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Squamate reptiles may have compensated for the lack of γδTCR with a duplication of the TRB locus.
Front Immunol
January 2025
Center for Evolutionary and Theoretical Immunology, Department of Biology, University of New Mexico, Albuquerque, NM, United States.
Squamate reptiles are amongst the most successful terrestrial vertebrate lineages, with over 10,000 species across a broad range of ecosystems. Despite their success, squamates are also amongst the least studied lineages immunologically. Recently, a universal lack of γδ T cells in squamates due to deletions of the genes encoding the T cell receptor (TCR) γ and δ chains was discovered.
View Article and Find Full Text PDFMolecular mechanism of ligand recognition and activation of lysophosphatidic acid receptor LPAR6.
Proc Natl Acad Sci U S A
January 2025
Faculty of Life Sciences and Medicine, Harbin Institute of Technology Center for Life Sciences, School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China.
Lysophosphatidic acid (LPA) exerts its physiological roles through the endothelialdifferentiation gene (EDG) family LPA receptors (LPAR1-3) or the non-EDG family LPA receptors (LPAR4-6). LPAR6 plays crucial roles in hair loss and cancer progression, yet its structural information is very limited. Here, we report the cryoelectron microscopy structure of LPA-bound human LPAR6 in complex with a mini G or G protein.
View Article and Find Full Text PDFA single residue switch mediates the broad neutralization of Rotaviruses.
Nat Commun
January 2025
State Key Laboratory of Vaccines for Infectious Diseases, Xiang An Biomedicine Laboratory, School of Life Sciences, School of Public Health, Xiamen University, Xiamen, PR China.
Broadly neutralizing antibodies (bNAbs) could offer escape-tolerant and lasting protection against viral infections and therefore guide development of broad-spectrum vaccines. The increasing challenge posed by viral evolution and immune evasion intensifies the importance of the discovery of bNAbs and their underlying neutralization mechanism. Here, focusing on the pivotal viral protein VP4 of rotavirus (RV), we identify a potent bNAb, 7H13, exhibiting broad-spectrum neutralization across diverse RV genotypes and demonstrating strong prevention of virus infection in female mice.
View Article and Find Full Text PDFGenome-Wide A → G and C → T Mutations Induced by Functional TadA Variants in .
ACS Synth Biol
January 2025
Laboratory of Synthetic Microbiology, School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, P. R. China.
The fusion expression of deoxyribonucleic acid (DNA) replication-related proteins with nucleotide deaminase enzymes promotes random mutations in bacterial genomes, thereby increasing genetic diversity among the population. Most previous studies have focused on cytosine deaminase, which produces only C → T mutations, significantly limiting the variety of mutation types. In this study, we developed a fusion expression system by combining DnaG (RNA primase) with adenine deaminase TadA-8e (DnaG-TadA) in , which is capable of rapidly introducing A → G mutations into the genome, resulting in a 664-fold increase in terms of mutation rate.
View Article and Find Full Text PDFComparison of genotyping assays for detection of targeted CRISPR/Cas mutagenesis in highly polyploid sugarcane.
Front Genome Ed
December 2024
Agronomy Department, Plant Molecular and Cellular Biology Program, Genetics Institute, University of Florida, IFAS-Institute of Food and Agricultural Science, Gainesville, FL, United States.
Sugarcane ( spp.) is an important biofuel feedstock and a leading source of global table sugar. hybrid cultivars are highly polyploid (2n = 100-130), containing large numbers of functionally redundant hom(e)ologs in their genomes.
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