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ChemInform Abstract: Ozonolyses of Cytosines and Guanine.
ChemInform, 1991AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Hiroshige Muramatsu +3 more
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Guanine Uptake by Human Erythrocytes
1991It has been clearly established that mature human erythrocytes cannot synthesize de novo purines (1); consequently the turnover of purine nucleotides in red cells must result from the continual entry and release of purines. Hypoxanthine and adenine uptake by human erythrocytes has been studied in our laboratories (2–4).
SPOTO, Giuseppe +2 more
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A-like guanine-guanine stacking in the aqueous DNA duplex of d(GGGGCCCC)
Journal of Molecular Biology, 2001We have used CD spectroscopy, NMR spectroscopy and unrestrained molecular dynamics to study conformational properties of a DNA duplex formed by the self-complementary octamer d(GGGGCCCC). Its unusual CD spectrum contains features indicating A-like stacking of half of the bases, whereas the other half stack in a B-like fashion.
Michaela Vorlíčková +5 more
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Transglycosylation of Guanine Nucleosides
Nucleosides and Nucleotides, 1987Abstract Tetraacetylguanosine was converted into fully acetylated derivatives of acyclovir and 9-β-D-xylofuranosyl guanine in a novel transglyco-sylation ...
Jeratzy Boryski, Bozenna Golankiewicz
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Lipophilicity of guanine derivatives
International Journal of Pharmaceutics, 1989Abstract Lipid-water partition coefficients for acyclovir and deoxyacyclovir were determined by partition experiment. The ionisation constants and the real partition coefficients were calculated by linear regression methods. The contradiction in lipophilicity and water solubility for acyclovir and deoxyacyclovir as determined previously (Kozjek et al.
Albin Kristl +3 more
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THE MECHANISM AND SPECIFICITY OF GUANINE DEAMINASE
Canadian Journal of Biochemistry, 1967Guanine deaminase from lingcod muscle has been found to remove chlorine from 2-chloro-6-hydroxypurine, hydrazine from 2-hydrazino-6-hydroxypurine, and methylamine from 2-methylamino-6-hydroxypurine, with xanthine as the product in all cases. Methylation of guanine on nitrogen atoms other than N-1 and substitutions at C-6 eliminate susceptibility to ...
Joan E. Roy, Kenneth L. Roy
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Synthesis of monomers containing guanine or guanine precursors as substituent groups
Journal of Polymer Science Part A: Polymer Chemistry, 1991AbstractThe synthesis of four new monomers containing guanine or a guanine precursor was achieved. These were two isomeric acid ester derivatives of guanine and two isomeric vinyl ether derivatives of N2‐acetylguanine. In the case of the synthesis of the guanine acid esters IV and V, it was necessary to prepare first the guanine alcohol derivatives II ...
Maria A. Aponte, Isabel Toucet
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Antibodies to the Terminal Moieties of Guanine Mononucleotides and Guanine-Containing Dinucleotides
1968Antibodies specific for nucleic acids have been obtained by immunizing rabbits with conjugates composed of bases, nucleosides or nucleotides covalently linked to proteins or polyamino acids. The chemical methods used to prepare such immunogens have been reviewed (Levine and Stollar, 1967) and the characteristics of some of these antibodies are ...
Edna Seaman +2 more
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Photodynamic degradation of guanine
Biochemical and Biophysical Research Communications, 1964J.S. Sussenbach, W. Berends
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A fluorimetric assay for guanine aminohydrolase
Analytical Biochemistry, 1974Abstract A rapid, sensitive, and versatile assay for guanine aminohydrolase is described. It is based on the difference in native fluorescence of guanine, the substrate, and xanthine, the reaction product when excitation and emission wavelengths are 285 nm and 345 nm, respectively.
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