Results 61 to 70 of about 298,923 (289)

Screening and Identification of Novel DNA Aptamer for Targeted Delivery to Injured Podocytes in Glomerular Diseases

open access: yesAdvanced Science, EarlyView.
This study develops RLS‐2, a high‐affinity aptamer that specifically targets injured podocytes, making it a promising candidate for targeted drug delivery. In vitro, RLS‐2 shows stability, specificity, efficient siRNA delivery via AsiCs, and uptake by podocytes.
Chao Zhou   +9 more
wiley   +1 more source

Sequence evidence in the archaeal genomes that tRNAs emerged through the combination of ancestral genes as 5' and 3' tRNA halves. [PDF]

open access: yesPLoS ONE, 2008
The discovery of separate 5' and 3' halves of transfer RNA (tRNA) molecules-so-called split tRNA-in the archaeal parasite Nanoarchaeum equitans made us wonder whether ancestral tRNA was encoded on 1 or 2 genes.
Kosuke Fujishima   +3 more
doaj   +1 more source

Aminoacyl tRNA synthetase complex interacting multifunctional protein 1 simultaneously binds Glutamyl-Prolyl-tRNA synthetase and scaffold protein aminoacyl tRNA synthetase complex interacting multifunctional protein 3 of the multi-tRNA synthetase complex [PDF]

open access: yes, 2018
Higher eukaryotes have developed extensive compartmentalization of amino acid (aa) - tRNA coupling through the formation of a multi-synthetase complex (MSC) that is composed of eight aa-tRNA synthetases (ARS) and three scaffold proteins: aminoacyl tRNA ...
Bartlett, Seamus   +2 more
core   +1 more source

Sperm‐Derived CircRNA‐1572 Regulates Embryogenesis and Zygotic Genome Activation by Targeting CCNB2 via Bta‐miR‐2478‐L‐2

open access: yesAdvanced Science, EarlyView.
Sperm‐derived circRNA‐1572 competitively binds to bta‐miR‐2478‐L‐2 through a “sponge” mechanism to regulate cyclin B2 (CCNB2) expression, thereby modulating the distribution of fibrous actin (F‐actin) in early pig embryos, ensuring proper chromosome segregation during mitosis, and facilitating normal embryo cleavage and zygotic genome activation.
Yanfang Wu   +10 more
wiley   +1 more source

How to Motivate Science Teachers to Use Science Experiments [PDF]

open access: yesJournal of Systemics, Cybernetics and Informatics, 2012
A science experiment is the core tool in science education. This study describes the science teachers' professional competence to implement science experiments in teaching/learning science.
Josef Trna
doaj  

Uncharged tRNA Activates GCN2 by Displacing the Protein Kinase Moiety from a Bipartite tRNA-Binding Domain [PDF]

open access: yes, 2000
Protein kinase GCN2 regulates translation in amino acid–starved cells by phosphorylating eIF2. GCN2 contains a regulatory domain related to histidyl-tRNA synthetase (HisRS) postulated to bind multiple deacylated tRNAs as a general sensor of starvation ...
Anderson, James T.   +4 more
core   +1 more source

Role of the Bifunctional Aminoacyl-tRNA Synthetase EPRS in Human Disease [PDF]

open access: yes, 2020
Aminoacyl-tRNA synthetases (AARS) are a class of enzymes that catalyze the charging of tRNAs with cognate amino acids, a critical step that contributes to the fidelity of protein synthesis.
Kudlapur, Nathan
core  

Hierarchical Regulatory Networks Reveal Conserved Drivers of Plant Drought Response at the Cell‐Type Level

open access: yesAdvanced Science, EarlyView.
This study presents a comprehensive multi‐omics framework to uncover cell‐type‐specific regulatory networks in plant drought responses. By integrating transcriptomic, proteomic, and epigenetic data from nearly 30 000 samples, key regulators such as CIPK23 and NLP7 are identified, revealing insights into conserved drought tolerance mechanisms and ...
Moyang Liu   +9 more
wiley   +1 more source

Mitochondrial stress in advanced fibrosis and cirrhosis associated with chronic hepatitis B, chronic hepatitis C, or nonalcoholic steatohepatitis

open access: yesHepatology, EarlyView., 2022
Adaptive mitochondrial mechanisms allow mitochondrial resilience and prevent the worsening of fibrosis, while deregulation of these mechanisms promotes the progression from no/minimal‐mild (F0‐F2) fibrosis to advanced fibrosis and cirrhosis (F3‐F4). Abstract Background and Aims Hepatitis B virus (HBV) infection causes oxidative stress (OS) and alters ...
Dimitri Loureiro   +17 more
wiley   +1 more source

15N NMR study of a mixture of uniformly labeled tRNAs [PDF]

open access: yes, 1982
15N NMR spectra were taken of 15N-enriched tRNA extracted from bakers yeast; ammonium sulfate was used as a nitrogen source. The increase in the degree of denaturation of tRNA, which occurs with increase in temperature from 30 degrees C to 70 degrees C ...
Birdseye, Theresa R.   +3 more
core   +1 more source

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