Results 331 to 340 of about 25,360,752 (379)

Modular molecular design of polymerized pro-estrogen materials enables controlled astrocyte response.

J Mater Chem B
Puhl DL, Ziemba A, Ellman SAT, Hsu A, Saksena J, Falcone PP, Balouch B, Rende D, Fink T, Zha RH, Gilbert RJ, Palermo EF.   +11 more
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Hole polarons in poly(G)-poly(C) and poly(A)-poly(T) DNA molecules [PDF]

Science in China Series B: Chemistry, 2008
The polaron might play an important role in the process of charge migration through duplex DNA stack. In the present work, we investigate properties of hole polarons in DNA molecules containing identical base pairs, such as poly(G)-poly(C) and poly(A)-poly(T), An extended tight-binding model (extended Su-Schrieffer-Heeger model), which involves the ...
Guiqing Zhang, Peng Cui, Chengbu Liu, Jian Wu   +3 more
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Structure of Poly (I)•Poly (A)•Poly (I)

Journal of Biomolecular Structure and Dynamics, 2000
The molecular structure of poly (I).poly (A).poly (I) has been determined and refined using the continuous intensity data on layer lines in the x-ray diffraction pattern obtained from an oriented fiber of this polymorphic RNA complex. The polymer forms a 12-fold right-handed triple-helix of pitch 39.7A and each base-triplet is stabilized by quasi Crick-
Struther Arnott, Andrea Giacometti, Rengaswami Chandrasekaran   +2 more
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Structure of Poly (U)•Poly (A)•Poly (U)

Journal of Biomolecular Structure and Dynamics, 2000
The molecular structure of poly (U).poly (A).poly (U) has been determined and refined using the continuous x-ray intensity data on layer lines in the diffraction pattern obtained from an oriented fiber of the RNA. The final R-value for the preferred structure is 0.24, far lower than that for the plausible alternatives.
Struther Arnott, Rengaswami Chandrasekaran, Andrea Giacometti   +2 more
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Structure of Poly (dT)·Poly (dA)·Poly (dT)

Journal of Biomolecular Structure and Dynamics, 2000
The molecular structure of poly (dT).poly (dA).poly (dT) has been determined and refined using the continuous x-ray intensity data on layer lines in the diffraction pattern obtained from an oriented fiber of the DNA. The final R-value for the preferred structure is 0.29 significantly lower than that for plausible alternatives.
Struther Arnott, Rengaswami Chandrasekaran, Andrea Giacometti   +2 more
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Structures for Poly(U).poly(A).poly(U) Triple Stranded Polynucleotides [PDF]

Nature New Biology, 1973
X-ray fibre diffraction studies indicate suitability of triple stranded polynucleotides for biological role.
Struther Arnott, Struther Arnott, P. J. Bond, P. J. Bond   +3 more
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Structures for the polynucleotide complexes poly(dA) · poly(dT) and poly(dT) · poly(dA) · poly(dT)

Journal of Molecular Biology, 1974
X-ray diffraction analyses of fibers of polydeoxyadenylic acid · polydeoxythymidylic acid show that this molecule exists as a 10-fold double-helix with axial rise per nucleotide h = 3.24 to 3.29 A. The structure is very similar to B-DNA (h = 3.37 A) in having C3-exo furanose rings and base-pairs positioned centrally on the helix axis, but distinctive ...
Erik Selsing, Struther Arnott
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Pulsed Electric Linear Dichroism of Poly(dA)·Poly(dT)·Poly(dT) and Poly(rA)·Poly(rU)·Poly(rU) in Solutions

Bulletin of the Chemical Society of Japan, 1997
Abstract The dependence of reduced dichroism (Δε/ε) of sonicated rodlike title triplexes with the counterion Mg2+, (dA)n·(dT)n·(dT′)n and (rA)n·(rU)n·(rU′)n, on the wavelength (190—300 nm) and on the applied-field strength (3.8—23.1 kV cm−1) was studied in aqueous ionic solutions at 7 °C.
Kiwamu Yamaoka, Kunihiko Gekko, Noriyuki Ojima   +2 more
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Poly(A) Extensions of miRNAs for Amplification-Free Electrochemical Detection on Screen-Printed Gold Electrodes.

Analytical Chemistry, 2016
Current amplification-based microRNA (miRNA) detection approaches are limited by the small sizes of miRNAs as well as amplification bias/artifacts. Herein, we report on an amplification-free miRNA assay based on elevated affinity interaction between ...
K. M. Koo, L. Carrascosa, M. Shiddiky, M. Trau   +3 more
semanticscholar   +1 more source