| 单词 | nucleotide |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔GTP〕A nucleotide composed of guanine, ribose, and three phosphate groups and necessary for the synthesis of RNA.三磷酸鸟苷：由鸟嘌呤、核酸和三组磷酸盐组成的核苷核酸，为合成核糖核酸的必备成分美国传统〔cyclic AMP〕A cyclic nucleotide of adenosine that acts at the cellular level as a regulator of various metabolic processes.环腺苷酸：一种环状的腺苷单核苷酸，对细胞内多种新陈代谢过程进行调节美国传统〔cyclic GMP〕A cyclic nucleotide of guanosine thought to act at the cellular level as a regulator of various metabolic processes, possibly as an antagonist to cyclic AMP.环磷鸟苷：鸟苷的循环核苷酸，认为在细胞膜上作为各种新陈代谢过程的调节剂，也可作为环腺苷酸的一种抵抗物美国传统〔dATP〕One of the two purine nucleotides that are used to synthesize DNA.脱氧腺苷三磷酸：用来合成脱氧核糖核酸的两个嘌呤核苷酸之一美国传统〔dCTP〕One of the two pyrimidine nucleotides that are used to synthesize DNA.脱氧胞苷三磷酸：用来合成脱氧核糖核酸的两个嘧啶核酸之一美国传统〔dGTP〕One of the two purine nucleotides that are used to synthesize DNA.脱氧胞苷三磷酸：用来合成脱氧核糖核酸的两个嘌呤核苷酸之一美国传统〔dTTP〕One of the two pyrimidine nucleotides that are used to synthesize DNA.脱氧胸腺嘧啶三磷酸：用来合成脱氧核糖核酸的两个嘧啶核苷酸之一美国传统〔deletion〕Genetics The loss, as through mutation, of one or more nucleotides from a chromosome.【遗传学】 缺失，中间缺失：由于变异等原因导致染色体中一个或多个核苷酸的缺失美国传统〔deoxyribonucleotide〕A nucleotide containing deoxyribose that is a constituent of DNA.脱氧核苷酸：一种核苷酸，含有构成DNA的成分——脱氧核糖美国传统〔dinucleotide〕A nucleotide molecule that consists of a combination of two nucleotide units.二核苷酸：两个单核苷酸结合而成的核苷酸分子美国传统〔exonuclease〕Any of a group of enzymes that catalyze the hydrolysis of single nucleotides from the end of a DNA or RNA chain.核酸外切酶：从脱氧核糖核酸链或核糖核酸链的末端催化单核苷酸水解的一种酶美国传统〔exon〕A nucleotide sequence in DNA that carries the code for the final messenger RNA molecule and thus defines the amino acid sequence during protein synthesis.编码顺序：DNA中的核苷酸序列，为最终的信息传递者RNA分子携带编码并在蛋白质合成中确定氨基酸范围美国传统〔genomics〕The study of all of the nucleotide sequences, including structural genes, regulatory sequences, and noncoding DNA segments, in the chromosomes of an organism.基因组：对所有核苷酸序列的研究，包括生物染色体中的结构基因、调节序列和未编码的脱氧核糖核酸节段美国传统〔homeobox gene〕One of a group of genes with a shared nucleotide segment that are involved in the formation of bodily segmentation during embryologic development.同源框基因，同源分子基因：胚胎学发展过程中身体复杂的细胞分裂，参与体节形成的共有核苷酸节段的基因组之一美国传统〔inosinic acid〕A nucleotide found in muscle and other tissues that is formed by the deamination of AMP and on hydrolysis yields inosine.纤维糖酸，次黄苷酸，肌苷酸：存在于肌肉和其它组织中的核苷，由一磷酸腺苷脱氨基和水解肌核苷形成美国传统〔insertion〕Genetics The addition, as by mutation, of one or more nucleotides to a chromosome.【遗传学】 染色体突增：由于突变而使染色体增加一个或多个核苷酸美国传统〔mononucleotide〕A nucleotide consisting of one molecule each of a phosphoric acid, a sugar, and either a purine or a pyrimidine base.单核苷酸：磷酸、糖、嘌呤或嘧啶碱基中的一种，它组成的一个分子的苷酸美国传统〔muton〕The smallest unit of DNA at which a mutation can occur; a nucleotide.突变子：能够产生巨变的脱氧核糖核酸的最小单位；一个核苷酸美国传统〔nucleotidase〕An enzyme that catalyzes the hydrolysis of a nucleotide to a nucleoside and phosphoric acid.核苷酸酶：催化核苷酸转化成核苷和磷酸的酶美国传统〔oligonucleotide〕A short polymeric chain of two to ten nucleotides.低（聚）核苷酸：由两个到十个核苷酸构成的一条短聚体链美国传统〔palindrome〕A segment of double-stranded DNA in which the nucleotide sequence of one strand reads in reverse order to that of the complementary strand.回文结构：含有双股脱氧核糖核酸的一部分，其中的核苷酸系列的一股颠倒顺序来读取即为互补的一股美国传统〔point mutation〕A mutation that affects only one or a few nucleotides in a gene.基因点突变：在一个基因中，只影响一个或几个核苷酸的突变美国传统〔polynucleotide〕A polymeric compound consisting of a number of nucleotides.多（聚）核苷核：由许多核苷酸构成的一种聚合化合物美国传统〔reading frame〕One of the three possible ways in which an mRNA sequence of nucleotides can be read as a series of base triplets to specify the amino acids in a protein chain.阅读码框，读框：核苷酸的信使核糖核酸序列能被读作指定蛋白质链中胺基酸的一串碱基三联体的三种可能方式之一美国传统〔ribonucleotide〕A nucleotide that contains ribose as its sugar and is an immediate component of RNA.核糖核酸：一种包含核糖作为其糖分的核苷酸，且是RNA的一种直接成分美国传统〔sequence〕Biochemistry The order of constituents in a polymer, especially the order of nucleotides in a nucleic acid or of the animal acids in a protein.【生物化学】 顺序：聚合物中成分的顺序，尤指核酸中核苷酸的顺序或蛋白质中动物酸的顺序美国传统〔terminator〕A sequence of nucleotides that signals the end of transcription and the completion of the synthesis of a nucleic acid molecule from a template.终止者：标志着转录终止或从核酸模板到综合分子核酸的完成的一个核苷酸序列美国传统〔triplet〕Genetics A unit of three successive nucleotides in a molecule of DNA or RNA that codes for a specific amino acid; a codon or anticodon.【遗传学】 密码子，三联密码：一个把一种专门的氨基酸，密码子或反密码子译成密码的DNA或RNA的分子中三个相接连的核苷酸的一个联合体美国传统 |
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