Chemically induced dimerization (CID) has proven to be a powerful tool for modulating protein interactions. However, the traditional dimerizer rapamycin has limitations in certain in vivo applications because of its slow reversibility and its affinity for endogenous proteins. Described herein is a bioorthogonal system for rapidly reversible CID. A novel dimerizer with synthetic ligand of FKBP′ (SLF′)
化学诱导的二聚化(CID)已被证明是调节蛋白质相互作用的有力工具。然而,传统的二聚体
雷帕霉素由于其缓慢的可逆性及其对内源蛋白质的亲和力而在某些体内应用中具有局限性。本文描述了用于快速可逆CID的
生物正交系统。一种具有与
甲氧苄啶(
TMP)连接的FKBP'(SLF')合成
配体的新型二聚体。SLF'部分与FK506结合蛋白(FKBP)的F36V突变体结合,而
TMP部分与大肠杆菌二氢叶酸还原酶(eDHFR)结合。SLF'-
TMP诱导的FKBP(F36V)和eDHFR的异为0.12μ的解离常数中号。单独添加
TMP足以迅速破坏这种异二聚作用。给出了两个例子,以证明该系统是宝贵的工具,可以广泛地用于体内快速可逆地控制蛋白质功能。