The phosphate is linked to this carbon on the pentose, and notice that there is a number on this carbon, it's called - it's the 5' carbon.

磷酸基连接在戊糖的一个碳原子上,注意在这个碳上有个数字,它叫做5'碳

耶鲁公开课 - 生物医学工程探索课程节选

This represents the upright struts on a ladder that I showed you before, it represents this backbone that's shown by - that's formed by polymerizing the pentose's together through phosphate's always going 5' to 3', 5' to 3'.

线条代表梯子,上下的支柱 之前给你们演示过,代表由多聚戊糖分子,通过磷酸基从5'端向3'端方向,连接起来的主链

耶鲁公开课 - 生物医学工程探索课程节选

If I drew this altogether and this is one particular nucleic acid, now shown in more detail, all of the carbons of the pentose are shown here, the phosphate is shown, and a base is shown.

如果我把这个放在一起,这个核酸分子,让你们看得到更多细节,戊糖的五个碳都在这儿,磷酸基在这儿,碱基在这儿

耶鲁公开课 - 生物医学工程探索课程节选

It's the phosphate and the pentose that make up the backbone - that make up the upright struts of the ladder and it's the bases that make up the connecting struts, so the bases are the colors.

磷酸基和戊糖,共同构成了主链,主链又构成了梯子上下的支柱,而碱基,则构成连接支柱的梯阶,碱基是用各种颜色表示的

耶鲁公开课 - 生物医学工程探索课程节选