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.
NPannotator is an automated, genome- and chemistry-constrained pipeline that elucidates type I polyketide synthase pathways by inferring catalytic gene ordering and acyltransferase substrate specificities through iterative cheminformatics matching against a database of synthetic polyketide backbones.
This study elucidates the hierarchical physicochemical mechanism by which the cytosolic iron-sulfur cluster assembly targeting complex (CTC) recognizes diverse C-terminal tripeptide motifs through a specific aromatic pocket and hydrophobic groove at the Cia1-Cia2 interface, thereby defining the molecular grammar for selective Fe-S protein maturation.
This study identifies endogenous nucleophilic metabolites, such as taurine and spermidine, as direct scavengers of reactive acyl species that neutralize carbon stress, thereby preventing aberrant protein acylation and extending lifespan in model organisms.
The authors developed and validated a robust, high-throughput fluorescence polarization assay using a novel tracer (KP-SC-1) to efficiently screen for both NAD+-dependent and independent SIRT1-3 inhibitors while significantly reducing enzyme consumption compared to previous methods.
This study reveals that cardiac calsequestrin (CASQ2) is an intrinsic dimer that undergoes a highly cooperative, Ca2+-triggered polymerization switch modulated by K+ ions, providing a mechanistic framework for understanding how its mutations cause catecholaminergic polymorphic ventricular tachycardia type 2 through distinct pathological trajectories.
This study demonstrates that the mitochondrial enzyme sulfide:quinone oxidoreductase (SQR) is essential for maintaining sulfur respiration, bioenergetics, and longevity across eukaryotes by oxidizing sulfide into supersulfides, as evidenced by impaired mitochondrial function and reduced lifespan in SQR-deficient yeast and mice models that could not be rescued by supersulfide supplementation.
This study demonstrates that fusing a bacterial microcompartment trimer with SpyTag enables its spontaneous self-assembly into robust, macroscopic layered protein materials that retain structural integrity and functional reactivity in both solution and dried states, offering a versatile platform for biointerfaces and sustainable protein engineering.
This study presents a rapid, gentle protocol for isolating highly pure and functionally intact mitochondria from rodent cardiomyocytes using cell strainers instead of traditional mechanical homogenization, thereby preserving structural integrity and enabling diverse downstream applications such as patch-clamp electrophysiology and mitochondrial transplantation.
This study discovers and characterizes a novel, metal-dependent class of bile salt hydrolases (metalloBSHs) in the human gut bacterium *Bilophila wadsworthia* that utilize a distinct catalytic mechanism from known enzymes, thereby reshaping the understanding of bile acid metabolism in the gut microbiome.
This study elucidates the structure, biosynthesis, and bioactivity of nostolysamides, a novel class of acylated lanthipeptides from *Nostoc punctiforme*, revealing their unique ring topology, the non-essential role of acylation for their membrane-disrupting antibacterial and antifungal activities, and the broad substrate specificity of the acyltransferase NpuN.