Results 251 to 260 of about 86,414 (313)

THE METABOLISM OF URACIL

open access: yesCanadian Journal of Biochemistry and Physiology, 1957
Oxygen uptake could not be demonstrated when uracil, uridine, or uridylic acid and various supplements were incubated with rat liver preparations. Attention was directed towards the likelihood that the initial step of uracil catabolism in mammals is a reduction such as occurs in yeasts. Various techniques were employed to measure the possible reduction
J G, GOLDMAN, B, MCKAY, A H, SCHEIN
openaire   +3 more sources

Photodissociation of uracil

Physical Chemistry Chemical Physics, 2007
We investigate the photochemistry and photodissociation dynamics of uracil by two-colour photofragment Doppler spectroscopy and by two-colour slice imaging at excitation wavelengths between 268 and 235 nm. We observe the loss of a hydrogen atom upon excitation into the pipi* state.
Michael, Schneider   +4 more
openaire   +2 more sources

Uracil Photoproducts from Uracil Irradiated in Ice

Science, 1969
Two new products were isolated from uracil irradiated with ultraviolet light in frozen aqueous solution. As judged by mass, nuclear magnetic resonance, and ultraviolet and infrared spectra, one is a photopolymer, U 3 , and the structure of the other is probably 6-4′-[pyrimidin-2′-one]-uracil.
M N, Khattak, S Y, Wang
openaire   +2 more sources

Uracil-DNA Glycosylases and DNA Uracil Repair

1989
Publisher Summary This chapter reviews the DNA uracil repair and uracil–DNA glycosylases (UDG). The major source of DNA uracil in prokaryotic and eukaryotic cells is transient incorporation of dUMP during replication. This replicative uracil is quickly repaired by UDG, apyramidinic/apurinic (AP) endonucleases, and other enzymes of excision repair ...
N V, Tomilin, O N, Aprelikova
openaire   +2 more sources

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