Engineering subtilisin proteases that specifically degrade active RAS.
Engineering subtilisin proteases that specifically degrade active RAS.
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DOI:
10.1038/s42003-021-01818-7
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发表时间:
2021-03-05
影响因子:
5.9
通讯作者:
Bryan PN
中科院分区:
文献类型:
--
作者:
Chen Y;Toth EA;Ruan B;Choi EJ;Simmerman R;Chen Y;He Y;Wang R;Godoy-Ruiz R;King H;Custer G;Travis Gallagher D;Rozak DA;Solomon M;Muro S;Weber DJ;Orban J;Fuerst TR;Bryan PN
We describe the design, kinetic properties, and structures of engineered subtilisin proteases that degrade the active form of RAS by cleaving a conserved sequence in switch 2. RAS is a signaling protein that, when mutated, drives a third of human cancers. To generate high specificity for the RAS target sequence, the active site was modified to be dependent on a cofactor (imidazole or nitrite) and protease sub-sites were engineered to create a linkage between substrate and cofactor binding. Selective proteolysis of active RAS arises from a 2-step process wherein sub-site interactions promote productive binding of the cofactor, enabling cleavage. Proteases engineered in this way specifically cleave active RAS in vitro, deplete the level of RAS in a bacterial reporter system, and also degrade RAS in human cell culture. Although these proteases target active RAS, the underlying design principles are fundamental and will be adaptable to many target proteins. Chen et al. describe a rational design of subtilisin mutants that degrade active RAS by cleaving a conserved sequence in switch 2. They further modified the active site to be dependent on a cofactor to generate high target specificity. Proteases engineered to cleave this region degraded RAS in vitro and in cells with a promise of adaptability for other target proteins too.
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DOI:
10.1107/s090744491003982x
发表时间:
2011-04
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Evans PR
通讯作者:
Evans PR
影响因子:
2.9
作者:
Fisher, Kathryn E.;Ruan, Biao;Bryan, Philip N.
通讯作者:
Bryan, Philip N.
影响因子:
2.9
作者:
BRYAN, P;ALEXANDER, P;GALLAGHER, DT
通讯作者:
GALLAGHER, DT
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
DOI:
10.1073/pnas.87.12.4849
发表时间:
1990-06-01
影响因子:
11.1
作者:
BRUNGER, AT;MILBURN, MV;KIM, SH
通讯作者:
KIM, SH