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We present the X-ray crystal structure of a complex between a G-clamp and an internal loop motif of pre-mir-125a, selected from high affinity RNAs identified in a large-scale RNA-binding profile. This X-ray crystal structure reveals that the G-clamp interacts with three distinct guanine bases, forming robust bonds through hydrogen bonding and stacking interactions.
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http://dx.doi.org/10.1039/d4cc04677c | DOI Listing |
Nat Commun
September 2025
Department of Biochemistry, University of Illinois, Urbana-Champaign, IL, USA.
Individuals with progressive liver failure risk dying without liver transplantation. However, our understanding of why regenerative responses are disrupted in failing livers is limited. Here, we perform multiomic profiling of healthy and diseased human livers using bulk and single-nucleus RNA- and ATAC-seq.
View Article and Find Full Text PDFPestic Biochem Physiol
November 2025
State Key Laboratory of Agricultural and Forestry Biosecurity, College of Plant Protection, Nanjing Agricultural University, Nanjing 211800, PR China. Electronic address:
The insect ionotropic γ-aminobutyric acid (GABA) receptor is an important insecticide target, and alternative splicing (AS) among exons 3a, 3b, 6a, and 6b of its RDL subunit is ubiquitous in insects; however, the AS factors and mechanisms remain unclear. While the neuro-oncological ventral antigen (Nova) is known to regulate AS of the γ2 subunit of mammalian GABA receptors, its role in insects remains unexplored. Two CsNova isoforms, CsNova-X1 and CsNova-X3, were identified by BLAST in the third-generation transcriptome of Chilo suppressalis.
View Article and Find Full Text PDFJ Extracell Vesicles
September 2025
State Key Laboratory of Metabolism and Regulation in Complex Organisms, Hubei Provincial Research Center for Basic Biological Sciences, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, TaiKang Center for Life and Medical Sciences, RNA Institute, Wuhan University, Wuhan, China.
Tumour progression depends on the bidirectional interactions between cancer and stroma in the heterogeneous tumour microenvironment (TME) partially through extracellular vesicles (EVs). However, the secretary mechanism and biological effect of cancer cell derived EVs on tumour survival under starvation is poorly defined. Here, we identify cancer cells selectively secrete miR-33a with the assistance of aconitase 1 (ACO1), an iron-responsive RNA binding protein, under glucose starvation and lower iron level, which affiliates the binding capability of miR-33a and ACO1.
View Article and Find Full Text PDFiScience
September 2025
School of Biological Sciences, Seoul National University, Seoul 08826, Korea.
Post-transcriptional gene regulatory mechanisms are fundamental to the determination of gene expression dynamics and especially crucial for the earliest stages of animal development in which transcription is nearly silent. Here, we performed high-resolution total RNA sequencing and quantitative mass spectrometry analysis simultaneously on Drosophila maternal-to-zygotic transition (MZT). Further, this study is the first to report the proteome-wide quantitative changes in protein ubiquitination in MZT.
View Article and Find Full Text PDFACS Omega
August 2025
Department of Spine Orthopedics, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750001, China.
Spinal cord injury (SCI) represents one of the recognized difficulties, and its pathological mechanisms remain unclear. Aberrant regulation of the RNA-binding protein (RBP) and selective splicing are associated with SCI. Nonetheless, the mechanisms of RBP regulation and abnormal selective splicing events associated with SCI are unexplored.
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