Results 111 to 120 of about 290,663 (301)

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

TBLR1 regulates the expression of nuclear hormone receptor co-repressors

BMC Cell Biology, 2006
Background Transcription is regulated by a complex interaction of activators and repressors. The effectors of repression are large multimeric complexes which contain both the repressor proteins that bind to transcription factors and a number of co ...
Brown Stuart, Gu Judy, Zeng Lin, Chang Qing, Zhang Xin-Min, Basch Ross S   +5 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

Nuclear pore links Fob1‐dependent rDNA damage relocation to lifespan control

FEBS Open Bio, EarlyView.
Damaged rDNA accumulates at a specific perinuclear interface that couples nucleolar escape with nuclear envelope association. Nuclear pores at this site help inhibit Fob1‐induced rDNA instability. This spatial organization of damage handling supports a functional link between nuclear architecture, rDNA stability, and replicative lifespan in yeast.
Yamato Okada, Mina Iwaki, Kyosuke Hagiri, Rei Izumi, Masahiko Harata, Chihiro Horigome   +5 more
wiley   +1 more source

σE of Streptomyces coelicolor can function both as a direct activator or repressor of transcription

Communications Biology
σ factors are considered as positive regulators of gene expression. Here we reveal the opposite, inhibitory role of these proteins. We used a combination of molecular biology methods and computational modeling to analyze the regulatory activity of the ...
Jiří Pospíšil, Marek Schwarz, Alice Ziková, Dragana Vítovská, Miluše Hradilová, Michal Kolář, Alena Křenková, Martin Hubálek, Libor Krásný, Jiří Vohradský   +9 more
doaj   +1 more source

The K219T-Lamin mutation induces conduction defects through epigenetic inhibition of SCN5A in human cardiac laminopathy

Nature Communications, 2019
Mutation of LMNA, encoding Lamin A/C nuclear proteins, cause dilated cardiomyopathy and conduction disorders. Here, the authors show that patient-specific iPSC-derived CMs carrying the K219T LMNA mutation have downregulated Nav1.5 channels due to dynamic
Nicolò Salvarani, Silvia Crasto, Michele Miragoli, Alessandro Bertero, Marianna Paulis, Paolo Kunderfranco, Simone Serio, Alberto Forni, Carla Lucarelli, Matteo Dal Ferro, Veronica Larcher, Gianfranco Sinagra, Paolo Vezzoni, Charles E. Murry, Giuseppe Faggian, Gianluigi Condorelli, Elisa Di Pasquale   +16 more
doaj   +1 more source

Recognition of secretory proteins in Escherichia coli requires signals in addition to the signal sequence and slow folding

BMC Microbiology, 2002
Background The Sec-dependent protein export apparatus of Escherichia coli is very efficient at correctly identifying proteins to be exported from the cytoplasm.
Flower Ann M, Smith Margaret A, Mallik Ipsita   +2 more
doaj   +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

Evidence for leucine zipper motif in lactose repressor protein

Journal of Biological Chemistry, 1991
Amino acid sequence homology between the carboxyl-terminal segment of the lac repressor and eukaryotic proteins containing the leucine zipper motif with associated basic DNA binding region (bZIP) has been identified. Based on the sequence comparisons, site-specific mutations have been generated at two sites predicted to participate in oligomer ...
A E, Chakerian, V M, Tesmer, S P, Manly, J K, Brackett, M J, Lynch, J T, Hoh, K S, Matthews   +6 more
openaire   +2 more sources

MiR‐513a promotes human erythroid differentiation by modulating c‐Jun

FEBS Open Bio, EarlyView.
During early human erythropoiesis, miR‐513a promoted erythroid differentiation in primary human CD34+ hematopoietic stem‐progenitor cells and human TF‐1 erythroleukemic cells by indirectly decreasing c‐Jun and phospho‐c‐Jun expression, which are associated with increased GATA1 expression.
MinJung Kim, Brittany Taylor, Shannon Bolten, Christian L. Eberly, Mahliya Abdurahman, T. Michael Creed, Acong Yang, Taylor L. Hatchet, Tristan Dyson, Shuo Gu, Curt I. Civin, Tami J. Kingsbury   +11 more
wiley   +1 more source