Results 251 to 260 of about 231,754 (311)

Ligand specificity and adaptability revealed by the first Guanine-II riboswitch tertiary structure. [PDF]

Nucleic Acids Res
Li H, Shen X, Xu X, Tai X, He M, Zhang J, Ren A.   +6 more
europepmc   +1 more source

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UV‐Light‐Induced Hydrogen Transfer in Guanosine–Guanosine Aggregates

Chemistry – A European Journal, 2013
AbstractAggregates of a lipophilic guanine (G) derivative have been studied in n‐hexane by femtosecond‐to‐microsecond UV‐visible broadband transient absorption, stationary infrared and UV‐visible spectroscopy and by quantum chemical calculations. We report the first time‐resolved spectroscopic detection of hydrogen transfer in GG aggregates, which ...
Hunger Katharina, Buschhaus Laura, Biemann Lars, Braun Michaela, Kovalenko Sergey, Improta Roberto, Kleinermanns Karl   +6 more
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Penicillin interaction with guanosine

Biochemical and Biophysical Research Communications, 1972
Abstract Because of the widespread use of penicillins as antibacterial agents, the question of how penicillin affects the function and structure of nucleic acids becomes of biological importance. This communication reports a nuclear magnetic resonance study which shows that penicillin-G interacts with guanosine in dimethyl sulfoxide and can break the
L S, Kan, F K, Schweighardt, S, Kao, N D, Li   +3 more
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Conformation of acetylaminofluorene and aminofluorene modified guanosine and guanosine derivatives

Biochemical and Biophysical Research Communications, 1980
Abstract Acetylaminofluorene and aminofluorene modified Guo, GMP, d(GpA) and d(ApG) have been studied by circular dichroism and 1H nuclear magnetic resonance. Aminofluorene modified Guo is preferentially in the anti conformation and acetylaminofluorene modified Guo in the syn conformation.
M, Leng, M, Ptak, P, Rio
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QUANTUM-CHEMICAL SIMULATION OF THE GUANOSINE - GUANOSINE INTERACTION IN HYDROGEL

SAKHAROV READINGS 2022: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY Part 1, 2022
Quantum-chemical simulation of interaction between guanosines molecules in water solution shows possibility of existing hydrogen bonds between NH2 and C=O groups of one molecule and atom O of 3'-ОН and atom H of 2'-ОН groups of other molecule, respectively. It was found that stability of hydrogel increased with the increasing of guanosine concentration
M. А. Khancheuski, R. V. Kazakov, S. N. Shahab, E. I. Kvasyuk   +3 more
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Neurotrophic Effects of Extracellular Guanosine

Nucleosides, Nucleotides and Nucleic Acids, 2008
Central nervous system (CNS) astrocytes release guanosine extracellularly, that exerts trophic effects. In CNS, extracellular guanosine (GUO) stimulates mitosis, synthesis of trophic factors, and cell differentiation, including neuritogenesis, is neuroprotective, and reduces apoptosis due to several stimuli.
Rathbone M, Pilutti L, CACIAGLI, Francesco, Jiang S.   +3 more
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Guanosine diphosphate d-glucose glucohydrolase

Archives of Biochemistry and Biophysics, 1966
Abstract A new enzyme has been found in yeast, which catalyzes the hydrolysis of guanosine diphosphate glucose to guanosine diphosphate and glucose. The enzyme was purified about 130-fold and its kinetic properties were studied. The enzymic activity seems to be strictly specific for guanosine diphosphate glucose, with a Km of 0.23 m m . The enzyme is
S, Sonnino, H, Carminatti, E, Cabib
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