نتایج جستجو برای: guanosine

تعداد نتایج: 18281  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2014
davar mohammadi boghai bahram ghanbari massoud hassanpoor

the complexes of mn(oac)3 and/or mn(acac)3 with nucleic bases and nucleosides (adenine, guanine, xanthine, adenosine and guanosine) have been synthesized in nonaqueous solution. polarographic and spectroscopic (ir and visible) methods have been used to establish the active site(s) on the imidazole and pyrimidine rings in the nucleic bases and nucleosides for the interaction with the mn(iii) com...

Journal: :IUPHAR/BPS guide to pharmacology CITE 2023

The mammalian genome encodes seven guanylyl cyclases, GC-A to GC-G, that are homodimeric transmembrane receptors activated by a diverse range of endogenous ligands. These enzymes convert guanosine-5'-triphosphate the intracellular second messenger cyclic guanosine-3',5'-monophosphate (cyclic GMP). GC-A, GC-B and GC-C expressed predominantly in cardiovascular system, skeletal system intestinal e...

Bahram Ghanbari Davar Mohammadi Boghai Massoud Hassanpoor

The complexes of Mn(OAc)3 and/or Mn(acac)3 with nucleic bases and nucleosides (adenine, guanine, xanthine, adenosine and guanosine) have been synthesized in nonaqueous solution. Polarographic and spectroscopic (IR and Visible) methods have been used to establish the active site(s) on the imidazole and pyrimidine rings in the nucleic bases and nucleosides for the intera...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2003
Katrin Karbstein Daniel Herschlag

The Tetrahymena ribozyme derived from the self-splicing group I intron binds a 5'-splice site analog (S) and guanosine (G), catalyzing their conversion to a 5'-exon analog (P) and GA. Herein, we show that binding of guanosine is exceptionally slow, limiting the reaction at near neutral pH. Our results implicate a conformational rearrangement on guanosine binding, likely because the binding site...

Journal: :FEBS Letters 1984

2003
ALVIN MARKOVITZ

Strain GS, a gram-negative motile bacterium isolated from soil, synthesizes two polysaccharides. The synthesis of a uranic acid-containing polysaccharide is derepressed by high concentrations of Na2SOd, while the synthesis of the polysaccharide containing equal quantities of n-rhamnose and n-talomethylose is repressed by NazS01 (1, 2). L-F’ucose and L-rhamnose are the methylpentoses commonly fo...

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