It's easy to know what nucleotide to put in each position as you're going along and polymerizing a new molecule.
这使得复制过程中决定下一个核苷酸位点,应该用哪一个核苷酸更为容易
That's due to the asymmetry of the nucleotide, that there's a 5' and a 3' end and the way that they're linked together.
这是由于核苷酸的非对称性造成的,这里是5'端和3'端,这就是它们连接在一起的方式
The phosphate group of one nucleotide gets linked to the sugar group of another nucleotide and I'm going to show you that in a few minutes.
一个核苷酸上的磷酸基团,连接在另外一个核苷酸的糖基上,马上我会给你们演示
I would attach the phosphate that's connected to the 5' carbon of another nucleotide.
我会添加一个磷酸基团到,另外一个核苷酸的5'碳原子上
In nucleotide the phosphate is always attached to the 5' carbon.
在核苷酸内磷酸基总是连接到5'碳部位
The nucleotide has a directionality, there's an up and a down to it and it's going to turn out the chain that's formed by polymerizing these has a directionality as well and that's important in defining the structure.
核苷酸有方向性,有上端和下端,核苷酸长链,是由核苷酸沿一个特定方向聚合而成的,这在定义结构时很重要
The reason that 3' is important is that when you polymerize two nucleotides together and a third nucleotide, and a fourth nucleotide, when you polymerize nucleotides together they get polymerized, the phosphate of one gets linked to the 3' carbon of another.
'碳部位重要是因为,当你把两个核苷酸聚合在一起,然后再聚合第三个,第四个的时候,核苷酸在聚合时,磷酸基与另外一个戊糖的3'碳部位连接
If I wanted to link another nucleotide to this DNA chain what would I attach here on the bottom?
如果想把另一核苷酸连接到这条DNA链,我将会在DNA链末端添加什么
So the repeating unit in DNA is this structure here, a nucleotide, which has three different regions.
NA的重复单位就是,核苷酸,它有三个不同的区域
If I told you that 'draw me a nucleotide from RNA that has ', you could go back to this picture and you could draw the whole thing.
如果让你找RNA中碱基是A的核苷酸,你可以看着这个图,就能找出其全部结构
应用推荐