Results 101 to 110 of about 672,429 (301)

Cluster formation and phase separation driven by mobile myosin motors in the motility assay

Physical Review Research
Interactions between actin filaments (F-actin) and myosin are critically important for a wide range of biological processes, including cell migration, cytokinesis, and morphogenesis.
Brandon Slater, Alfredo Sciortino, Andreas R. Bausch, Taeyoon Kim   +3 more
doaj   +1 more source

Multi‐omics and low‐input proteomics profiling reveals dynamic regulation driving pluripotency initiation in early mouse embryos

FEBS Open Bio, EarlyView.
Mouse pre‐implantation development involves a transition from totipotency to pluripotency. Integrating transcriptomics, epigenetic profiling, low‐input proteomics and functional assays, we show that eight‐cell embryos retain residual totipotency features, whereas cytoskeletal remodeling regulated by the ubiquitin‐proteasome system drives progression ...
Wanqiong Li, Xi Xiao, Lingbin Qi, Chanyi Li, Sirui Song, Jiaying Qin, Zhigang Xue, Jinfeng Xue, Huaifang Li   +8 more
wiley   +1 more source

Turn-on protein switches for controlling actin binding in cells

Nature Communications
Within a shared cytoplasm, filamentous actin (F-actin) plays numerous and critical roles across the cell body. Cells rely on actin-binding proteins (ABPs) to organize F-actin and to integrate its polymeric characteristics into diverse cellular processes.
Unyime M. Effiong, Hannah Khairandish, Isabela Ramirez-Velez, Yanran Wang, Brian Belardi   +4 more
doaj   +1 more source

BMI‐1 modulation and trafficking during M phase in diffuse intrinsic pontine glioma

FEBS Open Bio, EarlyView.
The schematic illustrates BMI‐1 phosphorylation during M phase, which triggers its translocation from the nucleus to the cytoplasm. In cycling cells, BMI‐1 functions within the PRC1 complex to mediate H2A K119 monoubiquitination. Following PTC596‐induced M phase arrest, phosphorylated BMI‐1 dissociates from PRC1 and is exported to the cytoplasm via its
Banlanjo Umaru, Deepak Kumar Mishra, Shiva Senthil Kumar, Hao‐Han Pang, Brendan Devine, Komal Khan, Rachid Drissi   +6 more
wiley   +1 more source

Nuclear N-WASP Induces Actin Polymerization in the Nucleus with Cortactin as an Essential Factor

Cells
Nuclear actin polymerization was reported to control different nuclear processes, but its regulation is poorly understood. Here, we show that N-WASP can trigger the formation of nuclear N-WASP/F-actin nodules.
Xin Jiang, Purusottam Mohapatra, Maria Rossing, Wenqian Zheng, Olga Zbodakova, Jayashree Vijay Thatte, Claus Storgaard Sørensen, Thu Han Le Phan, Cord Brakebusch   +8 more
doaj   +1 more source

The cooperative regulation of miR‐221 by APE1 and AUF1 impacts p27Kip1 defining a miR signature relevant for cervical cancer

FEBS Open Bio, EarlyView.
A regulatory axis involving APE1, AUF1, and miR‐221 is proposed. Pri‐miR‐221 is processed by DROSHA and DICER to generate mature miR‐221, which targets p27Kip1 mRNA. APE1 and AUF1 compete for pre‐miR‐221 binding. Reduced APE1/AUF1 levels impair miR‐221 biogenesis, decrease p27Kip1 mRNA degradation, and promote cell cycle progression, chemoresistance ...
Matilde Clarissa Malfatti, Nicolò Gualandi, Gianluca Tell, Giulia Antoniali   +3 more
wiley   +1 more source

Physical mechanism of the compressive response of F-actin networks: significance of crosslinker unbinding events

Theoretical and Applied Mechanics Letters, 2014
A model of crosslinker unbinding is implemented in a highly coarse-grained granular model of F-actin cytoskeleton. We employ this specific granular model to study the mechanisms of the compressive responses of F-actin networks.
Tong Li, Dean Hu, Prasad K.D.V. Yarlagadda, Yuantong Gu   +3 more
doaj   +1 more source

Steric regulation of tandem calponin homology domain actin-binding affinity. [PDF]

, 2019
Tandem calponin homology (CH1-CH2) domains are common actin-binding domains in proteins that interact with and organize the actin cytoskeleton. Despite regions of high sequence similarity, CH1-CH2 domains can have remarkably different actin-binding ...
Bausch, Andreas, Belardi, Brian, Fletcher, Daniel A, Harris, Andrew R, Jreij, Pamela, Shams, Hengameh, Wei, Kathy   +6 more
core   +1 more source

Anchorage‐independent and faster growth in clonal population from UV‐irradiated NER‐deficient cells

FEBS Open Bio, EarlyView.
UV‐irradiated cells expressing a DDB2 mutant protein unable to interact with PCNA (DDB2PCNA‐) form clones able to grow without anchorage. Different experimental approaches reveal heterogeneity in cell cycle regulation and drug response within these clones, emphasizing the crucial role of the DDB2‐PCNA interaction in preventing cellular transformation ...
Paola Perucca, Anna Tricarico, Martina Furfaro, Priyam Ghosh, Ennio Prosperi, Lucia Anna Stivala, Ornella Cazzalini   +6 more
wiley   +1 more source

Elasticity of Semiflexible Biopolymer Networks

, 1995
We develop a model for gels and entangled solutions of semiflexible biopolymers such as F-actin. Such networks play a crucial structural role in the cytoskeleton of cells.
A.N. Semenov, C. Bustamante, C.F. Schmidt, D. Wachsstock, E.L. Elson, J. Haskell, J. Käs, J. Käs, J. Newman, M. Adam, M. Doi, M. Fixman, P.A. Janmey, P.A. Janmey, P.A. Janmey, P.A. Janmey, P.A. Janmey, P.A. Janmey, P.G. de Gennes, R. Furukawa, R.H. Colby, S. Kaufmann, T. Stossel   +22 more
core   +2 more sources