316 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 demonstrates that the tRNA writer enzyme MnmA coordinates bacterial stress responses and fitness by modifying wobble uridine to ensure the efficient translation of specific codon-defined regulon controllers, such as RpoS and OxyR, thereby linking codon architecture to global gene expression and stress adaptation.
This study introduces a genome-wide sequencing strategy using AID-mediated mutational footprints to map helicase activity, revealing that the RecQ4-family helicase Hrq1 is widely associated with RNA polymerase III-transcribed genes, particularly tRNA genes, where it unwinds DNA on the transcriptional template strand.
This study presents the first comprehensive multi-omics framework for the wild cochineal bug *Dactylopius opuntiae*, including a 359-Mb de novo genome assembly that identifies 26 fatty acyl reductase (FAR) genes and reveals lineage-specific tandem expansions responsible for the insect's dense waxy coating.
This study presents a comprehensive, expert-validated DNA barcode reference library for 1216 named Diptera species from Churchill, Canada, which not only facilitates future species identification and biogeographic analysis but also reveals complex molecular evolutionary patterns and postglacial colonization histories in the region.
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.