Results 71 to 80 of about 1,684,114 (372)

Prebiotic Chemistry: The Role of Trimetaphosphate in Prebiotic Chemical Evolution

open access: yesFrontiers in Chemistry, 2022
Life’s origins have always been a scientific puzzle. Understanding the production of biomolecules is crucial for understanding the evolution of life on Earth.
Dingwei Gan   +6 more
doaj   +1 more source

Estimation of the number of nucleotide substitutions when there are strong transition-transversion and G+C-content biases.

open access: yesMolecular biology and evolution, 1992
A simple mathematical method is developed to estimate the number of nucleotide substitutions per site between two DNA sequences, by extending Kimura's (1980) two-parameter method to the case where a G+C-content bias exists.
K. Tamura
semanticscholar   +1 more source

The power of microRNA regulation—insights into immunity and metabolism

open access: yesFEBS Letters, EarlyView.
MicroRNAs are emerging as crucial regulators at the intersection of metabolism and immunity. This review examines how miRNAs coordinate glucose and lipid metabolism while simultaneously modulating T‐cell development and immune responses. Moreover, it highlights how cutting‐edge artificial intelligence applications can identify miRNA biomarkers ...
Stefania Oliveto   +2 more
wiley   +1 more source

A potential biomarker of cognitive impairment: The olfactory dysfunction and its genes expression

open access: yesAnnals of Clinical and Translational Neurology, Volume 9, Issue 12, Page 1884-1897, December 2022., 2022
Abstract Objective Accumulation evidence has reported that olfactory impairment may be an essential clinical marker and predictor of mild cognitive impairment or Alzheimer's disease. Method Participants were enrolled in the population‐based, prospective study in Fuxin county, Liaoning province, China between 2019 and 2021.
Jiayi Song   +11 more
wiley   +1 more source

Bacteria compositions and metabolites of kimchi as affected by salted shrimp (saeujeot)

open access: yesInternational Journal of Food Properties, 2022
This study aimed to investigate the effects of salted shrimp on kimchi fermentation. Four types of kimchi (KWD, KWR, KWC, and KWY), based on the variety of salted shrimp (Detteugijeot, Red shrimp jeot, Chujeot, and Yukjeot, respectively), were prepared ...
Ju-Young Lim   +11 more
doaj   +1 more source

Beyond aerobic glycolysis: Transformed cells can engage in glutamine metabolism that exceeds the requirement for protein and nucleotide synthesis

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2007
Tumor cell proliferation requires rapid synthesis of macromolecules including lipids, proteins, and nucleotides. Many tumor cells exhibit rapid glucose consumption, with most of the glucose-derived carbon being secreted as lactate despite abundant oxygen
R. Deberardinis   +6 more
semanticscholar   +1 more source

Unlocking the potential of tumor‐derived DNA in urine for cancer detection: methodological challenges and opportunities

open access: yesMolecular Oncology, EarlyView.
Urine is a rich source of biomarkers for cancer detection. Tumor‐derived material is released into the bloodstream and transported to the urine. Urine can easily be collected from individuals, allowing non‐invasive cancer detection. This review discusses the rationale behind urine‐based cancer detection and its potential for cancer diagnostics ...
Birgit M. M. Wever   +1 more
wiley   +1 more source

Clinical heterogeneity in a family with flail arm syndrome and review of hnRNPA1‐related spectrum

open access: yesAnnals of Clinical and Translational Neurology, Volume 9, Issue 12, Page 1910-1917, December 2022., 2022
Abstract Objective Flail arm syndrome (FAS) is one of the atypical subtypes of amyotrophic lateral sclerosis (ALS). Mutations in hnRNPA1 encoding heterogeneous nuclear ribonucleoprotein (hnRNP) A1 are a rare genetic cause of ALS. Herein, marked clinical heterogeneity of FAS in a pedigree with a known hnRNPA1 variant was described to raise early ...
Xiaochen Han   +5 more
wiley   +1 more source

Dependence of nucleotide physical properties on their placement in codons and determinative degree [PDF]

open access: yesJournal of Zhejiang University SCIENCE (2005) Vol. 6B, No. 10, pp.948-960, 2007
Various physical properties such as dipole moment, heat of formation and energy of the most stable formation of nucleotides and bases were calculated by PM3 (modified neglect of diatomic overlap, parametric method number 3) and AM1 (Austin model 1) methods. As distinct from previous calculations, for nucleotides the interaction with neighbours is taken
arxiv   +1 more source

The international nucleotide sequence database collaboration

open access: yesNucleic Acids Res., 2020
The International Nucleotide Sequence Database Collaboration (INSDC; http://www.insdc.org/) has been the core infrastructure for collecting and providing nucleotide sequence data and metadata for >30 years.
Masanori Arita   +2 more
semanticscholar   +1 more source

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