Results 271 to 280 of about 547,441 (316)
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A poly(U) polymerase in tobacco leaves
Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1975A poly(U) polymerizing enzyme has been found in healthy and tobacco mosaic virus-infected tobacco leaves and has been partially purified by affinity chromatography on a gel prepared from agarose with chemically coupled RNA. The enzyme is stimulated by Mn-2+ and dependent on a polynucleotide, preferentially poly(A).
S, Brishammar, N, Juntti
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Poly(U) polymerase in rat brain
Nature, 1975MUCH interest has centred recently on the discoveries of ribohomopolymer sequences in RNAs of eukaryotic cells. Poly(A)1–3, poly(U)4 and poly(G)5 regions have been found in nuclear and cytoplasmic RNA fractions. These sequences are thought to have special implications for regulation of biological functions of RNAs.
N, Hozumi +4 more
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Structure of the β-Form of Poly d(A) Poly d(U)
Journal of Biomolecular Structure and Dynamics, 1989The crystalline beta-form of the sodium salt of poly d(A).poly d(U) trapped in oriented fibers forms a Watson-Crick base-paired, 10(1) double-helix of pitch 3.2 nm. Two molecules are present in a monoclinic unit cell apparently isomorphous with beta-poly d(A).poly d(T). The two chains in each molecule both carry C2'-endo puckered furanose rings but are
R, Chandrasekaran +3 more
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The interaction of quinacrine with triple-stranded poly(U).poly(A).poly(U).
Nucleic acids symposium series, 1996The interaction of the antimalarial drug quinacrine (QAC) with triple-stranded poly(U).poly(A).poly(U)(poly(U.A.U)) has been investigated by absorption, fluorescence and circular dichroism (CD) measurements. The results indicate that QAC binds to poly(U.A.U), as well as double-stranded poly (A).poly(U) (poly(A.U)) and poly(I).poly(C) (poly(I.C)). It is
S, Tani, Y, Kubota
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Toxicology Letters, 1982
Poly(A):poly(U) (polyadenylic acid:polyuridylic acid hybrid); poly(O8A):poly(U) (poly-8-oxy-adenylic acid:polyuridylic acid hybrid); poly(A):poly(MeNH5U) (polyadenylic acid-5-methylamino uridylic acid hybrid) and poly(O8A):poly(MeNH5U) (poly-8-oxyadenylic acid:poly-5-methylamino uridylic acid hybrid) were studied in chick embryos to compare the ...
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Poly(A):poly(U) (polyadenylic acid:polyuridylic acid hybrid); poly(O8A):poly(U) (poly-8-oxy-adenylic acid:polyuridylic acid hybrid); poly(A):poly(MeNH5U) (polyadenylic acid-5-methylamino uridylic acid hybrid) and poly(O8A):poly(MeNH5U) (poly-8-oxyadenylic acid:poly-5-methylamino uridylic acid hybrid) were studied in chick embryos to compare the ...
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Heats of the helix–coil transitions of the poly A–poly U complexes
Biopolymers, 1968AbstractThe heats of the conformational transitions of poly (A + U) and poly(A + 2U) were determined in a twin‐cell differential thermal analysis microcalorimeter capable of measuring heat effects of 25–35 meal, in reactions of this type, with a precision of about 3%.
H, Krakauer, J M, Sturtevant
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A Kinetic Study of the Intercalation of Ethidium Bromide into Poly(A)·Poly(U)
The Journal of Physical Chemistry B, 2002The equilibria and kinetics of the intercalation of ethidium bromide (EB) into poly(A).poly(U) have been studied in aqueous solution (pH = 7.0, 1 M NaCI, 25 °C) by spectrophotometry, spectrofluorimetry, and stopped-flow techniques. The analysis of the binding isotherms yields the site binding constant K = 2.6 x 10 4 M - 1 and the site size n = 2.2 ...
M. L. DAMICO +3 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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Molecular Immunology, 1982
Anti-poly(A).poly(U) antibodies in ascitic fluid of DDY mice immunized with poly(A).poly(U)-methylated bovine serum albumin complexes were fractionated into three major antibody populations, Ab-1, Ab-2 and Ab-3, by precipitating with poly(I).poly(C), poly(A).poly(U), and poly(A).2 poly(U), respectively.
Y, Kitagawa, E, Okuhara
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Anti-poly(A).poly(U) antibodies in ascitic fluid of DDY mice immunized with poly(A).poly(U)-methylated bovine serum albumin complexes were fractionated into three major antibody populations, Ab-1, Ab-2 and Ab-3, by precipitating with poly(I).poly(C), poly(A).poly(U), and poly(A).2 poly(U), respectively.
Y, Kitagawa, E, Okuhara
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Oligo(U)- and poly(U)-containing RNA of wheat embryo
Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1980A UMP-rich RNA fraction was separated from the bulk cellular RNA by affinity chromatography of wheat embryo total RNA. The obtained preparation was heterogeneous and contained polyribonucleotide chain segments which were resistant to RNAase T1 and consisted mainly of UMP residues (87 mol%).
M, Dobrzanska +2 more
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