DNA ligase An enzyme, used in DNA REPLICATION and the in vitro synthesis of DNA, that joins together segments of newly synthesized polynucleotide chains using energy from ATP. See replication.

• DNA连接酶：是一种在DNA复制或DNA晶体合成中起作用的酶，它能够将新合成的DNA片段连接在一起，反应中需要ATP提供能量。参见replication.