Article
Biochemistry & Molecular Biology
Haofeng Liu, Yongxin Cao, Wenjing Zhang, Zhu Liu, Yan Li, Yu Chen, Hongchang Zhang, Fei Yu, Xiayan Liu
Summary: This study identifies 78 putative IQD family genes in the genome of hexaploid wheat and characterizes one TaIQD protein. The results reveal that TaIQD proteins regulate plant cell and organ morphogenesis and provide new insights into the functions of crop IQD proteins.
Article
Cell Biology
Gabriel M. Gihana, Arthur A. Cross-Najafi, Soni Lacefield
Summary: In budding yeast, the Cdc42 GTPase establishes a polar front during G1, with the activity of the Cdc14 phosphatase released through the mitotic exit network playing a crucial role in redistributing Cdc42 between mother and daughter cells. The interaction between Bem3, a Cdc42 GAP, and Cdc14 is important for the dephosphorylation and activation of Bem3, allowing for the inactivation and redistribution of Cdc42. These findings reveal a mechanism by which Cdc14 regulates the spatial and temporal activity of Cdc42 to maintain normal cell size at cytokinesis.
JOURNAL OF CELL BIOLOGY
(2021)
Article
Multidisciplinary Sciences
Dong Jin Mun, Bon Seong Goo, Bo Kyoung Suh, Ji-Ho Hong, Youngsik Woo, Soo Jeong Kim, Seunghyun Kim, Su Been Lee, Yubin Won, Jin Yeong Yoo, Eunbyul Cho, Eun Jin Jang, Truong Thi My Nhung, Hong Minh Triet, Hongyul An, Haeryun Lee, Minh Dang Nguyen, Seung-Yeol Park, Seung Tae Baek, Sang Ki Park
Summary: In this study, the Gcap14-Ndel1 complex is identified as a fundamental regulator of cytoskeletal remodeling during neurodevelopment, including neuronal process elongation and migration. Deficiency of Gcap14 leads to impaired cortical lamination and defective neuronal migration. The interaction between Gcap14 and Ndel1 effectively corrects the downregulation of microtubule dynamics and the defects in neuronal migration caused by Gcap14 deficiency.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Biochemistry & Molecular Biology
Hui Liu, Zhihui Xiu, Huanhuan Yang, Zhaoxing Ma, Dalin Yang, Hongqiu Wang, Bao-Cai Tan
Summary: This study identified a protein called SHREK1 that plays a crucial role in ribosome biogenesis and kernel development in maize. Depletion of SHREK1 disrupts pre-rRNA processing and impairs ribosome function, leading to embryo lethality in maize.
Article
Biotechnology & Applied Microbiology
Yong-Shui Tan, Li Wang, Ying-Ying Wang, Qi-En He, Zhi-Hua Liu, Zhen Zhu, Kai Song, Bing-Zhi Li, Ying-Jin Yuan
Summary: This study constructed a xylose-utilizing S. cerevisiae for adaptation study, finding that the xylose consumption rate increased significantly in the second incubation compared with the first incubation. It was observed at the single-cell level that the stagnation time for xylose utilization decreased after adaptation with xylose medium. The study also identified H4K5 acetylation and genes GCN5 and HPA2 as important factors related to xylose consumption memory in engineered S. cerevisiae during adaptation.
BIOTECHNOLOGY FOR BIOFUELS
(2021)
Article
Biochemical Research Methods
Yufei Wu, Adrian M. Pegoraro, David Weitz, Paul M. Janmey, Sean Sun
Summary: The study developed a computational model of cell growth and proteome increase to analyze the correlation between cell volume and nuclear volume in eukaryotes. It was found that the transport rates between cytoplasm and nucleoplasm and ribosome assembly play crucial roles in determining cell growth rate and the cell/nucleus volume ratio. The research suggests that optimizing kinetic and transport parameters together is necessary to regulate cell growth and volume ratios.
PLOS COMPUTATIONAL BIOLOGY
(2022)
Article
Cell Biology
Stefan Bresson, Vadim Shchepachev, David Tollervey
Summary: The fungal cell wall is a crucial target for antifungal compounds, and the cell wall integrity (CWI) pathway regulates transcriptional responses to cell wall damage. In addition, RNA-binding proteins Mrn1 and Nab6 play a complementary role by stabilizing cell wall-related mRNAs. Lack of Nab6 leads to downregulation of these mRNAs, while CWI signaling and Nab6 work together to maintain appropriate cell wall gene expression during stress. Deletion of MRN1 partially alleviates the growth defects associated with Delta nab6, indicating an opposing function in mRNA destabilization. Our findings highlight the importance of a posttranscriptional pathway in cellular resistance to antifungal compounds.
Article
Biochemistry & Molecular Biology
Rohan Dandage, Caroline M. Berger, Isabelle Gagnon-Arsenault, Kyung-Mee Moon, Richard Greg Stacey, Leonard J. Foster, Christian R. Landry
Summary: The study investigated protein-protein interactions in hybrids between yeast species, finding that most interactions are similar to those of the parents but with some altered instances. It suggests that the occurrence of chimeric protein complexes is frequent, potentially due to incompatibilities or imbalances between parental proteomes.
MOLECULAR BIOLOGY AND EVOLUTION
(2021)
Article
Multidisciplinary Sciences
David M. Hollenstein, Mariya Licheva, Nicole Konradi, David Schweida, Hector Mancilla, Muriel Mari, Fulvio Reggiori, Claudine Kraft
Summary: Vac8 plays a crucial role in coordinating the initiation of autophagosome formation by promoting the assembly of autophagy factors through avidity-driven interactions. In selective autophagy, Vac8 acts as a central hub to nucleate the phagophore assembly site at the vacuolar membrane, leading to clustering and sequestering of early autophagy factors and promoting phagophore assembly.
NATURE COMMUNICATIONS
(2021)
Article
Oncology
Aileen Roth, Adrian Gihring, Joachim Bischof, Leiling Pan, Franz Oswald, Uwe Knippschild
Summary: Protein kinases of the Casein Kinase 1 family are essential for the regulation of various cellular processes, including microtubule dynamics. They directly modulate microtubule dynamics by phosphorylating tubulin isoforms and microtubule-associated proteins, which can affect microtubule stability and genomic stability. Therefore, targeting Casein Kinase 1 functions may be a potential therapeutic strategy for cancer treatment.
Article
Multidisciplinary Sciences
Yoon-Mo Yang, Katrin Karbstein
Summary: This study reveals that under high Na+, sorbitol, or pH stress, a physiologically relevant ribosome population arises through the dissociation of Rps26 from fully assembled ribosomes, enabling a translational response to these stresses. The chaperone Tsr2 is involved in the release and reincorporation of Rps26, repairing the subunit after the stress subsides.
Article
Cell Biology
Xuewei Song, Lihong Cui, Menghua Wu, Shan Wang, Yinlong Song, Zhen Liu, Zhaoyu Xue, Wei Chen, Yingjie Zhang, Hui Li, Landi Sun, Xin Liang
Summary: In this study, we investigate the formation of mechanosensory organelles (MOs) in fly ciliated mechanoreceptors. We find that the MOs are composed of a compound cytoskeleton made up of microtubules and electron-dense materials (EDMs), and the protein DCX-EMAP is essential for their formation. DCX-EMAP promotes the assembly/stabilization of the microtubules and the accumulation of the EDMs in the MOs, serving as a core organizer of the MOs.
JOURNAL OF CELL BIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Calla B. Shubin, Rini Mayangsari, Ariel D. Swett, Carol W. Greider
Summary: In budding yeast, Rif1 negatively regulates telomere length through a region with HEAT repeats that mediate telomere length regulation, separate from its proposed DNA binding function. Conserved amino acids from position 436 to 577 play a crucial role in telomere length regulation.
NUCLEIC ACIDS RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Celia Jeronimo, Andrew Angel, Vu Q. Nguyen, Jee Min Kim, Christian Poitras, Elie Lambert, Pierre Collin, Jane Mellor, Carl Wu, Francois Robert
Summary: Research has shown that the histone chaperone FACT binds to transcribed chromatin, predominantly recognizing the +1 nucleosome, as it is partially unwrapped by RNAPII, and spreads to downstream nucleosomes with the assistance of the chromatin remodeler Chd1.
Article
Cell Biology
Jose Rivera Alvarez, Laure Asselin, Peggy Tilly, Roxane Benoit, Claire Batisse, Ludovic Richert, Julien Batisse, Bastien Morlet, Florian Levet, Noemie Schwaller, Yves Mely, Marc Ruff, Anne-Cecile Reymann, Juliette D. Godin
Summary: Completion of neuronal migration is crucial for brain development. Kif21b, a plus-end-directed kinesin motor protein, has been found to play a physiological role in the radial migration of projection neurons in the developing cortex. It regulates the locomotion of newborn neurons guided by radial glia independently of microtubules, and directly binds and regulates the actin cytoskeleton during migration. The Kif21b-mediated regulation of actin cytoskeleton dynamics influences branching and nucleokinesis during neuronal locomotion.