Results 71 to 80 of about 53,303 (248)

New Aspects of HECT-E3 Ligases in Cell Senescence and Cell Death of Plants

Plants, 2019
Plant cells undergo massive orderly changes in structure, biochemistry, and gene expression during cell senescence. These changes cannot be distinguished from the hydrolysis/degradation function controlled by the ubiquitination pathway, autophagy, and ...
Wei Lan, Ying Miao
doaj   +1 more source

ADP‐ribosylation: An emerging regulator of the epigenome

Molecular Oncology, EarlyView.
ADP‐ribosylation has emerged as a dynamic epigenetic signaling mechanism that modifies histones and chromatin‐associated proteins. Through coordinated PARylation and MARylation, it integrates with other histone modifications to regulate chromatin structure, transcription factor activity, and gene expression, influencing genome function and disease ...
Cristel V. Camacho, Chenqian Liu, W. Lee Kraus   +2 more
wiley   +1 more source

Tankyrases Promote Homologous Recombination and Check Point Activation in Response to DSBs.

PLoS Genetics, 2016
DNA lesions are sensed by a network of proteins that trigger the DNA damage response (DDR), a signaling cascade that acts to delay cell cycle progression and initiate DNA repair.
Zita Nagy, Alkmini Kalousi, Audrey Furst, Marc Koch, Benoit Fischer, Evi Soutoglou   +5 more
doaj   +1 more source

Unraveling the epigenetic code in cancer cell–tumor microenvironment crosstalk

Molecular Oncology, EarlyView.
Epigenetic regulation is a key driver of cancer development and progression. Diverse epigenetic alterations in cancer cells and components of the tumor microenvironment (TME) orchestrate their communication through multiple mechanisms. We discuss how the epigenetic code coordinates bidirectional cancer cell–TME crosstalk to promote cancer progression ...
Ji Hoon Park, Mi‐Young Kim
wiley   +1 more source

MDC1 mediates Pellino recruitment to sites of DNA double-strand breaks

Life Science Alliance
RING E3 ubiquitin ligases Pellino 1 and 2 are recruited to sites of DNA damage via their non-canonical FHA domains that recognise conserved phosphorylated sequence motifs in the DNA damage adaptor protein MDC1.
Mònica Torres Esteban, Matthew J Stewart, Eilis Bragginton, Alice Meroni, Annica Pellizzari, Alain Jeanrenaud, Stephen J Smerdon, Manuel Stucki   +7 more
doaj   +1 more source

The STUbL RNF4 regulates protein group SUMOylation by targeting the SUMO conjugation machinery

Nature Communications, 2017
SUMO and ubiquitin are key signal transducers in several cellular processes including the DNA-damage response. Here the authors describe a method for selective enrichment of ubiquitin substrates for E3 ligases from complex cellular proteomes and identify
Ramesh Kumar, Román González-Prieto, Zhenyu Xiao, Matty Verlaan-de Vries, Alfred C. O. Vertegaal   +4 more
doaj   +1 more source

Mammalian DNA ligases. Biosynthesis and intracellular localization of DNA ligase I.

Journal of Biological Chemistry, 1990
Mammalian DNA ligase I is presumed to act in DNA replication. Rabbit antibodies against the homogeneous enzyme from calf thymus inhibited DNA ligase I activity and consistently recognized a single polypeptide of 125 kDa when cells from an established bovine kidney cell line (MDBK) were lysed rapidly by a variety of procedures and subjected to ...
D D, Lasko, A E, Tomkinson, T, Lindahl
openaire   +2 more sources

Arginine methylation as a regulatory ratchet in cancer: From substrate selection to malignant‐state stabilization

Molecular Oncology, EarlyView.
Arginine methylation can be viewed as a persistence‐prone post‐translational modification regulated by a network of PRMTs. Competitive and compensatory interactions among PRMTs can redistribute methylation across substrate pools shaped by sequence, structural, spatial, and environmental layers, reinforcing RNA‐processing, chromatin, and signaling ...
So Hyun Kwon, Ji Min Lee
wiley   +1 more source

Comparative analysis of T4 DNA ligases and DNA polymerases used in chromosome conformation capture assays

BioTechniques, 2015
Three-dimensional (3-D) genome organization in the nuclear space affects various genomic functions. Circular chromosome conformation capture (4C-seq) is a powerful technique that allows researchers to measure long-range chromosomal interactions with a ...
Michal Schwartz, Avital Sarusi, Rachel T. Deitch, Moran Tal, Dana Raz, Myong-Hee Sung, Tommy Kaplan, Ofir Hakim   +7 more
doaj   +1 more source

Loss of AMBRA1 activates MAPK and angiogenesis signaling pathways in melanoma cells

FEBS Open Bio, EarlyView.
Loss of AMBRA1 in melanoma cells activates multiple oncogenic pathways associated with tumor progression. Transcriptomic and protein network analyses revealed that AMBRA1 depletion enhances MAPK/ERK signaling, angiogenesis, TGF‐β/EMT signaling, and Wnt/axon guidance pathways.
Milad Ibrahim, Marco Corazzari, Iman Osman, Jane Armstrong, Noel Carter   +4 more
wiley   +1 more source