its two subunits form ordered tubular assemblies to disrupt both eukaryotic and bacterial cell membranes.
The paper introduces FragDockRL, a reinforcement learning framework that combines building block assembly with tethered docking to efficiently explore synthetically constrained chemical space and prioritize high-scoring, structurally diverse ligand candidates for specific protein targets.
This study reveals that the neofunctionalized, metal-flexible superoxide dismutase (camSOD) in *Staphylococcus aureus* has evolved greater structural stability and a larger, more exchange-resistant core compared to its ancestral manganese-dependent counterpart, indicating that distinct biochemical properties underwent rapid, concomitant evolutionary change during the enzyme's divergence.
This study establishes a sensitive, label-free workflow capable of quantifying chondroitin sulphate disaccharides from just 25 µL of human milk, overcoming previous volume limitations to enable GAG profiling from microgram samples such as neonatal salvage collections.
This study elucidates how the cysteine-rich domain (CRD) mediates divergent, isoform-specific mechanisms for RAS recruitment and RAF autoinhibition relief in CRAF and ARAF, providing new insights into the biophysical principles governing MAPK pathway activation and the impact of KRAS-targeted therapeutics.
This study elucidates the anti-inflammatory mechanism of isoliquiritigenin from *Glycyrrhiza uralensis* by demonstrating that it covalently inhibits lipocalin-type prostaglandin D2 synthase (L-PGDS) via its -unsaturated carbonyl moiety, thereby suppressing prostaglandin D2 production and interleukin-6 expression.
By integrating stable isotope-assisted computational mass spectrometry with molecular networking on 13C-labeled Glycyrrhiza tissues, researchers characterized the plant's root-specific metabolome and discovered novel homopipecolic acid-conjugated flavonoid alkaloids, validating their structures and proposing a unique biosynthetic pathway.
By analyzing large-scale molecular dynamics data from the mdCATH database, this study classifies six -turn types—including a newly identified hybrid I/I' intermediate—and demonstrates how specific amino acid sequences and flanking structural contexts jointly govern their conformational dynamics and flexibility.
By engineering the hydrophobic pocket of arylmalonate decarboxylase (AMDase), researchers successfully expanded its substrate scope to synthesize (R)-enantiomers of sterically hindered alpha-aryl and alpha-alkenyl carboxylic acids with exquisite enantiopurity.