The evolutionary history of Class I aminoacyl-tRNA synthetases (aaRS) through the reconstruction of ancestral sequences is presented. From structural molecular modeling, we sought to understand its relationship with the acceptor arms and the tRNA anticodon loop, how this relationship was established, and the possible implications in determining the genetic code and the translation system. The results of the molecular docking showed that in 7 out 9 aaRS, the acceptor arm and the anticodon loop bond practically in the same region. Domain accretion process in aaRS and repositioning of interactions between tRNAs and aaRS are illustrated. Based on these results, we propose that the operational code and the anticodon code coexisted, competing for the aaRS catalytic region, while consequently contributed to the stabilization of these proteins.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s00239-021-10029-x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The Social Construction of Categorical Data: Mixed Methods Approach to Assessing Data Features in Publicly Available Datasets.
JMIR Med Inform
January 2025
Institute of History and Ethics in Medicine, School of Medicine and Health, Technical University of Munich, Munich, Germany.
Background: In data-sparse areas such as health care, computer scientists aim to leverage as much available information as possible to increase the accuracy of their machine learning models' outputs. As a standard, categorical data, such as patients' gender, socioeconomic status, or skin color, are used to train models in fusion with other data types, such as medical images and text-based medical information. However, the effects of including categorical data features for model training in such data-scarce areas are underexamined, particularly regarding models intended to serve individuals equitably in a diverse population.
View Article and Find Full Text PDFLearning From Full Characterization of HIV Proviruses in People Receiving Long-Acting Cabotegravir/Rilpivirine With a History of Replication on the Antiretroviral Classes.
Open Forum Infect Dis
January 2025
CHU d'Orléans, Orléans, France.
Background: To better understand factors associated with virologic response, we retrospectively characterized the HIV proviruses of 7 people with HIV who received long-acting cabotegravir/rilpivirine (CAB/RPV-LA) and were selected according to the following criteria: virologic control achieved despite a history of viral replication on 1 or both corresponding antiretroviral classes (n = 6) and virologic failure (VF) after CAB/RPV-LA initiation (n = 1).
Methods: Last available blood samples before the initiation of CAB/RPV-LA were analyzed retrospectively. Near full-length HIV DNA genome haplotypes were inferred from Nanopore sequencing by the in vivo Genome Diversity Analyzer to search for archived drug resistance mutations (DRMs) and evaluate the frequency and intactness of proviruses harboring DRMs.
Systemic Lupus Erythematosus Presenting as Anorexia Nervosa in a Middle-Aged Woman: A Rare Case Report and Literature Review.
Immun Inflamm Dis
January 2025
Department of Internal Medicine, Al-Khor Hospital, Hamad Medical Corporation, Doha, Qatar.
Background: Systemic lupus erythematosus (SLE) is a complex autoimmune disease with multisystemic involvement and unclear etiology. Although SLE could be linked to multiple neuropsychiatric manifestations, the co-occurrence of anorexia nervosa was only described through a few case reports that mainly affected children and adolescents.
Case Presentation: a 40-year-old Filipina woman presented to hospital with a 3-day history of agitation, anorexia and auditory hallucinations.
Seroprevalence of dengue, Zika, and chikungunya in São Sebastião, Brazil (2020-2021): a population-based survey.
BMC Infect Dis
January 2025
Interdisciplinary Laboratory of Biosciences, Faculty of Medicine, University of Brasília, Federal District, Brasília, Brazil.
Background: Urban arboviruses pose a significant global burden, particularly in tropical regions like Brazil. São Sebastião, a lower-middle-class urban area just 26 km from the Brazilian capital, is an endemic area for dengue. However, asymptomatic cases may obscure the actual extent of the disease.
View Article and Find Full Text PDFThe history of the Croatian pharmaceutical company PLIVA from the very beginning to the status of a recognisable European and global player is described. Special attention is paid to PLIVA's cooperation with the Croatian Nobel laureate Vladimir Prelog and the invention of the proprietary antibiotic azithromycin. The antibiotic was commercialised in cooperation with the US-based company Pfizer.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!