Later that L19RNA under certain conditions, can catalyze specific oligonucleotide at the end of the cutting and connecting with and RNA polymerase activity.

• 后来发现四膜虫L19RNA在一定条件下能专一地催化寡聚核苷酸底物的切割与连接，具有核糖核酸酶和RNA聚合酶的活性。