Gamma-tubulin is as ubiquitous in eukaryotes as alpha- and beta-tubulin. Rather than forming part of the microtubule wall, however, gamma-tubulin is involved in microtubule nucleation. Although gamma-tubulin concentrates at microtubule-organizing centers, it also exists in a cytoplasmic complex whose size and complexity depends on the organism and cell type. In the past year, progress in understanding the functions of gamma-tubulin was made on two fronts: identifying the proteins that interact with gamma-tubulin and identifying the proteins that interact with the gamma-tubulin complex to tether it to the microtubule-organizing center.
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http://dx.doi.org/10.1016/S0959-440X(99)80035-9 | DOI Listing |
Zool Res
January 2025
State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, China.
NLRP3 inflammasome activation is pivotal for cytokine secretion and pyroptosis in response to diverse stimuli, playing a crucial role in innate immunity. While extensively studied in mammals, the regulatory mechanisms governing NLRP3 activation in non-mammalian vertebrates remain largely unexplored. Teleosts, as basal vertebrates, represent an ideal model for exploring the evolutionary trajectory of inflammasome regulation.
View Article and Find Full Text PDFSci Adv
January 2025
MOE Key Laboratory for Cellular Dynamics and Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, China.
Microtubule assembly takes place at the centrosome and noncentrosomal microtubule-organizing centers (MTOCs). However, the mechanisms controlling the activity of noncentrosomal MTOCs are poorly understood. Here, using the fission yeast as a model organism, we demonstrate that the kinesin-14 motor Klp2 interacts with the J-domain Hsp70/Ssa1 cochaperone Rsp1, an inhibitory factor of microtubule assembly, and that Klp2 is required for the proper localization of Rsp1 to microtubules.
View Article and Find Full Text PDFChromosome Res
January 2025
Department of Biology, Sonoma State University, Rohnert Park, CA, USA.
Little is known about how distance between homologous chromosomes are controlled during the cell cycle. Here, we show that the distribution of centromere components display two discrete clusters placed to either side of the centrosome and apical/basal axis from prophase to G interphase. 4-Dimensional live cell imaging analysis of centromere and centrosome tracking reveals that centromeres oscillate largely within one cluster, but do not cross over to the other cluster.
View Article and Find Full Text PDFCurr Oncol
December 2024
Department of Tumor Pathology, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan.
STIL is a regulatory protein essential for centriole biogenesis, and its dysregulation has been implicated in various diseases, including malignancies. However, its role in non-small-cell lung carcinoma (NSCLC) remains unclear. In this study, we examined STIL expression and its potential association with chromosomal numerical abnormalities (CNAs) in NSCLC using The Cancer Genome Atlas (TCGA) dataset, immunohistochemical analysis, and in vitro experiments with NSCLC cell lines designed to overexpress STIL.
View Article and Find Full Text PDFFly (Austin)
December 2025
Department of Biology, Indian Institute of Science Education & Research, Pune, India.
Proper formation and specification of Primordial Germ Cells (PGCs) is of special significance as they gradually transform into Germline Stem Cells (GSCs) that are ultimately responsible for generating the gametes. Intriguingly, not only the PGCs constitute the only immortal cell type but several specific determinants also underlying PGC specification such as Vasa, Nanos and Germ-cell-less are conserved through evolution. In , PGC formation and specification depends on two independent factors, the maternally deposited specialized cytoplasm (or germ plasm) enriched in germline determinants, and the mechanisms that execute the even partitioning of these determinants between the daughter cells.
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