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.

📄 molecular biology

Conservation of Nuclear Receptor DAF-12 with Evidence for Ligand Diversification in Plant-Parasitic Nematodes

This study reveals that while the DAF-12 nuclear receptor pathway is conserved in plant-parasitic nematodes, these species often utilize structurally distinct endogenous ligands rather than the canonical dafachronic acids found in *C. elegans*, suggesting a diversification of hormonal signaling that could be targeted for new crop protection strategies.

Liu, Y., Fan, C.-W., Wang, Z., Wendt, G., Zacharias, L. G., McDonald, J. G., Li, Y., Shen, S.-Y., Xu, H. E., Collins, J. (…)2026-09-07
📄 molecular biology

Validation of a quantitative PCR assay for the detection and quantification of the nematode Litylenchus crenatae in American beech leaf tissue

This study validates a highly sensitive and reproducible probe-based qPCR assay for the detection and quantification of *Litylenchus crenatae* in various matrices, demonstrating its reliability across independent laboratories and its suitability for monitoring and managing Beech leaf disease.

Torres-Bedoya, E., Miles, A., Ker, J., Rotondo, F., Snover-Clift, K., Bonello, P.2026-09-07
📄 molecular biology

A positively selected microRNA controls a reversible aging program in striated muscle

This study demonstrates that inhibiting the positively selected microRNA miR-128-3p reverses age-related and disease-associated muscle decline in mice and pigs by activating mitochondrial programs and suppressing inflammation, thereby restoring tissue function across multiple striated muscle pathologies.

Boldridge, M. A., Xu, L., Wang, X., Stirm, M., Bonilla, G., Zhu, C., Lee, J. Y., Stark, R. L., Damal Villivalam, S., Ben (…)2026-09-07
📄 molecular biology

Covalent anti-HIV compound that induces HIV-1 capsid multimerization and degradation, decomposes the viral core

The study reports that ACAi-001, a novel covalent HIV-1 capsid inhibitor identified through in silico screening, uniquely induces aberrant capsid multimerization and degradation by binding to specific residues, thereby disrupting viral core integrity and inhibiting HIV-1 replication.

Nakamura, T., Takamune, N., Okumura, M., Yasunaga, J.-i., Sugiura, M., Amano, M.2026-09-02
📄 molecular biology

Structural basis for co-translational assembly of homo-oligomeric proteins in cis and in trans

Using ribosome profiling and cryo-EM on the *E. coli* homodimer PheA, this study reveals that co-translational assembly of homo-oligomeric proteins primarily occurs in *trans* between neighboring mRNAs to form large polysomal networks, challenging the assumption that such interactions mainly happen in *cis* on the same transcript.

Koubek, J., Filbeck, S., Fixen, G., Kopetschke, S., Schmitt, J., Pfeffer, S., Kramer, G., Bukau, B.2026-09-02
📄 molecular biology

Inheritance of a Single Edited CD46 Allele Is Associated with Reduced Ex Vivo Susceptibility to Bovine Viral Diarrhea Virus

This study demonstrates that a single inherited CD46 allele containing a specific six-amino-acid substitution confers reduced susceptibility to Bovine Viral Diarrhea Virus in heterozygous cattle, indicating that this resistance trait can be effectively disseminated through conventional breeding without requiring homozygosity.

Workman, A. M., Krueger, A. C., Heaton, M. P., Snider, A. P., Kuhn, K. L., Sonstegard, T. S., Vander Ley, B. L.2026-09-01
📄 molecular biology

Hepatic stellate cell FXR signaling regulates context-dependent functions in liver homeostasis and fibrosis.

This study demonstrates that farnesoid X receptor (FXR) signaling in hepatic stellate cells (HSCs) is a critical, distinct regulator of liver homeostasis and fibrosis, driving specific transcriptional programs and mediating the anti-fibrotic effects of FXR agonists like tropifexor.

Vinod, M., Zummo, F.-P., Gheeraert, C., Gouda, Z., Courquet, S., Dorchies, E., Thuret, L., Lapage, M., Guille, L., Bobow (…)2026-08-31
📄 molecular biology

Single-Cell Inference of Structural States Of Ribosomes

The paper introduces SCISSOR, a high-throughput single-cell method that infers global ribosomal structural states and translation activity by analyzing differential rRNA protection, thereby revealing systematic translational regulation across the cell cycle and during stem cell differentiation that is invisible to existing transcriptomic or ribosome-profiling techniques.

Joly-Smith, E., VanInsberghe, M., Sarieva, K., Marinelli, E., van Es, R. M., Sobrevals Alcaraz, P., Vos, H. R., Andersso (…)2026-08-31