Results 91 to 100 of about 77,494 (336)

Beyond the Trinity of ATM, ATR, and DNA-PK: Multiple Kinases Shape the DNA Damage Response in Concert With RNA Metabolism

open access: yesFrontiers in Molecular Biosciences, 2019
Our genome is constantly exposed to endogenous and exogenous sources of DNA damage resulting in various alterations of the genetic code. DNA double-strand breaks (DSBs) are considered one of the most cytotoxic lesions.
Kaspar Burger   +2 more
doaj   +1 more source

Flexible pri-miRNA structures enable tunable production of 5’ isomiRs

open access: yesRNA Biology, 2022
The Drosha cleavage of a pri-miRNA defines mature microRNA sequence. Drosha cleavage at alternative positions generates 5’ isoforms (isomiRs) which have distinctive functions. To understand how pri-miRNA structures influence Drosha cleavage, we performed
Xavier Bofill-De Ros   +6 more
doaj   +1 more source

Molecular medicine of microRNAs: structure, function and implications for diabetes [PDF]

open access: yes, 2008
MicroRNAs (miRNAs) are a family of endogenous small noncoding RNA molecules, of 19–28 nucleotides in length. In humans, up to 3% of all genes are estimated to encode these evolutionarily conserved sequences.
Duncan   +5 more
core   +1 more source

Polyferrocene‐Based Cubosomes: Conversion to Magnetic Mesoporous Microparticles, Supramolecular Modification, and Oxidation Response

open access: yesAdvanced Functional Materials, EarlyView.
Polyferrocene block copolymers are synthesized and assembled into micron‐sized polymer cubosomes with double diamond lattice and pore diameter of ≈30 nm. The ferrocene functionality is retained within the polymer cubosome wall as demonstrated on supramolecular modification, and oxidative disassembly.
Chin Ken Wong   +4 more
wiley   +1 more source

Structural basis for Dicer-like function of an engineered RNase III variant and insights into the reaction trajectory of two-Mg2+-ion catalysis

open access: yesRNA Biology, 2022
The RNase III family of dsRNA-specific endonucleases is exemplified by prokaryotic RNase III and eukaryotic Rnt1p, Drosha, and Dicer. Structures of Aquifex aeolicus RNase III (AaRNase III) and Saccharomyces cerevisiae Rnt1p (ScRnt1p) show that both ...
Sudhaker Dharavath   +2 more
doaj   +1 more source

Novel DICER-LIKE1 siRNAs Bypass the Requirement for DICER-LIKE4 in Maize Development [PDF]

open access: yesThe Plant Cell, 2015
Dicer enzymes function at the core of RNA silencing to defend against exogenous RNA or to regulate endogenous genes. Plant DICER-LIKE4 (DCL4) performs dual functions, acting in antiviral defense and in development via the biogenesis of trans-acting short-interfering RNAs (siRNAs) termed tasiR-ARFs. These small RNAs play an essential role in the grasses,
Katherine Petsch   +6 more
openaire   +3 more sources

A Human Kidney Tubuloid Model of Repeated Cisplatin‐Induced Cellular Senescence and Fibrosis for Drug Screening

open access: yesAdvanced Healthcare Materials, EarlyView.
Replicating aging and senescence‐related pathophysiological responses in kidney organoids remains a significant challenge. Human adult renal tubular organoid, tubuloids, are successfully developed recapitulating cellular senescence that is the central pathophysiological mechanism of chronic kidney disease (CKD).
Yuki Nakao   +20 more
wiley   +1 more source

The molecular architecture of human Dicer [PDF]

open access: yesNature Structural & Molecular Biology, 2012
Dicer is a multidomain enzyme that generates small RNAs for gene silencing in eukaryotes. Current understanding of Dicer structure is restricted to simple forms of the enzyme, whereas that of the large and complex Dicer in metazoans is unknown. Here we describe a new domain localization strategy developed to determine the structure of human Dicer by EM.
Lau, Pick-Wei   +5 more
openaire   +2 more sources

Real‐Time 3D Ultrasound Imaging with an Ultra‐Sparse, Low Power Architecture

open access: yesAdvanced Healthcare Materials, EarlyView.
This article presents a novel, ultra‐sparse ultrasound architecture that paves the way for wearable real‐time 3D imaging. By integrating a unique convolutional array with chirped data acquisition, the system achieves high‐resolution volumetric scans at a fraction of the power and hardware complexity.
Colin Marcus   +9 more
wiley   +1 more source

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