252 papers
Molecular biology explores the tiny machinery inside living cells, revealing how genetic instructions are read, copied, and turned into the proteins that keep us alive. This field acts as a bridge between the static code of DNA and the dynamic processes that drive growth, disease, and life itself, offering insights into everything from cellular repair to the development of new medicines.
On Gist.Science, we track every new preprint uploaded to bioRxiv in this category to make these complex discoveries accessible to everyone. Our team processes each submission to provide both clear, plain-language explanations and detailed technical summaries, ensuring you can grasp the core findings without getting lost in dense academic jargon.
Below are the latest molecular biology papers freshly processed from bioRxiv, ready for you to explore and understand.
This study establishes a comprehensive genetic toolkit for the anaerobic gut parasite *Blastocystis* ST7-B, featuring optimized electroporation, validated antibiotic selection systems, and a three-stage workflow for generating stable transgenic lines with diverse reporter capabilities, thereby overcoming previous barriers to functional genetics in this prevalent human microbe.
This study establishes an efficient CRISPR/Cas9-mediated transformation system for the banana pathogen *Pseudocercospora fijiensis*, which was successfully used to generate knockout mutants demonstrating that the effector Avr4 is not responsible for the resistance observed in the banana accession Calcutta 4.
This study utilizes integrated Nanopore direct RNA sequencing and snoRNA profiling to demonstrate that rRNA modification stoichiometry undergoes dynamic, site-specific changes during human embryonic stem cell differentiation, revealing a novel layer of ribosome heterogeneity regulated by differential snoRNA expression.
This study demonstrates that TSC2 haploinsufficiency impairs autophagy prior to complete loss of heterozygosity and shows that metformin effectively restores autophagy in both heterozygous and CRISPR-edited TSC2 primary fibroblasts by blocking mTORC1 signaling.
This study demonstrates that the regulatory architecture of TetR-based circuits, specifically through strategies like autogenous regulation and aptazyme integration, is a primary determinant of gene expression performance in mammalian cells, offering design principles to optimize the trade-off between output strength and dynamic range.
This study employs nine distance metrics to analyze evolutionary rate inflection points in SNV similarity curves across 413 samples, revealing that while cognitive genes generally show higher evolutionary change frequencies, specific mutations in language-related genes (NFXL1, SRGAP2, SRGAP2C) uniquely intersect at critical evolutionary junctures, suggesting their distinctive role in the evolution of cognitive abilities.
Deletion of the ribosomal protein gene *rpmJ* in *Escherichia coli* enhances *zntA* transcription and confers zinc resistance through a translation-dependent mechanism involving the native *zntA* promoter and N-terminal coding region, a process that is reversed by the ectopic expression of the RpmJ paralog YkgO.
This study utilizes cryo-EM structures and functional analyses to reveal how distinct conformational rearrangements of BepA's 6- and 9-loops regulate its dual roles in substrate interaction and proteolytic activation during the triage of LptD at the BAM complex.
This study identifies FAM136A as a conserved, essential chaperone residing in the mitochondrial intermembrane space that solubilizes and facilitates the insertion of voltage-dependent anion channels (VDACs) and specific electron transport chain subunits into the outer mitochondrial membrane.
This study utilizes ChIP-seq and DNase I footprinting to define the genome-wide CosR regulon in *Campylobacter jejuni*, revealing its bipartite DNA-binding motif, autoregulation, and redox-responsive remodeling of core cellular processes under oxidative stress.