DNA: Damage and Repair Mechanisms in Humans

DNA: Damage and Repair Mechanisms in Humans
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DNA:人类的损伤和修复机制

DOI:
10.19080/gjpps.2017.03.555613
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发表时间:
2017
影响因子:
4.7
通讯作者:
S. Ambekar
S. Ambekar
中科院分区:
医学2区
文献类型:
--
作者:
S. Ambekar

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DNA主要由戊糖、氮基和磷酸基三种成分组成。DNA决定着生物的生长、发育、功能和繁殖。主要是核酸和蛋白质,还有脂质和碳水化合物。这些大分子对生物是必不可少的。它有两股相互缠绕形成双螺旋结构。由于两条链是由称为核苷酸的单体单位形成的,因此它们被称为多核苷酸。核苷酸是嘌呤(A,G)和嘧啶(C,T,U)、脱氧核糖和磷酸基等氮碱基的集合[1-7]。
DNA contains mainly three components viz. Pentose Sugar, Nitrogen Base and Phosphate group. DNA determines the growth, development function and reproduction in living beings. It is mainly nucleic acid and proteins, lipids and carbohydrates too. These macromolecules are essential for living beings. It has two strands coiled around each other forming a doublehelix structure. Since, two strands are formed from monomer units called nucleotides, they are termed as polynucleotides. Nucleotide is aggregation of nitrogen bases such as Purines (A,G) and Pyrimidines (C,T,U), Deoxyribose sugar and Phosphate group [1-7].
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