Results 61 to 70 of about 215,450 (265)

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Ubiquitin Regulation: The Histone Modifying Enzyme′s Story

open access: yesCells, 2018
Histone post-translational modifications influence many fundamental cellular events by regulating chromatin structure and gene transcriptional activity.
Jianlin Wang, Zhaoping Qiu, Yadi Wu
doaj   +1 more source

Post‐Translational Processing of Rat Ribosomal Proteins [PDF]

open access: yesEuropean Journal of Biochemistry, 1997
The complete amino acid sequences of rat and yeast (Saccharomyces cerevisiae) ribosomal proteins derived from precursors containing an N‐terminal ubiquitin or ubiquitin‐like sequence (C‐terminal extension proteins or CEPs) were determined and investigated for any post‐translational modifications by reverse‐phase HPLC purification, direct amino acid ...
N A, Williamson   +3 more
openaire   +2 more sources

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

open access: yesFEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva   +5 more
wiley   +1 more source

Cell density–dependent nuclear‐cytoplasmic shuttling of SETDB1 integrates with Hippo signaling to regulate YAP1‐mediated transcription

open access: yesFEBS Letters, EarlyView.
At low cell density, SETDB1 and YAP1 accumulate in the nucleus. As cell density increases, the Hippo pathway is gradually activated, and SETDB1 is associated with increased YAP1 phosphorylation. At high cell density, phosphorylated YAP1 is sequestered in the cytoplasm, while SETDB1 becomes polyubiquitinated and degraded by the ubiquitin–proteasome ...
Jaemin Eom   +3 more
wiley   +1 more source

PRISMA: Protein Interaction Screen on Peptide Matrix Reveals Interaction Footprints and Modifications- Dependent Interactome of Intrinsically Disordered C/EBPβ

open access: yesiScience, 2019
Summary: CCAAT enhancer-binding protein beta (C/EBPβ) is a pioneer transcription factor that specifies cell differentiation. C/EBPβ is intrinsically unstructured, a molecular feature common to many proteins involved in signal processing and epigenetics ...
Gunnar Dittmar   +12 more
doaj   +1 more source

Post-translational Processing and Turnover Kinetics of Presynaptically Targeted Amyloid Precursor Superfamily Proteins in the Central Nervous System [PDF]

open access: yesJournal of Biological Chemistry, 1998
The amyloid precursor superfamily is composed of three highly conserved transmembrane glycoproteins, the amyloid precursor protein (APP) and amyloid precursor-like proteins 1 and 2 (APLP1, APLP2), whose functions are unknown. Proteolytic cleavage of APP yields the betaA4 peptide, the major component of cerebral amyloid in Alzheimer's disease.
A W, Lyckman   +4 more
openaire   +2 more sources

Adenosine‐to‐inosine editing of miR‐200b‐3p is associated with the progression of high‐grade serous ovarian cancer

open access: yesMolecular Oncology, EarlyView.
A‐to‐I editing of miRNAs, particularly miR‐200b‐3p, contributes to HGSOC progression by enhancing cancer cell proliferation, migration and 3D growth. The edited form is linked to poorer patient survival and the identification of novel molecular targets.
Magdalena Niemira   +14 more
wiley   +1 more source

YAP1::TFE3 mediates endothelial‐to‐mesenchymal plasticity in epithelioid hemangioendothelioma

open access: yesMolecular Oncology, EarlyView.
The YAP1::TFE3 fusion protein drives endothelial‐to‐mesenchymal transition (EndMT) plasticity, resulting in the loss of endothelial characteristics and gain of mesenchymal‐like properties, including resistance to anoikis, increased migratory capacity, and loss of contact growth inhibition in endothelial cells.
Ant Murphy   +9 more
wiley   +1 more source

Focal cerebral ischemia in rats alters APP processing and expression of Aβ peptide degrading enzymes in the thalamus

open access: yesNeurobiology of Disease, 2009
We have previously demonstrated aggregation of amyloid precursor protein (APP) and β-amyloid (Aβ) to dense plaque-like deposits in the thalamus of rats subjected to transient middle cerebral artery occlusion (MCAO).
Mikko Hiltunen   +6 more
doaj   +1 more source

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