316 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 in-source fragmentation (ISF) significantly inflates peptide identifications and risks data misinterpretation in proteomics, particularly for semi-tryptic and short peptides, and proposes a chromatographic retention time-based approach to detect and filter these artifacts to ensure data accuracy.
This study elucidates the molecular mechanism of SARS-CoV-2 neurotropism by resolving the cryo-EM structure and quantifying the nanomolar affinity interaction between the viral spike protein and the neuronal co-receptor contactin 1, revealing how the virus binds to the nervous system via a unique interface that overlaps with neutralizing antibody epitopes.
This study reveals that the bile salt glycocholate induces ToxS homodimerization through a strand-swapped mechanism, providing a structural model for how the ToxRS system senses bile to regulate virulence in *Vibrio* pathogens.
This study utilizes multiscale simulations to reveal that hydrogen-bonding changes within the active site, driven by mutations in the 5-6 loop, alter the dynamics and efficiency of imipenem deacylation and binding, thereby explaining the distinct hydrolytic activities observed among OXA-48 variants.
This study reveals that the catalytic efficiency of conserved metabolic enzymes does not follow a universal trend based on organismal complexity, but instead exhibits enzyme-specific and pathway-dependent variations driven by distinct context-specific selection pressures related to metabolic demand and regulatory needs.
This study demonstrates that non-fibrillar prion protein oligomers and transient assembly intermediates can store and transmit structural folding information through a modular mechanism involving a -sheet-rich scaffold, thereby expanding the prion paradigm beyond the classical model of fibril-end-mediated templating.
This study utilizes molecular dynamics simulations to demonstrate that while partial oxidation of SARS-CoV-2 membrane lipids has a negligible effect on spike protein anchoring, extensive oxidation significantly weakens this stability by disrupting lipid order and cholesterol clusters, suggesting that lipid peroxidation acts synergistically with mechanical forces to facilitate viral inactivation.
By employing ultrahigh-throughput fluorescence-activated droplet sorting with a bulky fluorogenic substrate, researchers successfully identified distal mutations in the enzyme LinB that enhance catalytic efficiency and alter specificity by modulating conformational dynamics and substrate access, demonstrating a powerful approach to uncovering functional adaptations difficult to predict through rational design.
This study introduces enantiomeric oxaziridine reagents to map stereospecific methionine oxidation sites across proteomes, demonstrating that chiral regulation of these modifications can allosterically inhibit protein function and amplify specific oxidative stress responses.
This study overcomes the limitations of standard computational tools like AlphaFold in modeling intrinsically disordered regions by employing an integrative approach that combines experimental crosslinking with multiple modeling techniques to elucidate the structural assembly of the human HDAC2:MIER1:MHAP1 chromatin remodeling complex.