Results 31 to 40 of about 24,007,230 (395)

The use of aluminum trialkoxide for synthesis of poly (ε-caprolactone) and poly (δ-valerolactone): A comparative study [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2018
Four aluminum(III) trialkoxides, namely Al(III) ethoxide (1), Al(III) isopropoxide (2), Al(III) tert-butoxide (3), and Al(III) sec.-butoxide (4), were employed as initiators for the bulk ring-opening polymerizations of δ-valerolactone (VL) and ...
Jitrayut Jitonnom   +3 more
doaj   +1 more source

Localization Properties of Electronic States in Polaron Model of poly(dG)-poly(dC) and poly(dA)-poly(dT) DNA polymers [PDF]

open access: yes, 2004
We numerically investigate localization properties of electronic states in a static model of poly(dG)-poly(dC) and poly(dA)-poly(dT) DNA polymers with realistic parameters obtained by quantum-chemical calculation.
Barnett   +23 more
core   +2 more sources

The Dynamic Poly(A) Tail Acts as a Signal Hub in mRNA Metabolism

open access: yesCells, 2023
In eukaryotes, mRNA metabolism requires a sophisticated signaling system. Recent studies have suggested that polyadenylate tail may play a vital role in such a system.
Guiying Zhang   +4 more
doaj   +1 more source

Poly A- transcripts expressed in HeLa cells. [PDF]

open access: yesPLoS ONE, 2008
Transcripts expressed in eukaryotes are classified as poly A+ transcripts or poly A- transcripts based on the presence or absence of the 3' poly A tail.
Qingfa Wu   +9 more
doaj   +1 more source

iCLIP analysis of RNA substrates of the archaeal exosome

open access: yesBMC Genomics, 2020
Background The archaeal exosome is an exoribonucleolytic multiprotein complex, which degrades single-stranded RNA in 3′ to 5′ direction phosphorolytically. In a reverse reaction, it can add A-rich tails to the 3′-end of RNA.
Jochen Bathke   +9 more
doaj   +1 more source

Poly(rA) ioinos poly(rG) poly(rC) to form a tripie helix [PDF]

open access: yesNucleic Acids Research, 1992
Poly(rA) binds poly(rG).poly(rC) to form a triple helix. Evidence for this structure includes ultraviolet absorbance mixing curves and melting curves, and circular dichroism spectroscopy. The formation of the triple helix depends on the length of the poly(rC) strand. Triple helix forms when the average length is around 100 nucleotides but does not form
M, Chastain, I, Tinoco
openaire   +2 more sources

Inkjet printed metal insulator semiconductor (MIS) diodes for organic and flexible electronic application [PDF]

open access: yes, 2017
All inkjet printed rectifying diodes based on a metal-insulator-semiconductor (MIS) layer stack are presented. The rectifying properties were optimized by careful selection of the insulator interlayer thickness and the layout structure.
Baumann, Reinhard R.   +7 more
core   +1 more source

Birth of a poly(A) tail: mechanisms and control of mRNA polyadenylation

open access: yesFEBS Open Bio, 2023
During their synthesis in the cell nucleus, most eukaryotic mRNAs undergo a two‐step 3′‐end processing reaction in which the pre‐mRNA is cleaved and released from the transcribing RNA polymerase II and a polyadenosine (poly(A)) tail is added to the newly
Juan B. Rodríguez‐Molina   +1 more
doaj   +1 more source

Molecular mechanism of translational stalling by inhibitory codon combinations and poly(A) tracts

open access: yesbioRxiv, 2019
Inhibitory codon pairs and poly(A) tracts within the translated mRNA cause ribosome stalling and reduce protein output. The molecular mechanisms that drive these stalling events, however, are still unknown.
P. Tesina   +9 more
semanticscholar   +1 more source

Poly(A)-Driven and Poly(A)-Assisted Termination: Two Different Modes of Poly(A)-Dependent Transcription Termination [PDF]

open access: yesMolecular and Cellular Biology, 1998
We mapped the elements that mediate termination of transcription downstream of the chicken betaH- and betaA-globin gene poly(A) sites. We found no unique element and no segment of 3'-flanking DNA to be significantly more effective than any other. When we replaced the native 3'-flanking DNA with bacterial DNA, it too supported transcription termination.
G, Yeung   +6 more
openaire   +2 more sources

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