The NEDD8-activating enzyme (NAE) initiates a protein homeostatic pathway essential for cancer cell growth and survival. MLN4924 is a selective inhibitor of NAE currently in clinical trials for the treatment of cancer. Here, we show that MLN4924 is a mechanism-based inhibitor of NAE and creates a covalent NEDD8-MLN4924 adduct catalyzed by the enzyme. The NEDD8-MLN4924 adduct resembles NEDD8 adenylate, the first intermediate in the NAE reaction cycle, but cannot be further utilized in subsequent intraenzyme reactions. The stability of the NEDD8-MLN4924 adduct within the NAE active site blocks enzyme activity, thereby accounting for the potent inhibition of the NEDD8 pathway by IVILN4924. Importantly, we have determined that compounds resembling MLN4924 demonstrate the ability to form analogous adducts with other ubiquitin-like proteins (UBLs) catalyzed by their cognate-activating enzymes. These findings reveal insights into the mechanism of E1s and suggest a general strategy for selective inhibition of UBL conjugation pathways.
机构:
Scripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA
Scripps Res Inst, Inst Childhood & Neglected Dis, La Jolla, CA 92037 USAScripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA
Balch, William E.
;
Morimoto, Richard I.
论文数: 0引用数: 0
h-index: 0
机构:
Northwestern Univ, Dept Biochem Mol Biol & Cell Biol, Rice Inst Biomed Res, Evanston, IL 60208 USAScripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA
Morimoto, Richard I.
;
Dillin, Andrew
论文数: 0引用数: 0
h-index: 0
机构:
Salk Inst Biol Studies, La Jolla, CA 92037 USAScripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA
Dillin, Andrew
;
Kelly, Jeffery W.
论文数: 0引用数: 0
h-index: 0
机构:
Scripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA
Scripps Res Inst, Dept Chem, La Jolla, CA 92037 USAScripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA
机构:
Scripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA
Scripps Res Inst, Inst Childhood & Neglected Dis, La Jolla, CA 92037 USAScripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA
Balch, William E.
;
Morimoto, Richard I.
论文数: 0引用数: 0
h-index: 0
机构:
Northwestern Univ, Dept Biochem Mol Biol & Cell Biol, Rice Inst Biomed Res, Evanston, IL 60208 USAScripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA
Morimoto, Richard I.
;
Dillin, Andrew
论文数: 0引用数: 0
h-index: 0
机构:
Salk Inst Biol Studies, La Jolla, CA 92037 USAScripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA
Dillin, Andrew
;
Kelly, Jeffery W.
论文数: 0引用数: 0
h-index: 0
机构:
Scripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA
Scripps Res Inst, Dept Chem, La Jolla, CA 92037 USAScripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA