uracil

Therefore, considerable efforts have been made to investigate thymine, uracil and their derivatives.

因此，人们在腺嘌呤和胸腺嘧啶以及它们的衍生物的性质方面做了很多的努力。

互联网摘选

When the posterior silk gland was cultured in vitro, the absorptive activity of 3H-thymidine, 3H-uracil and 3H-glycocoll was all affected by hormones in culture media.

离体后部丝腺对~3H-胸腺嘧啶核苷、~3H-尿嘧啶和~3H-甘氨酸的吸收活性均受培养液中激素的影响。

互联网摘选

Synthesis method of 6-methyl uracil was studied.

着重介绍了 6- 甲基脲嘧啶的合成方法.

互联网摘选

DPD is the first rate-limiting enzyme in the catabolism of uracil and thymine, and affects DNA synthesis by decreasing the level of uracil and thymine, the necessary material for DNA synthesis.

DPD是尿嘧啶和胸腺嘧啶分解过程中的第一限速酶，可降低用于DNA合成的尿嘧啶和胸腺嘧啶的水平而影响DNA的合成。

互联网摘选

Uracil -- a pyrimidine found in RNA that base-pares with adenine.

尿嘧啶 -- 核糖核酸中的一种嘧啶,与腺嘌呤形成碱基对.

互联网摘选

This paper reports the separation and determination of cytosine, thymine, uracil, 1-hydroxyethyl-5-fluoro uracil, 1-propionyloxy uracil and 5-fluoro uracil by capillary zone electrophoresis.

本文报道毛细管区带电泳分离和测定胞嘧啶、胸腺嘧啶、尿嘧啶、羟乙基氟尿嘧啶、尿嘧啶丙酸和5-氟尿嘧啶。

互联网摘选

In the third chapter, first-principles electronic structure calculations were performer to study the reaction mechanisms of ribosomal peptide bond formation catalyzed by 9-methyl Guanine or 1-methyl Uracil instead of Adenine.

第三章中我们运用量子化学从头算的方法研究，利用9-甲基鸟嘌呤和1-甲基尿嘧啶来分别替代鸟嘌呤核苷和尿嘧啶核苷进行分子突变后的反应机理的模型化学研究。

互联网摘选

Density functional theory study on tautomers of cytosine, uracil and thymine

嘧啶及其异构体的密度泛函理论研究

互联网摘选

Furthermore, compared with the tautomerizing processes of uracil, the probability of 5-FU to tautomerize to its enol form is much higher. Based on such facts, the reason why 5-FU is an effective anticancer medicament but with some of toxicity is explained to some extent.

通过与尿嘧啶质子转移过程相比较，发现在各种情况下5-氟尿嘧啶异构化为烯醇式的几率均比尿嘧啶的大，在一定程度上解释了为什么5-氟尿嘧啶具有优良抗癌作用的同时具有一定的毒副作用。

互联网摘选

Fcy:: Fur gene was fused by two genes, Fcy and Fur. Gene Fcy encodes yeast cytosine deaminase and gene Fur encodes uracil phosphoribosyltransferase.

Fcy：：Fur基因由Fcy和Fur两个基因融合而成，其中，Fcy编码酵母菌胞嘧啶脱氨酶，Fur编码尿嘧啶磷酸核糖转移酶。

互联网摘选

The most abundant bases are cytosine, thiamine , and uracil ( pyrimidines ) and adenine and guanine ( purines ) .

最丰富的碱基是胞嘧啶, 胸腺嘧啶, 尿 嘧 啶,腺嘌呤和鸟嘌 呤.

互联网摘选