Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
The de novo synthesis of cytidine 5'-triphosphate (CTP) is catalyzed by the enzyme CTP synthase (CTPS), which is known to form cytoophidia across all three domains of life. In this study, we use the budding yeast and the fission yeast as model organisms to compare cytoophidium assembly under external environmental and intracellular CTPS alterations. We observe that under low and high temperature conditions, cytoophidia in fission yeast gradually disassemble, while cytoophidia in budding yeast remain unaffected. The effect of pH changes on cytoophidia maintenance in the two yeast species is different. When cultured in the yeast-saturated cultured medium, cytoophidia in fission yeast disassemble, while cytoophidia in budding yeast gradually form. Overexpression of CTPS results in the presence and maintenance of cytoophidia in both yeast species from the log phase to the stationary phase. In summary, our results demonstrate differential cytoophidium assembly between and , the two most studied yeast species.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11432714 | PMC |
| http://dx.doi.org/10.3390/ijms251810092 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Filamentation of hCTPS1 with CTP.
Cell Biosci
July 2025
School of Life Science and Technology, ShanghaiTech University, Shanghai, China.
CTP synthase (CTPS) is a key enzyme in de novo CTP synthesis, playing a critical role in nucleotide metabolism and cellular proliferation. Human CTPS1 (hCTPS1), one of the two CTPS isoforms, is essential for immune responses and is highly expressed in proliferating cells, making it a promising therapeutic target for immune-related diseases and cancer. Despite its importance, the regulatory mechanisms governing hCTPS1 activity remain poorly understood.
View Article and Find Full Text PDFY12C mutation disrupts IMPDH cytoophidia and alters cancer metabolism.
FEBS J
July 2025
School of Life Science and Technology, ShanghaiTech University, China.
Guanosine triphosphate (GTP) is a building block for DNA and RNA, and plays a pivotal role in various cellular functions, serving as an energy source, enzyme cofactor and a key component of signal transduction. The activity of the rate-limiting enzyme in de novo GTP synthesis, inosine monophosphate dehydrogenase (IMPDH), is regulated by nucleotide binding. Recent studies have illuminated that IMPDH octamers can assemble into linear polymers, adding another dimension to its enzymatic regulation.
View Article and Find Full Text PDFCytoophidium complexes resonate with cell fates.
Cell Mol Life Sci
January 2025
School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China.
Metabolism is a fundamental characteristic of life. In 2010, we discovered that the metabolic enzyme CTP synthase (CTPS) can assemble a snake like structure inside cells, which we call the cytoophidium. Including CTPS, an increasing number of metabolic enzymes have been found to form cytoophidia in cells.
View Article and Find Full Text PDFDifferential Cytoophidium Assembly between and .
Int J Mol Sci
September 2024
School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China.
The de novo synthesis of cytidine 5'-triphosphate (CTP) is catalyzed by the enzyme CTP synthase (CTPS), which is known to form cytoophidia across all three domains of life. In this study, we use the budding yeast and the fission yeast as model organisms to compare cytoophidium assembly under external environmental and intracellular CTPS alterations. We observe that under low and high temperature conditions, cytoophidia in fission yeast gradually disassemble, while cytoophidia in budding yeast remain unaffected.
View Article and Find Full Text PDFArchitecture of CTPS filament networks revealed by cryo-electron tomography.
Exp Cell Res
October 2024
School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China; Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, OX1 3PT, UK. Electronic address:
The cytoophidium is a novel type of membraneless organelle, first observed in the ovaries of Drosophila using fluorescence microscopy. In vitro, purified Drosophila melanogaster CTPS (dmCTPS) can form metabolic filaments under the presence of either substrates or products, and their structures that have been analyzed using cryo-electron microscopy (cryo-EM). These dmCTPS filaments are considered the fundamental units of cytoophidia.
View Article and Find Full Text PDF