uracil


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uracil

 [u´rah-sil]

u·ra·cil (Ura, U),

(yūr'ă-sil),
Pyrimidine (base) present in ribonucleic acid.

uracil

/ura·cil/ (ūr´ah-sil) a pyrimidine base, in animal cells usually occurring condensed with ribose to form the ribonucleoside uridine; the corresponding deoxyribonucleoside is deoxyuridine. Symbol U.

uracil

(yo͝or′ə-sĭl)
n. Abbr. U
A pyrimidine base, C4H4N2O2, that is an essential constituent of RNA.

uracil

a pyrimidine base found in RNA. Pairs with adenine. See also thymine.

uracil

One of the 2 nitrogenous pyrimidine bases in RNA, which pairs with adenine and combines with ribose.

u·ra·cil

(U) (yūr'ă-sil)
A pyrimidine (base) present in ribonucleic acid.

uracil

One of the four bases that form the nucleotide code in RNA.
Uracilclick for a larger image
Fig. 310 Uracil . Molecular structure.

uracil

one of four types of nitrogenous bases found in RNA, having the single-ring structure of a class known as PYRIMIDINES. Formula: C4H4N2O2. See Fig. 310 . Uracil always forms complementary pairs with a base called adenine in DNA (during TRANSCRIPTION) or RNA (during TRANSLATION).

u·ra·cil

(yūr'ă-sil)
Pyrimidine (base) present in ribonucleic acid.

uracil

U; Ura; a pyrimidine base found in nucleic acids.
References in periodicals archive ?
Cytosine is converted to uracil, most probably at the nucleotide or nucleoside stage [15].
The presence of amide group in uracil was found by stretching vibration frequency near 1680-1630 cm-1.
The values Gb, Gx, Kb and Kx for uracil derivatives with CTAB and SDS are listed in Table- 1.
Uracil in DNA-general mutagen, but normal intermediate in acquired immunity.
7] mutagenized cells were spread onto 5-FOA plates containing uracil and uridine, and then were incubated at 30[degrees]C up to one week.
This model is consistent with coordination potential between hypoxanthine and uracil, however, several other structures are possible.
Investigations of glutathione S-transferase (6), hemoglobin (7), uracil N-glycosylase (8), chorismate metabolism enzymes (9), and hypothetical protein targets associated with a structural genomics program (10) are representative of these efforts.
cerevisiae INVSC1 (Invitrogen, Carlsbad, CA) and transformant were selected on solid media lacking uracil [SC-ura with 2% (w/v) glucose--Adams et al.
The pyrimidines uracil and orotic acid are formed directly from HCN, whereas uracil and cytosine are formed from cyano-acetylene [ILLUSTRATION FOR FIGURE 2 OMITTED](3).
He isolated two different purines, adenine and guanine, and three different pyrimidines, uracil, cytosine, and thymine.
There's also a difference in that, while the bases adenine, guanine, and cytosine are common to both RNA and DNA, the DNA base thymine is substituted by uracil in RNA.