GTP-State-Selective Cyclic Peptide Ligands of K-Ras(G12D) Block Its Interaction with Raf.
GTP-State-Selective Cyclic Peptide Ligands of K-Ras(G12D) Block Its Interaction with Raf.
复制标题
DOI:
10.1021/acscentsci.0c00514
复制
发表时间:
2020-10-28
影响因子:
18.2
通讯作者:
Suga H
中科院分区:
文献类型:
--
作者:
Zhang Z;Gao R;Hu Q;Peacock H;Peacock DM;Dai S;Shokat KM;Suga H
We report the identification of three cyclic peptide ligands of K-Ras(G12D) using an integrated in vitro translation–mRNA display selection platform. These cyclic peptides show preferential binding to the GTP-bound state of K-Ras(G12D) over the GDP-bound state and block Ras-Raf interaction. A co-crystal structure of peptide KD2 with K-Ras(G12D)·GppNHp reveals that this peptide binds in the Switch II groove region with concomitant opening of the Switch II loop and a 40° rotation of the α2 helix, and that a threonine residue (Thr10) on KD2 has direct access to the mutant aspartate (Asp12) on K-Ras. Replacing this threonine with non-natural amino acids afforded peptides with improved potency at inhibiting the interaction between Raf1-RBD and K-Ras(G12D) but not wildtype K-Ras. The union of G12D over wildtype selectivity and GTP state/GDP state selectivity is particularly desirable, considering that oncogenic K-Ras(G12D) exists predominantly in the GTP state in cancer cells, and wildtype K-Ras signaling is important for the maintenance of healthy cells. We report the discovery of GTP-state-selective cyclic peptide ligands of K-Ras(G12D), a prevalent oncogenic driver, using an integrated in vitro translation−mRNA display selection platform.
登录
查看更多内容
影响因子:
50.3
作者:
McCormick F
通讯作者:
McCormick F
DOI:
10.1073/pnas.1404639111
发表时间:
2014-06-17
影响因子:
11.1
作者:
Hunter, John C.;Gurbani, Deepak;Westover, Kenneth D.
通讯作者:
Westover, Kenneth D.
影响因子:
2.9
作者:
Feng H;Zhang Y;Bos PH;Chambers JM;Dupont MM;Stockwell BR
通讯作者:
Stockwell BR
影响因子:
2.9
作者:
Geyer, M;Schweins, T;Kalbitzer, HR
通讯作者:
Kalbitzer, HR
影响因子:
14.8
作者:
Patgiri, Anupam;Yadav, Kamlesh K.;Arora, Paramjit S.;Bar-Sagi, Dafna
通讯作者:
Bar-Sagi, Dafna