Leaded lights: T30695 DNA can catalyze Pb²⁺ insertion into protoporphyrin IX with another Pb²⁺ ion as a cofactor. This inserted Pb²⁺ causes blue‐shifted emission from 635 to 590 nm, allowing simple ratiometric fluorescent sensing of Pb²⁺ with excellent sensitivity and selectivity.

中文翻译：

---

Pb2 +作为卟啉金属化DNA酶的底物和辅因子。

铅灯：T30695 DNA可以催化Pb ²⁺插入原卟啉IX中，另一Pb ²⁺离子作为辅助因子。插入的Pb ²⁺引起从635 nm到590 nm的蓝移发射，从而允许对Pb ²⁺进行简单的比例荧光检测，并具有出色的灵敏度和选择性。