Results 101 to 110 of about 8,043 (217)

Phosphate absorption by Arabidopsis thaliana : the effects of phosphorus nutritional status : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Plant Biology and Biotechnology at Massey University, Palmerston North, New Zealand [PDF]

open access: yes, 1997
The effect of phosphorus nutritional status on phosphate uptake within the concentration range of the high affinity uptake mechanism, and subsequent translocation to the shoot was investigated in the plant species Arabidopsis thaliana.
Clark, Gregory Thomas
core  

Synthesis of Peptides, Peptide Nucleic Acid Components, and Other Biogenic Compounds From a Three‐Component Prebiotic Mixture

open access: yesChemistry – A European Journal, Volume 32, Issue 9, 2 March 2026.
High‐energy proton irradiation of a formamide–diaminomaleonitrile–glycine system in the presence of meteorites produces a broad spectrum of biogenic compounds, including nucleobases, nucleosides, peptides, and nucleobase–peptide conjugates, highlighting a chemically plausible prebiotic network.
Bruno Mattia Bizzarri   +6 more
wiley   +1 more source

Mechanochemical Reactivity of Ribonucleosides Mediated by Inorganic Species: Implications for Extraterrestrial Organic Matter Interpretation

open access: yesApplied Sciences
Metal species and carbonate are often found as minerals in extraterrestrial rocky bodies. Based on this, the mechanochemical-induced degradation of canonical purine and pyrimidine ribonucleosides into their corresponding nucleobases mediated by some of ...
Gustavo P. Maia   +7 more
doaj   +1 more source

The search for an identification of amino acids, nucleobases and nucleosides in samples returned from Mars [PDF]

open access: yes
The Mars Sample Return mission will provide us with a unique source of material from our solar system; material which could advance our knowledge of the processes of chemical evolution. As has been pointed out, Mars geological investigations based on the
Gehrke, Charles W.   +4 more
core   +1 more source

Degradation of nucleic acids with ozone. I. Degradation of nucleobases,ribonucleosides and ribonucleoside-5'-monophosphates.

open access: yesChemical and Pharmaceutical Bulletin, 1981
The degradation of nucleobases, ribonucleosides and ribonucleotides with ozone was examined as a model of the action of ozone on nucleic acids. The degradation rates of nucleobases were in the following order : G, T>U>C>A. Nucleosides and nucleotides were degraded in the same order as in the corresponding nucleobases.
K, Ishizaki   +3 more
openaire   +2 more sources

Methylation at position 32 of tRNA catalyzed by TrmJ alters oxidative stress response in Pseudomonas aeruginosa [PDF]

open access: yes, 2016
Bacteria respond to environmental stresses using a variety of signaling and gene expression pathways, with translational mechanisms being the least well understood.
Atichartpongkul, Sopapan   +12 more
core   +2 more sources

In vitro DNA/RNA Adductomics to Confirm DNA Damage Caused by Benzo[a]pyrene in the Hep G2 Cell Line

open access: yesFrontiers in Chemistry, 2019
In the development of new chemical substances, genetic toxicity evaluations are a high priority for safety risk management. Evaluation of the possibility of compound carcinogenicity with accuracy and at reasonable cost in the early stages of development ...
Toshihide Takeshita, Robert A. Kanaly
doaj   +1 more source

Nucleotides: Structure and Properties [PDF]

open access: yes, 2005
Nucleotides consist of a nitrogen-containing base, a five-carbon sugar, and one or more phosphate groups. Cells contain many types of nucleotides, which play a central role in a wide variety of cellular processes, including metabolic regulation and the ...
Bowater, RP
core   +1 more source

INTRACELLULAR Leishmania amazonensis KILLING INDUCED BY THE GUANINE NUCLEOSIDE 8-BROMOGUANOSINE

open access: yesRevista do Instituto de Medicina Tropical de São Paulo, 1998
In this study we investigated the effect of 8-Bromoguanosine, an immunostimulatory compound, on the cytotoxicity of macrophages against Leishmania amazonensis in an in vitro system. The results showed that macrophages treated with 8-Bromoguanosine before
GIORGIO Selma, BARÃO Sandra C.
doaj  

多細胞生物におけるrRNAのm1A修飾に関する研究 [PDF]

open access: yes, 2018
この博士論文は内容の要約のみの公開(または一部非公開)になっています筑波大学 (University of Tsukuba ...
YOKOYAMA Wataru, 横山 航
core   +1 more source

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