Results 21 to 30 of about 2,512,035 (335)

Tidying up international nucleotide sequence databases [PDF]

open access: yes, 2011
Sequence analysis of the ribosomal RNA operon, particularly the internal transcribed spacer (ITS) region, provides a powerful tool for identification of mycorrhizal fungi.
Abarenkov, Kessy   +12 more
core   +1 more source

ATR inhibition facilitates targeting of leukemia dependence on convergent nucleotide biosynthetic pathways. [PDF]

open access: yes, 2017
Leukemia cells rely on two nucleotide biosynthetic pathways, de novo and salvage, to produce dNTPs for DNA replication. Here, using metabolomic, proteomic, and phosphoproteomic approaches, we show that inhibition of the replication stress sensing kinase ...
Abt, Evan R   +20 more
core   +2 more sources

The evolution of nucleotides

open access: yesAdvances in Space Research, 1986
There has been much speculation about the types of molecules that were present in the first living forms. Recent discoveries show that RNA is a more versatile molecule than was previously believed, but whether it was ever able, for example, to synthesize its own monomers from available precursors is not yet known.
D. A. Usher, M.C. Needels
openaire   +3 more sources

Determination of total potentially available nucleosides in bovine milk [PDF]

open access: yes, 2010
Bovine colostrum and milk samples were collected from two herds over the course of the first month post-partum, pooled for each herd by stage of lactation and total potentially available nucleosides were determined.
Gill, Brendon D.   +2 more
core   +2 more sources

MMP-2 geno-phenotype is prognostic for colorectal cancer survival, whereas MMP-9 is not. [PDF]

open access: yes, 2008
The prognostic significance of single-nucleotide polymorphisms (SNPs) and tumour protein levels of MMP-2 and MMP-9 was evaluated in 215 colorectal cancer patients.
Hawinkels, LJAC   +8 more
core   +2 more sources

Molecular and morphometric variation in European populations of the articulate brachiopod Terebeatulina retusa [PDF]

open access: yes, 1993
Molecular and morphometric variation within and between population samples of the articulate brachiopod <i>Terebratulina</i> spp., collected in 1985-1987 from a Norwegian fjord, sea lochs and costal sites in western Scotland, the southern ...
A. C. Wilson   +35 more
core   +1 more source

Nucleotide imbalance decouples cell growth from cell proliferation

open access: yesNature Cell Biology, 2021
Nucleotide metabolism supports RNA synthesis and DNA replication to enable cell growth and division. Nucleotide depletion can inhibit cell growth and proliferation, but how cells sense and respond to changes in the relative levels of individual ...
Frances F. Diehl   +8 more
semanticscholar   +1 more source

Food-chain competition influences gene's size

open access: yes, 2006
We have analysed an effect of the Bak-Sneppen predator-prey food-chain self-organization on nucleotide content of evolving species. In our model, genomes of the species under consideration have been represented by their nucleotide genomic fraction and we
Bak   +16 more
core   +1 more source

Inhibition of Subsets of G Protein-coupled Receptors by Empty Mutants of G Protein α Subunits in Go, G11, and G16 [PDF]

open access: yes, 2000
We previously reported that the xanthine nucleotide binding Goα mutant, GoαX, inhibited the activation of Gi-coupled receptors. We constructed similar mutations in G11α and G16α and characterized their nucleotide binding and receptor interaction.
Gu, Lingjie, Simon, Melvin I., Yu, Bo
core   +1 more source

RNA interference is mediated by 21- and 22-nucleotide RNAs.

open access: yesGenes & Development, 2001
Double-stranded RNA (dsRNA) induces sequence-specific posttranscriptional gene silencing in many organisms by a process known as RNA interference (RNAi). Using a Drosophila in vitro system, we demonstrate that 21- and 22-nt RNA fragments are the sequence-
Sayda M. Elbashir   +2 more
semanticscholar   +1 more source

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