Results 201 to 210 of about 6,382 (260)
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Structure of Poly (U)•Poly (A)•Poly (U)
Journal of Biomolecular Structure and Dynamics, 2000The 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.
R, Chandrasekaran +2 more
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Structure of Poly (I)•Poly (A)•Poly (I)
Journal of Biomolecular Structure and Dynamics, 2000The 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-
R, Chandrasekaran +2 more
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Structure of Poly (dT)·Poly (dA)·Poly (dT)
Journal of Biomolecular Structure and Dynamics, 2000The 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.
R, Chandrasekaran +2 more
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2002
Abstract This chapter considers what was going on in ancient Greece three hundred years before there was any democracy. It shows that just as you could succeed without monarchy, so you could get on without groups of basileia congregating at out-of-the-way cult places.
exaly +2 more sources
Abstract This chapter considers what was going on in ancient Greece three hundred years before there was any democracy. It shows that just as you could succeed without monarchy, so you could get on without groups of basileia congregating at out-of-the-way cult places.
exaly +2 more sources
Structures for the polynucleotide complexes poly(dA) · poly(dT) and poly(dT) · poly(dA) · poly(dT)
Journal of Molecular Biology, 1974X-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 ...
Struther Arnott, Erik Selsing
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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.
Noriyuki Ojima +2 more
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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.
Noriyuki Ojima +2 more
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Structural transitions in poly(A), poly(C), poly(U), and poly(G) and their possible biological roles
Journal of Biomolecular Structure and Dynamics, 2018The homopolynucleotide (homo-oligonucleotide) tracts function as regulatory elements at various stages of mRNAs life cycle. Numerous cellular proteins specifically bind to these tracts. Among them are the different poly(A)-binding proteins, poly(C)-binding proteins, multifunctional fragile X mental retardation protein which binds specifically both to ...
Margarita I. Zarudnaya +3 more
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Raman studies of nucleic acids. VII. Poly A · poly U and poly G · Poly C
Biopolymers, 1972AbstractLaser‐excited Raman spectra of the double‐helical complexes poly A·poly U and poly G·poly C are reported for 2H2O and H2O solutions. The spectra are discussed in relation to their use as quantitative reference spectra for determining the dependence of the Raman scattering of RNA on secondary structure.
L, Lafleur, J, Rice, G J, Thomas
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Structures for Poly(U).poly(A).poly(U) Triple Stranded Polynucleotides
Nature New Biology, 1973X-ray fibre diffraction studies indicate suitability of triple stranded polynucleotides for biological role.
S, Arnott, P J, Bond
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