Results 221 to 230 of about 31,618 (270)
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Localization of phosphoprotein C23 in nucleoli by immunological methods
Experimental Cell Research, 1981Abstract Antiserum to a major phosphorylated nucleolar protein. C23 (MW 103000, pI 5.2) from Novikoff hepatoma was produced in rabbits. By immunodiffusion analysis, the antiserum produced precipitin bands and with various crude extracts of nucleoli, but not with extranucleolar or cytosol fractions.
M O, Olson, K, Guetzow, H, Busch
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Localization of nucleolar phosphoproteins B23 and C23 during mitosis
Experimental Cell Research, 1983Nucleolar phosphoproteins B23 and C23 were simultaneously localized in unsynchronized male rat-kangaroo PtK2 cells during mitosis using a mouse monoclonal antibody against protein B23 and a rabbit antibody against protein C23. The distribution of proteins B23 and C23 during mitosis was compared with the distribution of the silver staining protein ...
P O'Leary, H Busch
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Synthesis of the C23–C32 fragment of spirangien
Tetrahedron Letters, 2007Abstract The synthesis of the C23–C32 fragment of spirangien A is reported using Evans’ alkylation, Evans–Metternich aldol reaction and a substrate controlled stereoselective reduction.
Michael Lorenz, Markus Kalesse
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A C23-type Modification of ThAs2
Nature, 1966ThAs2 was reported to crystallize in the tetragonal Cu2Sb or C38 type of structure1. In an attempt to synthesize this phase by reacting arsenic with thorium powder at temperatures between 600° and 900° C, a new modification was obtained. This low-temperature form α-ThAs2 is orthorhombic and of the C23 type. Its lattice constants are:
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Nucleolin (C23), a physiological substrate for casein kinase II
Biochemical and Biophysical Research Communications, 1988Nucleolin (C23), a 110 kDa phosphoprotein, which is mainly found in the nucleolus has been shown to be a physiological substrate for casein kinase II (CKII). Nucleolin was identified and characterized by immunodetection using an anti-nucleolin antibody.
H R, Schneider, O G, Issinger
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Association of protein C23 with rapidly labeled nucleolar RNA
Biochemistry, 1986The association of nucleolar phosphoprotein C23 with preribosomal ribonucleoprotein (RNP) particles was examined in Novikoff hepatoma nucleoli. RNA was labeled with [3H]uridine for various times in cell suspensions, and RNP particles were extracted from isolated nucleoli and fractionated by sucrose gradient ultracentrifugation.
A H, Herrera, M O, Olson
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Synthesis and Structural Revision of Symbiodinolide C23−C34 Fragment
The Journal of Organic Chemistry, 2009Stereoselective synthesis of the C23-C34 fragment of symbiodinolide, which possesses the originally proposed stereochemistry, and its diastereomers was achieved in 19 steps from L-aspartic acid, respectively. Comparison of spectroscopic data of the synthetic products with those of the degraded product of symbiodinolide led to a structural revision of ...
Takeshi, Murata +4 more
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Synthesis of C13-C23 Fragment of Iriomoteolide-1a
Synthesis, 2009Highly efficient asymmetric conjugate addition of MeMgBr to α,β-unsaturated esters catalyzed by CuI/Tol-BINAP, Paterson aldol, organocatalytic aldol, and cross-metathesis reactions were applied in the synthesis of C13-C23 fragment of Iriomoteolide-la.
Teck-Peng Loh +2 more
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"A prologue" - Manuscript of Gallup C23
Page 115 verso has note: "Extra Expense for Christmas Cover", "Prologue, Ezra Pound, 126 Greenwich Ave., New York City", "50.00", "for Christmas 1910 cover", "10/31/10"; on p. 111 recto "Printed copy of this to follow". "A Prologue" was reprinted in Canzoni (Gallup A7), 1911, p. 34 (with an additional four lines added at the end).openaire +1 more source