COVID-19 severity, rather than sex or age, predicts SARS-CoV-2 kinetics, and SARS-CoV-2 viral load from lower respiratory tract specimens may predict severe disease days before clinical deterioration for COVID-19 patients.
Genetic and biochemical analyses reveal that two stem-cell-specific microRNAs control stem cell fate decisions between pluripotency and differentiation through repressing Ago2, a key component of the microRNA machinery.
Justin D Lormand, Soo-Kyoung Kim ... Holger Sondermann
Dinucleases, specialized enzymes that catalyze the final step in RNA degradation, have evolved independently and repeatedly to fulfill essential roles in cell growth.
Spencer R Katz, Maksim A Yakovlev ... Keith C Cheng
Melanin staining for micro-CT imaging, using a novel application of ionic silver deposition, enables qualitative and quantitative 3D analysis of zebrafish pigmentation and reveals subtle phenotypes missed by light microscopy.
Mor Levi-Ferber, Rewayd Shalash ... Sivan Henis-Korenblit
Neuronal circuits can be disrupted by ire-1-dependent mRNA decay to affect germline tumor cell identity by regulating cross-tissue communication in Caenorhabditis elegans.
Alfonso Santos-Lopez, Christopher W Marshall ... Vaughn S Cooper
Selection imposed by antibiotics may dominate evolutionary forces acting on opportunistic pathogens like Acinetobacter baumannii, yet chance effects and a prior history in biofilm may constrain resistance and impose collateral sensitivities.
A structural and biochemical approach shows that CTP binding and hydrolysis regulate nucleation, spreading, and recycling of a chromosome segregation protein ParB.
Anil K Dasanna, Sebastian Hillringhaus ... Dmitry A Fedosov
A numerical model of malaria parasite adhesion to an erythrocyte shows that the original egg-like shape of merozoites is more robust than other shapes in negotiating various physiological conditions during the alignment process upon erythrocyte invasion.